EP0334412A1 - Device for controlling the dynamic stresses transmitted by the rolling surface to the body of a vehicle, in particular a rail and tram vehicle - Google Patents

Device for controlling the dynamic stresses transmitted by the rolling surface to the body of a vehicle, in particular a rail and tram vehicle Download PDF

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Publication number
EP0334412A1
EP0334412A1 EP89200477A EP89200477A EP0334412A1 EP 0334412 A1 EP0334412 A1 EP 0334412A1 EP 89200477 A EP89200477 A EP 89200477A EP 89200477 A EP89200477 A EP 89200477A EP 0334412 A1 EP0334412 A1 EP 0334412A1
Authority
EP
European Patent Office
Prior art keywords
signal
suspension
value
acceleration
vehicle
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.)
Withdrawn
Application number
EP89200477A
Other languages
German (de)
English (en)
French (fr)
Inventor
Alessandro Marzocco
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.)
Socimi-Societa Costruzioni Industriali Milano SpA
Societa Costruzioni Industriali Milano SpA SOCIMI
Original Assignee
Socimi-Societa Costruzioni Industriali Milano SpA
Societa Costruzioni Industriali Milano SpA SOCIMI
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 Socimi-Societa Costruzioni Industriali Milano SpA, Societa Costruzioni Industriali Milano SpA SOCIMI filed Critical Socimi-Societa Costruzioni Industriali Milano SpA
Publication of EP0334412A1 publication Critical patent/EP0334412A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/22—Guiding of the vehicle underframes with respect to the bogies
    • B61F5/24—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes
    • B61F5/245—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes by active damping, i.e. with means to vary the damping characteristics in accordance with track or vehicle induced reactions, especially in high speed mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/04—Bolster supports or mountings
    • B61F5/12—Bolster supports or mountings incorporating dampers
    • B61F5/127—Bolster supports or mountings incorporating dampers with fluid as a damping medium

