GB1289912A - - Google Patents

Info

Publication number
GB1289912A
GB1289912A GB1289912DA GB1289912A GB 1289912 A GB1289912 A GB 1289912A GB 1289912D A GB1289912D A GB 1289912DA GB 1289912 A GB1289912 A GB 1289912A
Authority
GB
United Kingdom
Prior art keywords
amplifier
output
fed
inputs
multiplier
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.)
Expired
Application number
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 filed Critical
Publication of GB1289912A publication Critical patent/GB1289912A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
    • B60T8/1708—Braking or traction control means specially adapted for particular types of vehicles for lorries or tractor-trailer combinations
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
    • A01B63/112—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements to control draught load, i.e. tractive force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/56—Devices characterised by the use of electric or magnetic means for comparing two speeds
    • G01P3/60—Devices characterised by the use of electric or magnetic means for comparing two speeds by measuring or comparing frequency of generated currents or voltages
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/161—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division with pulse modulation, e.g. modulation of amplitude, width, frequency, phase or form

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

1289912 Measuring speeds electrically ROBERT BOSCH GmbH 6 May 1971 [13 May 1970] 13495/71 Heading G1N [Also in Division G4] The ratio of the rotational speeds of a powered and an unpowered axle of a vehicle e.g. a tractor, is measured by an electronic ratio meter comprising two tachometer generators 11, 12, whose output frequencies are proportional to the two speeds, these outputs being fed to pulse shaper circuits 13, 13<SP>1</SP> producing pulse trains of corresponding frequencies and fixed pulse width which are fed to an analogue divider circuit 20 giving an output signal proportional to the ratio being measured. As shown each pulse shaper comprises an amplifier 14, 15, a Schmitt trigger 16, 17 and a monostable multivibrator 18, 19. The two pulse trains are fed on lines 25, 26 to a divider stage 20 comprising an operational amplifier 22 with two inputs 30, 31 and an output 32. A feedback loop 40 includes a multiplier 21 having an output connected to the input 30, and two inputs one of which is connected to the line 25. The output 32 is connected by an amplifier 23 to a meter or a control device 24 for operating a plough. Let U x , U y and U z be the signals at 27, 31 and 32 respectively. Therefore the inputs to the multiplier 21 are U x and U z and its output is U x .U z which is fed to input 30. If α is the gain of the amplifier 22 then and hence If αU z ” 1 then In the circuit for the divider stage 20 disclosed in Fig. 2 (not shown), the multiplier comprises a transistor 42 in the feedback loop of an amplifier 22. Phase reversal for the signal U y is effected by a transistor 41. A further embodiment Fig. 3 (not shown) includes a further operational amplifier in order to match the output signal with the control device the feedback loop being taken from the output of this amplifier. A transistor circuit diagram for the pulse shaper comprising amplifier 14, Schmitt trigger 16 and monostable vibrator 18 is disclosed, Fig. 4 (not shown).
GB1289912D 1970-05-13 1971-05-06 Expired GB1289912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702023346 DE2023346A1 (en) 1970-05-13 1970-05-13 Electronic slip measuring device

Publications (1)

Publication Number Publication Date
GB1289912A true GB1289912A (en) 1972-09-20

Family

ID=5770973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1289912D Expired GB1289912A (en) 1970-05-13 1971-05-06

Country Status (6)

