WO2012146255A1 - Active damping system for a spray boom - Google Patents

Active damping system for a spray boom Download PDF

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Publication number
WO2012146255A1
WO2012146255A1 PCT/DK2012/050140 DK2012050140W WO2012146255A1 WO 2012146255 A1 WO2012146255 A1 WO 2012146255A1 DK 2012050140 W DK2012050140 W DK 2012050140W WO 2012146255 A1 WO2012146255 A1 WO 2012146255A1
Authority
WO
WIPO (PCT)
Prior art keywords
boom
spray
vertical movement
assemblies
block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DK2012/050140
Other languages
French (fr)
Inventor
Joergen Maagaard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Syddansk Universitet
Original Assignee
Syddansk Universitet
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Syddansk Universitet filed Critical Syddansk Universitet
Priority to CA2832993A priority Critical patent/CA2832993A1/en
Priority to AU2012247864A priority patent/AU2012247864A1/en
Priority to EP12776752.3A priority patent/EP2701500A4/en
Priority to US14/113,854 priority patent/US20140048368A1/en
Publication of WO2012146255A1 publication Critical patent/WO2012146255A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • A01M7/005—Special arrangements or adaptations of the spraying or distributing parts, e.g. adaptations or mounting of the spray booms, mounting of the nozzles, protection shields
    • A01M7/0053—Mounting of the spraybooms
    • A01M7/0057—Mounting of the spraybooms with active regulation of the boom position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/30—Spraying vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry

Definitions

  • the present invention relates to a system for stabilising and damping vertical movement of a spray boom connected, preferably pivotably, to a tractor or another vehicle, as used for sprayers in agricultural applications.
  • Agricultural fields are often sprayed with various chemical solutions, including fertilizers, herbicides, insecticides, etc.
  • various types of equipment are available for applying such chemical solutions.
  • Sprayers used in farming for spraying crops have wide spray booms, in operating position, which extended outwardly transverse to the direction of travel of a vehicle adapted for moving the spray boom.
  • the width of the sprayer typically ranges from24 metres to 52 metres.
  • a problem with boom spraying equipment relates to difficulties in conforming the spray booms in their field positions to the terrain. These problems are exacerbated by sloping and uneven field conditions, and are further exacerbated by relatively wide-span spray booms which can create relatively large moment arms at the vehicles.
  • the spray nozzles mounted on the booms should preferably be positioned at uniform heights above the field or crop surface.
  • the boom on one side of the vehicle may need to be raised while the other boom may need to be lowered to maintain a relatively uniform spraying height for effective coverage.
  • This problem has been addressed by providing boom elevation controls, which can be operated for each boom independently from the vehicle cab.
  • manually controlled boom elevation systems are susceptible to human error factors in operation. For example, operators may have difficulty adjusting the elevations of a pair of spray booms in response to changing field contours while keeping the vehicle on a straight course.
  • EP0157592 describes a boom suspension including a passive and an active suspension arrangement.
  • the passive suspension arrangement maintains the boom in a set relation to the vehicle and stabilises the boom against displacement from a desired position when the vehicle moves over uneven ground.
  • the active suspension arrangement comprises means to force an alteration of a dimension of the passive suspension and in that way corrects by displacement of the whole boom and suspension. This is necessary when the boom is in the wrong attitude with respect to the ground surface when, for example, the boom tilts on its own suspension or the ground is sloping.
  • the means to force the alteration produce a final boom position which is altered from the stabilised suspended position.
  • Control means to control the means to force the alteration in the said dimension provide a continuous correction of the displacement more slowly than the stabilisation action of the passive suspension of the whole boom and suspension.
  • This control means include a distance sensor to measure the distance of the boom from the ground, means responsive to this measurement to determine the alteration in the dimension to correct the distance of the boom from the ground, and means responsive to this determination to alter the dimension to continuously correct the distance of the boom from the ground.
  • US3731879A describes a system for a pivoted spray boom including a pair of boom assemblies.
  • the invention disclosed in US3731879A aims to have the boom parallel to the ground if the tractor is driving on a sloped surface.
  • the driver In US3731879A the driver must adjusts the position of the weights on the boom from inside the tractor, which confirms that US3731879A does not deal with automatic damping of unwanted vibrations.
  • US4522841 A is concerned with the stabilization of vertical movement of a spray boom and not the damping of vibrations in the spray boom.
  • the boom In US4522841A the boom is mounted with complete freedom of movement along its center of gravity, whereby an actuator connected to the boom maintains a spray manifold parallel to the ground.
  • the system disclosed in US4522841A would not allow dampening of boom vibrations due to e.g. an uneven ground surface.
  • a system for actively damping vertical movement of a spray boom comprising:
  • one or more means for measuring the position of the boom assemblies relative to the ground such as one or more accelerometers, gyros and/or distance measuring appartus;
  • the stabilising device is configured as a block movable on a track along the length of the boom assembly and due to the mass of the block it compensates for any undesired vertical movement, said activating means capable of moving the device along the boom assembly, said computer controlling means receiving information from the one or more means for measuring the position of the boom assemblies on the vertical movement of the pair of boom assemblies, whereby the computer controlling means controls the vertical position of the stabilising device through the activating means in response to the received information (i.e. true feed-back control).
  • the block has a mass of at least 15 kg, but 12 kg may also be sufficient.
  • the block is moved along the length of the boom (preferably on a rail) by wires or belts. It is also preferred that the means for measuring the position of the boom assemblies is a accelerometer.
  • Figure 1 shows a 30 meter Spraying boom partly unfolded.
  • Figure 2 shows an accelerometer sensor box placed on second outer boom section
  • Figure 4 shows a function diagram of a hydraulic motor and p-valve useful in the present invention.
  • FIG. 1 there is shown a spray boom including a pair of boom assemblies.
  • an accelerometer mounted on the boom .
  • the accelerometer measures the position of the boom assembly relative to the ground, and in response thereto the stabilising device is moved along the boom assembly to compensate for any undesired vertical movement of the spray boom; this is all regulated through the computer controlling means, which receives information on the vertical movement from the accelerometer and activates activating means (e.g. by simple feed-back regulation) to ensure that the stabilising device (e.g. a block movable on a track along the length of the boom assembly) due to its mass compensates for any undesired vertical movement.
  • the stabilising device e.g. a block movable on a track along the length of the boom assembly
  • the vertical vibration of the boom is measured by the accelerometer.
  • the stabilising device is mounted just before the outer boom section on left and right side on the top frame of the boom.
  • the length of the rail (a squared profile) should have nearly the same width as the boom section (see Figure 3).
  • the stabilising device in the embodiment shown in Figure 3 is a block moved along the squared profile by use of hydraulic motor and a timing belt; a functional diagram of this set-up is shown in Figure 4.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Pest Control & Pesticides (AREA)
  • Insects & Arthropods (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Public Health (AREA)
  • Transportation (AREA)
  • Catching Or Destruction (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Abstract

A system comprising a spray boom including a pair of boom assemblies, means for measuring the position of the boom assemblies relative to the ground, a stabilising device mounted on each boom assembly for stabilising and damping vertical movement of the spray boom, activating means connected to the stabilising device, and computer controlling means, wherein the stabilising device is configured as a block movable on a track along the length of the boom assembly thereby displacing the centre of gravity of the spray boom, the activating means capable of moving the block along the boom assembly, the computer controlling means receiving information from the means for measuring the position of the boom assemblies relative to the ground on the vertical movement of the pair of boom assemblies, whereby the computer controlling means controls the vertical position of the stabilising device through the activating means in response to received information.

Description

ACTIVE DAMPING SYSTEM FOR A SPRAY BOOM
FIELD OF THE INVENTION
The present invention relates to a system for stabilising and damping vertical movement of a spray boom connected, preferably pivotably, to a tractor or another vehicle, as used for sprayers in agricultural applications.
BACKGROUND OF THE INVENTION
Agricultural fields are often sprayed with various chemical solutions, including fertilizers, herbicides, insecticides, etc. Various types of equipment are available for applying such chemical solutions.
Sprayers used in farming for spraying crops, have wide spray booms, in operating position, which extended outwardly transverse to the direction of travel of a vehicle adapted for moving the spray boom. The width of the sprayer typically ranges from24 metres to 52 metres.
The tendency towards the use of low volume spraying techniques, leading to a necessary reduction in spray droplet size, the cost of chemicals and increasing concern with environmental pollution demand more sophisticated spraying-machines which are able to spray the liquid as uniformly as possible.
A problem with boom spraying equipment relates to difficulties in conforming the spray booms in their field positions to the terrain. These problems are exacerbated by sloping and uneven field conditions, and are further exacerbated by relatively wide-span spray booms which can create relatively large moment arms at the vehicles. For spray chemical coverage, the spray nozzles mounted on the booms should preferably be positioned at uniform heights above the field or crop surface. However, when traversing a sloping field, the boom on one side of the vehicle may need to be raised while the other boom may need to be lowered to maintain a relatively uniform spraying height for effective coverage. This problem has been addressed by providing boom elevation controls, which can be operated for each boom independently from the vehicle cab. However, manually controlled boom elevation systems are susceptible to human error factors in operation. For example, operators may have difficulty adjusting the elevations of a pair of spray booms in response to changing field contours while keeping the vehicle on a straight course.
EP0157592 describes a boom suspension including a passive and an active suspension arrangement. The passive suspension arrangement maintains the boom in a set relation to the vehicle and stabilises the boom against displacement from a desired position when the vehicle moves over uneven ground. The active suspension arrangement comprises means to force an alteration of a dimension of the passive suspension and in that way corrects by displacement of the whole boom and suspension. This is necessary when the boom is in the wrong attitude with respect to the ground surface when, for example, the boom tilts on its own suspension or the ground is sloping. The means to force the alteration produce a final boom position which is altered from the stabilised suspended position. Control means to control the means to force the alteration in the said dimension provide a continuous correction of the displacement more slowly than the stabilisation action of the passive suspension of the whole boom and suspension. This control means include a distance sensor to measure the distance of the boom from the ground, means responsive to this measurement to determine the alteration in the dimension to correct the distance of the boom from the ground, and means responsive to this determination to alter the dimension to continuously correct the distance of the boom from the ground. One problem with this known device is that the fundamental frequency of the boom is low. This means that it reacts very slowly to any attempt to change its inclination to the ground. This slow reaction makes it difficult for the driver of the tractor to estimate exactly how far the boom must be moved - for example changing direction when traversing a sloping field requires that the slope of the boom must be changed as the tractor turns the corner to traverse the slope in the reverse direction. To avoid over-or undershoot, the driver must wait for stabilisation after each adjustment of the boom.
In all known attempts for the problem mentioned above, it is difficult to keep the spray boom parallel to the ground (and thus to the crops to be sprayed) at all times. The boom can oscillate, under the influence of variations in the transverse slope and external forces such as, for example, the wind. This tends to cause its ends to strike the ground and, in any case, disrupts the regularity of spraying. Spray booms do also oscillate vertically even when the ground is even. Such movement is highly undesired.
US3731879A describes a system for a pivoted spray boom including a pair of boom assemblies. The invention disclosed in US3731879A aims to have the boom parallel to the ground if the tractor is driving on a sloped surface. In US3731879A the driver must adjusts the position of the weights on the boom from inside the tractor, which confirms that US3731879A does not deal with automatic damping of unwanted vibrations.
US4522841 A is concerned with the stabilization of vertical movement of a spray boom and not the damping of vibrations in the spray boom. In US4522841A the boom is mounted with complete freedom of movement along its center of gravity, whereby an actuator connected to the boom maintains a spray manifold parallel to the ground. The system disclosed in US4522841A would not allow dampening of boom vibrations due to e.g. an uneven ground surface.
None of these prior art documents discloses a feedback system (with control loop) that would allow sufficiently rapid balancing of rapid vibrations.
Hence, it is still a challenge to dampen undesired vertical vibrations of the boom. There has been a long-felt need for actively damping vertical vibrations of spray booms. Many have attempted to solve that problem with systems similar to those of US4522841A , but without success.
It is an object of the present invention to provide a system that actively damps any undesired vertical movement of a spray boom. In this respect it is also an object to provide an automatic height control system, which can automatically and independently control and adjust the working heights of a pair of boom assemblies, especially relatively wide-span boom assemblies, pivotably attached to a tractor or another vehicle.
SUMMARY OF THE INVENTION
The above mentioned objects have been solved by the present invention. In one aspect of the present invention there is provided a system for actively damping vertical movement of a spray boom, said system comprising:
• a spray boom including a pair of boom assemblies;
• one or more means for measuring the position of the boom assemblies relative to the ground, such as one or more accelerometers, gyros and/or distance measuring appartus;
• a stabilising device mounted on each boom assembly for actively stabilising and damping vertical movement of the spray boom;
• activating means connected to the stabilising device;
• computer controlling means;
wherein the stabilising device is configured as a block movable on a track along the length of the boom assembly and due to the mass of the block it compensates for any undesired vertical movement, said activating means capable of moving the device along the boom assembly, said computer controlling means receiving information from the one or more means for measuring the position of the boom assemblies on the vertical movement of the pair of boom assemblies, whereby the computer controlling means controls the vertical position of the stabilising device through the activating means in response to the received information (i.e. true feed-back control).
Preferably the block has a mass of at least 15 kg, but 12 kg may also be sufficient. I n a particularly preferred embodiment of the present invention the block is moved along the length of the boom (preferably on a rail) by wires or belts. It is also preferred that the means for measuring the position of the boom assemblies is a accelerometer.
In another aspect of the present invention there is provided a method for actively damping vertical movement of a spray boom, said method comprising the steps:
• providing a spray boom including a pair of boom assemblies;
• providing one or more one or more means for measuring the position of the boom assemblies relative to the ground, such as one or more accelerometers, gyros and/or distance measuring appartus;;
• providing a stabilising device mounted on each boom assembly for actively stabilising and damping vertical movement of the spray boom; • moving the stabilising device, which is configured as a block with a mass of at least 12 kg, on a track along the length of the boom assembly in response to undesired vertical movement of the spray boom.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows a 30 meter Spraying boom partly unfolded.
Figure 2 shows an accelerometer sensor box placed on second outer boom section
Figur 3 shows a diagrammatic illustration of the stabilising device of the present invention.
Figure 4 shows a function diagram of a hydraulic motor and p-valve useful in the present invention.
DETAILED DESCRIPTION OF THE INVENTION
The invention will be explained hereinafter with respect to certain embodiments and drawings. The present invention will mainly be described with reference to agricultural spray booms, but the present invention may be applied to any suspended boom system, e.g. spraying of paints or other liquids.
Referring to Figure 1 there is shown a spray boom including a pair of boom assemblies. In Figure 2 there is shown an accelerometer mounted on the boom . The accelerometer measures the position of the boom assembly relative to the ground, and in response thereto the stabilising device is moved along the boom assembly to compensate for any undesired vertical movement of the spray boom; this is all regulated through the computer controlling means, which receives information on the vertical movement from the accelerometer and activates activating means (e.g. by simple feed-back regulation) to ensure that the stabilising device (e.g. a block movable on a track along the length of the boom assembly) due to its mass compensates for any undesired vertical movement. When working in the field , the vertical vibration of the boom is measured by the accelerometer. The stabilising device is mounted just before the outer boom section on left and right side on the top frame of the boom. The length of the rail (a squared profile) should have nearly the same width as the boom section (see Figure 3). The stabilising device in the embodiment shown in Figure 3 is a block moved along the squared profile by use of hydraulic motor and a timing belt; a functional diagram of this set-up is shown in Figure 4.

Claims

1 . A system for actively damping vertical movement of a spray boom, said system comprising:
• a spray boom including a pair of boom assemblies;
• one or more means for measuring the position of the boom assemblies relative to the ground, such as one or more accelerometers, gyros and/or distance measuring appartus;
• a stabilising device mounted on each boom assembly for actively stabilising and damping vertical movement of the spray boom;
• activating means connected to the stabilising device;
• computer controlling means;
wherein the stabilising device is configured as a block movable on a track along the length of the boom assembly and due to the mass of the block it compensates for any undesired vertical movement, said activating means capable of moving the device along the boom assembly, said computer controlling means receiving information from the one or more means for measuring the position of the boom assemblies relative to the ground on the vertical movement of the pair of boom assemblies, whereby the computer controlling means controls the vertical position of the stabilising device through the activating means in response to the received information.
2. System according to claim 1 , wherein the block has a mass of at least 12 kg, such as at least 1 5 kg, and wherein the movement of the block on each boom assembly is synch roneous.
3. System according to claim 1 or 2, wherein the block is moved along the length of the boom by wires or hydraulic drives.
4. System according to any one of the claims 1-3, wherein the accelerometers are placed on the next outer sections of the boom assemblies.
5. System according to any one of the preceding claims, wherein the spray boom is suspended from a frame on or connected to a tractor or another vehicle, as used for sprayers in agricultural applications.
6. A method for actively damping vertical movement of a spray boom, said method comprising the steps:
• providing a spray boom including a pair of boom assemblies;
• providing one or more accelerometers;
• providing a stabilising device mounted on each boom assembly for actively stabilising and damping vertical movement of the spray boom;
• moving the stabilising device, which is configured as a block with a mass of at least 12 kg, such as at least 30 kg, on a track along the length of the boom assembly in response to undesired vertical movement of the spray boom.
7. Method according to claim 6, wherein the block is moved along the length of the boom by wires or hydraulic drives.
8. Method according to claims 6 or 7, wherein the accelerometers are placed on the outer sections of the boom assemblies.
PCT/DK2012/050140 2011-04-29 2012-04-27 Active damping system for a spray boom Ceased WO2012146255A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2832993A CA2832993A1 (en) 2011-04-29 2012-04-27 Active damping system for a spray boom
AU2012247864A AU2012247864A1 (en) 2011-04-29 2012-04-27 Active damping system for a spray boom
EP12776752.3A EP2701500A4 (en) 2011-04-29 2012-04-27 ACTIVE DAMPING SYSTEM FOR SPRAY RAMP
US14/113,854 US20140048368A1 (en) 2011-04-29 2012-04-27 Active damping system for a spray boom