Definitions

  • the present invention relates to a device for controlling the dynamic stresses transmitted by the rolling surface to the body of a vehicle, in particular of a rail and tram vehicle.
  • suspensions are therefore capable of yielding satisfactory performances only under certain conditions, and for certain intensitites and/or directions of the dynamic stresses which appear during the traveling of the vehicle, for which they display a more or less optimum behaviour. In different situations, on the contrary, they show to be insufficient in order to secure a good comfort to the passengers of the vehicle.
  • the purpose of the present invention is to provide a device for controlling the dynamic stresses transmitted by the rolling surface to the body of a vehicle, in particular a rail and tram vehicle, which is capable of supplying differentiated performances of the elements of the suspension, method to the different dynamic conditions which occur from time to time during the traveling of the vehicle, thus securing a better comfort for the passengers of the same vehicle.
  • the modulus and/or the frequency of the dynamic stresses of any kinds, applied to the traveling vehicle are hence recognized.
  • the device finds out and performs the modifications in the characteristics of the elastic components and of the damping components of the suspension.
  • a device can be applied both to vehicle running on rail, in which case the acceleration should be suitably detected by detecting its three components, i.e.: in the traveling direction, transversely to the running direction and perpendicularly to the rolling plane; and to road vehicles, in which case detecting the acceleration and correcting the characteristics of the suspension in one direction only, normally in the vertical direction, is enough.
  • a constrained-drive vehicle 1 running of a track 2
  • a truck 3 of trailer type which supports the body 4 of the vehicle.
  • the primary suspension 7, of known type can be seen, and between the frame 6 and the vehicle body 4 the secondary suspension 8 can be seen, which supports the swing bolster 9 on which the vehicle body 4 rests.
  • the elastic elements in the herein depicted specific case: air springs 10, and the damping elements, in the herein depicted specific case: vertical dampers 11 and transversal dampers 12, are visible. Also, longitudinal dampers, not shown, can be present.
  • a device comprises at least one accelerometer 13, fastened to the vehicle body 4 in such a way as to detect the accelerations of the body in at least one direction of the traveling vehicle.
  • the set of three accelerometers 13 is suitable for detecting the function of acceleration vs. time, decomposed into the three elementary functions according to the three reference axes as above indicated.
  • the three elementary funtions defined by the accelerometers 13 are used as the inputs to a control system, which carries out adjustments in the elastic elements and in the damping elements of the suspension, suitably modifying the characteristics of said elements according to preset laws, as it will be seen hereinunder.
  • a signal generator 14 is associated, in which the generated signal represents the function of the component of the acceleration in the relevant direction vs. time.
  • the signal generated by each signal generator 14 is sent to a processing/comparing unit 15, in particular a microprocessor, which is capable of carrying out a processing and an evaluation of the signal, as we'll see in the following.
  • the processing/comparing unit 15 essentially comprises a detector 16 which detects the amplitude of the signal indicative of the acceleration, a detector 17 which detects the fundamental frequency of the signal 14 of the acceleration and, possibly, also of the most meaningful harmonic frequencies, and a detector 18 which detects the average value of the signal 14. With each one of the detectors 16, 17 and 18, a relevant comparator 19, 20, 21 is associated, which is suitable for comparing the detected value to a relevant prefixed value.
  • the output from the comparators 19, 20 and 21 is connected with a control unit 22, suitable for emitting the command signals which enable it to drive an actuator 23 according to the result of the comparisons carried out, as we'll see in the following.
  • the actuator 23 acts on the elastic elements and/or on the damping elements of the secondary suspension 8, which are so made, as to be adjustable.
  • the adjustment of the characteristics of the springs 10 can take place by means of the addition, or of the exclusion of one or more additional air containers 24 by means of electrovalves 25 controlled by the actuator 23.
  • the adjustment of the characteristics of the damping elements 11 or 12 can take place by adjusting the passage ports between the chambers of the shock absorbers which, per se, can be of a known type. The adjustment of the passage ports will be carried out by means of the actuator 23.
  • the symbols f xm , f ym , f zm indicate prefixed minimum values of frequency of acceleration signals, as respectively detected in the three x , y , z directions; the symbols A xm , A ym A zm respectively indicate prefixed minimum values of the acceleration in the three directions; and the symbols A xm , A ym , A zm indicate relevant prefixed maximum values.
  • a x (t o ), A y (t o ), A z (t o ) are the values of the acceleration at the time point t o
  • f x (t o ), f y (t o ), f z (t o ) are the values of frequency at time t o .
  • C x , C y , C z are the coefficients of the damping elements in the three directions.
  • the value of the acceleration is detected, with the values of its three different components being detected. If the value of acceleration signal is respectively lower than A xm , A ym , A zm value, prefixed as the threshold value which does not result to compromise the comfort of the passengers, no changes in the characteristics of the elastic constant, and of the damping constant of the components of the suspension are carried out, with the values of these constants being hence kept unchanged.
  • the adjustment system intervenes, with it discriminating its action type, as a function of the value of the frequency of the signals of acceleration, and precisely as follows.
  • the frequency value, processed in the block 15 as hereinabove disclosed is lower than the relevant prefixed minimum value (respectively f xm , f ym , f zm ), then an increase in the damping constant (C x , C y , C z ) of the damping elements 11 and 12 is commanded.
  • a frequency higher than the above-said minimum value on the contrary a reduction in the damping constant is commanded.
  • the action is carried out as a function of the average value of the signal of acceleration within a given time lateral ⁇ t.
  • a maximization of the flexibility of the elastic components is carried out, i.e., the stiffness of the elastic suspension 8 is rendered minimum, with the value of the damping coefficient of the damping elements being simultaneously reduced to its minimum.
  • a correction in the attitude of the vehicle 1 can be furthermore carried out either in continuous, or in a discrete, multi-stage way, which is essentially based on the principle consisting of decreasing the volume, and hence the height, of the suspension facing the centre of the bend along which the vehicle runs, and of increasing the volume, and hence the height, of the elastic suspension facing the outside of the bend.
  • a control of the rolling angle can be carried out, in the sense of giving the vehicle body such an inclination, as to reduce the centrifugal force applied to the passengers.
  • the device according to the present invention is particularly suitable for being associated with a truck of the variable-attitude type, such as the one as disclosed in Italian patent No. 1,175,889 by the same Applicant, and as shown in Figure 5.
  • the processing of the accelerometric signals by the microprocessor 15 can take place both in parallel, or according to a serial route.
  • a device according to the present invention could be given such a structure, as to partially act on the primary suspension, and partially on the secondary suspension, distributing and metering in an optimum way the action on both suspensions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
EP89200477A 1988-03-18 1989-02-27 Device for controlling the dynamic stresses transmitted by the rolling surface to the body of a vehicle, in particular a rail and tram vehicle Withdrawn EP0334412A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8819844A IT1216147B (it) 1988-03-18 1988-03-18 Dispositivo per il controllo delle sollecitazioni dinamiche trasmesse dalla superficie di rotolamento alla cassa di un veicolo, in particolare un veicolo ferrotramviario.
IT1984488 1988-03-18

Publications (1)

Publication Number Publication Date
EP0334412A1 true EP0334412A1 (en) 1989-09-27

Family

ID=11161744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89200477A Withdrawn EP0334412A1 (en) 1988-03-18 1989-02-27 Device for controlling the dynamic stresses transmitted by the rolling surface to the body of a vehicle, in particular a rail and tram vehicle

Country Status (2)

Country Link
EP (1) EP0334412A1 (it)
IT (1) IT1216147B (it)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390546A3 (en) * 1989-03-31 1991-11-13 Hitachi, Ltd. Railway rolling stock
WO1993001076A1 (de) * 1991-07-10 1993-01-21 Abb Henschel Waggon Union Gmbh Drehgestell für schnellauffähige schienenfahrzeuge
EP0542386A1 (de) * 1991-11-11 1993-05-19 MANNESMANN Aktiengesellschaft Verfahren und Einrichtung zum Dämpfen der Schwingungen eines Schienenfahrzeuges
TR27839A (tr) * 1992-07-09 1995-08-31 Abb Henschel Waggon Union Cok süratli rayli tasitlar icin teker takimi (boji) mesnedi.
WO1999054704A1 (en) * 1998-04-17 1999-10-28 Koni B.V. System for monitoring the working of rotation or roll dampers
EP2361815A1 (de) * 2010-02-18 2011-08-31 Bombardier Transportation GmbH Aktive Kopplung zwischen Fahrwerk und Wagenkasten bei einem Fahrzeug
US9758138B2 (en) 2004-10-08 2017-09-12 Horizon Global Americas Inc. Brake control unit
US10040437B2 (en) 2004-10-08 2018-08-07 Horizon Global Americas Inc. Brake control unit
US10363910B2 (en) 2016-12-07 2019-07-30 Horizon Global Americas Inc. Automated gain and boost for a brake controller
US10946841B2 (en) 2016-09-16 2021-03-16 Horizon Global Americas Inc. Driver and diagnostic system for a brake controller
EP3892516A4 (en) * 2018-12-05 2022-08-24 CRRC Changchun Railway Vehicles Co., Ltd. DAMPING CONTROL METHOD AND DEVICE FOR SHOCK ABSORBERS OF A TRAIN
US12485837B2 (en) 2016-09-16 2025-12-02 Horizon Global Americas Inc. Combination of trailer braking and lighting functions

