JPS5797103A - Working height controller of ground working machine - Google Patents

Working height controller of ground working machine

Info

Publication number
JPS5797103A
JPS5797103A JP55174147A JP17414780A JPS5797103A JP S5797103 A JPS5797103 A JP S5797103A JP 55174147 A JP55174147 A JP 55174147A JP 17414780 A JP17414780 A JP 17414780A JP S5797103 A JPS5797103 A JP S5797103A
Authority
JP
Japan
Prior art keywords
signals
pulse
working
signal
duties
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.)
Pending
Application number
JP55174147A
Other languages
Japanese (ja)
Inventor
Naoki Okita
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP55174147A priority Critical patent/JPS5797103A/en
Publication of JPS5797103A publication Critical patent/JPS5797103A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/18—Control of position or direction using feedback using an analogue comparing device delivering a series of pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Feedback Control In General (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)

Abstract

PURPOSE:To perform the stable move-up/down control with a reduced degree of the overshoot through a compact and inexpensive electronic control, by processing an analog signal after converting it into a pulse signal having a duty proportional to the size of the signal. CONSTITUTION:Analog electric signals E0 and E supplied from a setting mechanism 6 and a detecting mechanism 7 respectively are converted into pulse signals A and B having a certain period of duties (a) and (b) which are proportional to the signals E0 and E through square wave oscillating circuits 9 and 10. Then pulse control signals U and D having duties t1 and t2 corresponding to the duty deviation of both signals A and B are produced by an arithmetic circuit 11. The driving circuits 17 and 20 of a driver 4 for up/down movement are operated by the signals U and D.
JP55174147A 1980-12-09 1980-12-09 Working height controller of ground working machine Pending JPS5797103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55174147A JPS5797103A (en) 1980-12-09 1980-12-09 Working height controller of ground working machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55174147A JPS5797103A (en) 1980-12-09 1980-12-09 Working height controller of ground working machine

Publications (1)

Publication Number Publication Date
JPS5797103A true JPS5797103A (en) 1982-06-16

Family

ID=15973488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55174147A Pending JPS5797103A (en) 1980-12-09 1980-12-09 Working height controller of ground working machine

Country Status (1)

Country Link
JP (1) JPS5797103A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60168344U (en) * 1984-04-13 1985-11-08 ヤンマー農機株式会社 threshing equipment
JPS621001A (en) * 1985-06-26 1987-01-07 Kubota Ltd Drive control mechanism for actuator of working machine
JPS6340918A (en) * 1986-08-05 1988-02-22 Kubota Ltd Driving device for actuator
JPS63282809A (en) * 1987-05-15 1988-11-18 Kubota Ltd Elevation control device for working machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60168344U (en) * 1984-04-13 1985-11-08 ヤンマー農機株式会社 threshing equipment
JPS621001A (en) * 1985-06-26 1987-01-07 Kubota Ltd Drive control mechanism for actuator of working machine
JPS6340918A (en) * 1986-08-05 1988-02-22 Kubota Ltd Driving device for actuator
JPS63282809A (en) * 1987-05-15 1988-11-18 Kubota Ltd Elevation control device for working machine

Similar Documents

Publication Publication Date Title
JPS6438364A (en) Shifter for tube wheel
KR840008556A (en) Motor speed control
JPS5743596A (en) Drive control device for pulse motor
JPS55103097A (en) System for driving motor for moving stage
JPS56123014A (en) Overrun preventing device of program control device
JPS52147715A (en) Drive system in stepping motors
JPS5790105A (en) Remote controlling device for coordinates measuring instrument
JPS5216650A (en) Pulse width control circuit
EP0369782A3 (en) Drive circuit for operating an appliance such as a printer
JPS56123567A (en) Magnification controller for optical system scanning mechanism
JPS53120120A (en) Motor drive control circuit
JPS5777984A (en) Electronic clock
JPS5257798A (en) Plant data selecting device
JPS54162074A (en) Actuator controller
EP0425698A4 (en) Image forming apparatus
JPS5373715A (en) Sequential operation control device for refuse collecting vehicle
JPS53120359A (en) Digital-to-analog converter circuit
JPS5329498A (en) Position controlling device of control rod in reactor
JPS5769414A (en) Detection system for numeric control position
JPS56103755A (en) Control apparatus
JPS57201117A (en) Positioning apparatus
JPS6437988A (en) Sewing control apparatus of sewing machine
JPS55109678A (en) Protective circuit for dot printer
JPS5460670A (en) Positioning system
JPS5449482A (en) Process controller