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201100331 2011-04-29
DKPA201100331A DK201100331A (en) 2011-04-29 2011-04-29 Active damping system for a spray boom

Publications (1)

Publication Number Publication Date
WO2012146255A1 true WO2012146255A1 (en) 2012-11-01

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PCT/DK2012/050140 Ceased WO2012146255A1 (en) 2011-04-29 2012-04-27 Active damping system for a spray boom

Country Status (6)

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US (1) US20140048368A1 (en)
EP (1) EP2701500A4 (en)
AU (1) AU2012247864A1 (en)
CA (1) CA2832993A1 (en)
DK (1) DK201100331A (en)
WO (1) WO2012146255A1 (en)

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CN103557863A (en) * 2013-10-15 2014-02-05 哈尔滨工程大学 Damping method of underwater vehicle
WO2015040133A1 (en) * 2013-09-18 2015-03-26 Horsch Leeb Application Systems Gmbh Device for discharging fluid and/or solid active materials and method for controlling such a device
WO2015139050A1 (en) * 2013-03-14 2015-09-17 Agjunction Llc Implement and boom height control
EP2936980A1 (en) * 2014-04-23 2015-10-28 Robert Bosch Gmbh Agricultural sprayer
EP3069608A1 (en) * 2015-03-19 2016-09-21 Hochschule Für Technik Und Wirtschaft Dresden Device for compensating for yaw and/or roll movements of an agricultural sprayer
US9504211B2 (en) 2013-03-15 2016-11-29 Specialty Enterprises, Llc Planar linkage, methods of decoupling, mitigating shock and resonance, and controlling agricultural spray booms mounted on ground vehicles
US9945957B2 (en) 2013-03-14 2018-04-17 Agjunction Llc Machine control system and method
US10499561B2 (en) 2015-07-29 2019-12-10 Cnh Industrial America Llc Boom adjustment system and method
EP3679788A1 (en) 2019-01-10 2020-07-15 Deere & Company Vibration damper of a distributor system of rods on an agricultural spreader
EP2559332B2 (en) † 2011-08-15 2021-01-13 Amazonen-Werke H. Dreyer GmbH & Co. KG Agricultural distributor

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GB2530308A (en) 2014-09-19 2016-03-23 Norac Systems Internat Inc Suspension and positioning system for boom
GB201508250D0 (en) 2015-05-14 2015-06-24 Norac Systems Internat Inc Control system and method for a suspended boom sprayer
US10814341B2 (en) * 2017-11-07 2020-10-27 Cnh Industrial America Llc Armrest control center with spray boom control
US11523602B2 (en) 2019-04-29 2022-12-13 Cnh Industrial America Llc Spray boom for an agricultural machine
TR2022020609A2 (en) * 2022-12-27 2023-01-23 Oenallar Tarim Makineleri Anonim Sirketi Impact absorber for spraying arm to protect against ground impact.

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US4522841A (en) * 1981-10-09 1985-06-11 Centre National Du Machinisme Agricole, Du Genie Rural, Des Eaux Et Des Forets (Cemagref) Process for the stabilization with respect to a desired path of a member which is movably mounted according to at least one component of movement and its application to the stabilization of a spray manifold
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EP2559332B2 (en) † 2011-08-15 2021-01-13 Amazonen-Werke H. Dreyer GmbH & Co. KG Agricultural distributor
US9781915B2 (en) 2013-03-14 2017-10-10 Agjunction Llc Implement and boom height control system and method
WO2015139050A1 (en) * 2013-03-14 2015-09-17 Agjunction Llc Implement and boom height control
US10416314B2 (en) 2013-03-14 2019-09-17 Agjunction Llc Machine control system and method
US9945957B2 (en) 2013-03-14 2018-04-17 Agjunction Llc Machine control system and method
US9504211B2 (en) 2013-03-15 2016-11-29 Specialty Enterprises, Llc Planar linkage, methods of decoupling, mitigating shock and resonance, and controlling agricultural spray booms mounted on ground vehicles
WO2015040133A1 (en) * 2013-09-18 2015-03-26 Horsch Leeb Application Systems Gmbh Device for discharging fluid and/or solid active materials and method for controlling such a device
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CA2832993A1 (en) 2012-11-01
EP2701500A1 (en) 2014-03-05
AU2012247864A1 (en) 2013-11-07
DK201100331A (en) 2012-10-30
EP2701500A4 (en) 2014-12-10
US20140048368A1 (en) 2014-02-20

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