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2025572A (en) * 1978-07-14 1980-01-23 Hitachi Ltd Fluid apparatus for actively controlling vibration of a vehicle
EP0032158A1 (en) * 1979-07-20 1981-07-22 Hitachi, Ltd. Vibration controller for vehicle
EP0184960A1 (fr) * 1984-12-03 1986-06-18 A.N.F. Industrie Procédé et système d'amortissement des mouvements parasites des véhicules ferroviaires
GB2176162A (en) * 1985-05-31 1986-12-17 Hitachi Ltd Apparatus for controlling vibration of vehicle
FR2593455A1 (fr) * 1986-01-29 1987-07-31 Hitachi Ltd Dispositif de controle des vibrations pour vehicules.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2025572A (en) * 1978-07-14 1980-01-23 Hitachi Ltd Fluid apparatus for actively controlling vibration of a vehicle
EP0032158A1 (en) * 1979-07-20 1981-07-22 Hitachi, Ltd. Vibration controller for vehicle
EP0184960A1 (fr) * 1984-12-03 1986-06-18 A.N.F. Industrie Procédé et système d'amortissement des mouvements parasites des véhicules ferroviaires
GB2176162A (en) * 1985-05-31 1986-12-17 Hitachi Ltd Apparatus for controlling vibration of vehicle
FR2593455A1 (fr) * 1986-01-29 1987-07-31 Hitachi Ltd Dispositif de controle des vibrations pour vehicules.

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390546A3 (en) * 1989-03-31 1991-11-13 Hitachi, Ltd. Railway rolling stock
WO1993001076A1 (de) * 1991-07-10 1993-01-21 Abb Henschel Waggon Union Gmbh Drehgestell für schnellauffähige schienenfahrzeuge
AU652061B2 (en) * 1991-07-10 1994-08-11 Abb Henschel Waggon Union Gmbh Bogie for high-speed railway vehicles
EP0542386A1 (de) * 1991-11-11 1993-05-19 MANNESMANN Aktiengesellschaft Verfahren und Einrichtung zum Dämpfen der Schwingungen eines Schienenfahrzeuges
TR27839A (tr) * 1992-07-09 1995-08-31 Abb Henschel Waggon Union Cok süratli rayli tasitlar icin teker takimi (boji) mesnedi.
WO1999054704A1 (en) * 1998-04-17 1999-10-28 Koni B.V. System for monitoring the working of rotation or roll dampers
US6820460B1 (en) 1998-04-17 2004-11-23 Koni B.V. System for monitoring the working of rotation or roll dampers
US9758138B2 (en) 2004-10-08 2017-09-12 Horizon Global Americas Inc. Brake control unit
US12162461B2 (en) 2004-10-08 2024-12-10 Horizon Global Americas Inc. Brake control unit
US10040437B2 (en) 2004-10-08 2018-08-07 Horizon Global Americas Inc. Brake control unit
US10688977B2 (en) 2004-10-08 2020-06-23 Horizon Global Americas Inc. Brake control unit
US11400903B2 (en) 2004-10-08 2022-08-02 Horizon Global Americas Inc. Brake control unit
US11738729B2 (en) 2004-10-08 2023-08-29 Horizon Global Americas Inc. Brake control unit
EP2361815A1 (de) * 2010-02-18 2011-08-31 Bombardier Transportation GmbH Aktive Kopplung zwischen Fahrwerk und Wagenkasten bei einem Fahrzeug
US10946841B2 (en) 2016-09-16 2021-03-16 Horizon Global Americas Inc. Driver and diagnostic system for a brake controller
US12485837B2 (en) 2016-09-16 2025-12-02 Horizon Global Americas Inc. Combination of trailer braking and lighting functions
US12384336B2 (en) 2016-09-16 2025-08-12 Horizon Global Americas Inc. Driver and diagnostic system for a brake controller
US11731594B2 (en) 2016-09-16 2023-08-22 Horizon Global Americas Inc. Driver and diagnostic system for a brake controller
US10363910B2 (en) 2016-12-07 2019-07-30 Horizon Global Americas Inc. Automated gain and boost for a brake controller
US11440516B2 (en) 2016-12-07 2022-09-13 Horizon Global Americas Inc. Automated gain and boost for a brake controller
EP3892516A4 (en) * 2018-12-05 2022-08-24 CRRC Changchun Railway Vehicles Co., Ltd. DAMPING CONTROL METHOD AND DEVICE FOR SHOCK ABSORBERS OF A TRAIN

Also Published As

Publication number Publication date
IT8819844A0 (it) 1988-03-18
IT1216147B (it) 1990-02-22

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