Country Link
US (1) US3776322A (en)
AT (1) AT309597B (en)
CH (1) CH516161A (en)
DE (1) DE2023346A1 (en)
FR (1) FR2088533B3 (en)
GB (1) GB1289912A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913680A (en) * 1972-10-25 1975-10-21 Allis Chalmers Control system for percentage of wheel slippage of a tractor
US4053018A (en) * 1973-05-23 1977-10-11 Kabushiki Kaisha Komatsu Seisakusho Automatic control system for earth-moving equipment
US3957121A (en) * 1973-05-28 1976-05-18 Kabushiki Kaisha Komatsu Seisakusho Automatic control system for earth-moving equipment
JPS51124502A (en) * 1975-04-25 1976-10-30 Kubota Ltd Automatic depth controller
US4086563A (en) * 1975-07-10 1978-04-25 Dickey-John Corporation Wheel slippage monitor
US4263973A (en) * 1977-12-16 1981-04-28 Boulais Marcel J Laser beam level control with automatic override
NL7811964A (en) * 1978-12-08 1980-06-10 Lely Nv C Van Der TRACTOR.
FR2445967A1 (en) * 1979-01-05 1980-08-01 Muzellec Yvon Detection of rotational speed variation between e.g. aircraft wheels - by rotating magnets to induce voltages in coil assemblies connected to potentiometers
JPS5780926A (en) 1980-11-11 1982-05-20 Fuji Heavy Ind Ltd Transfer directing device of four-wheel driving car
DE3379025D1 (en) 1982-03-22 1989-03-02 Deere & Co Working depth control system for vehicle with ground working inplement
US4518044A (en) * 1982-03-22 1985-05-21 Deere & Company Vehicle with control system for raising and lowering implement
DE3235818A1 (en) * 1982-09-28 1984-03-29 Robert Bosch Gmbh, 7000 Stuttgart Device for controlling the working depth of a soil-cultivating appliance
US4503916A (en) * 1983-06-06 1985-03-12 Deere & Company Hybrid hitch control system
DE3413435A1 (en) * 1984-04-09 1985-10-17 Alfred Teves Gmbh, 6000 Frankfurt CONTROL DEVICE FOR MOTOR VEHICLES
DE3423032A1 (en) * 1984-06-22 1986-01-02 Alfred Teves Gmbh, 6000 Frankfurt CONTROL DEVICE FOR MOTOR VEHICLES
DE3522818C2 (en) * 1985-06-26 1994-07-21 Bosch Gmbh Robert Control device for position control of a working device articulated on an agricultural work vehicle via a lifting mechanism
CA1312129C (en) * 1986-03-04 1992-12-29 Honda Giken Kogyo Kabushiki Kaisha (Also Trading As Honda Motor Co., Ltd .) Traction control system for controlling slip of a driving wheel of a vehicle
DE3767923D1 (en) * 1986-05-09 1991-03-14 Honda Motor Co Ltd DRIVE CONTROL SYSTEM FOR CONTROLLING THE SLIP OF THE DRIVE WHEEL OF A VEHICLE.
CA1306784C (en) * 1986-06-09 1992-08-25 Masakazu Sakaguchi Method for controlling slip of a driving wheel of a vehicle
US4846283A (en) * 1987-09-08 1989-07-11 J. I. Case Company Engine-sensing draft control system with multiple feedback compensation mechanisms

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654301A (en) * 1946-05-23 1953-10-06 Deere & Co Draft control mechanism
US3060602A (en) * 1960-07-22 1962-10-30 Honeywell Regulator Co Control apparatus
US3477152A (en) * 1966-03-25 1969-11-11 United Aircraft Corp Control of earthmoving machinery
US3500190A (en) * 1967-06-23 1970-03-10 Gen Electric Vehicle velocity measuring system employing adjustable width pulse generating system
US3560854A (en) * 1967-10-16 1971-02-02 John I Moss Inc Pulse actuated speed responsive system
FR1560462A (en) * 1968-01-16 1969-03-21
US3617099A (en) * 1968-11-12 1971-11-02 Nissan Motor Antispin device for motor vehicles
US3614173A (en) * 1969-06-27 1971-10-19 Bendix Corp Slip command skid control

Also Published As

Publication number Publication date
AT309597B (en) 1973-08-27
CH516161A (en) 1971-11-30
FR2088533A7 (en) 1972-01-07
DE2023346A1 (en) 1971-12-02
FR2088533B3 (en) 1973-08-10
US3776322A (en) 1973-12-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees