GB1491711A - Servo steering system for motor vehicles - Google Patents

Servo steering system for motor vehicles

Info

Publication number
GB1491711A
GB1491711A GB45161/74A GB4156174A GB1491711A GB 1491711 A GB1491711 A GB 1491711A GB 45161/74 A GB45161/74 A GB 45161/74A GB 4156174 A GB4156174 A GB 4156174A GB 1491711 A GB1491711 A GB 1491711A
Authority
GB
United Kingdom
Prior art keywords
gear
motor
closed
switch
switches
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
GB45161/74A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to US05/616,130 priority Critical patent/US4026031A/en
Priority to DE19752542604 priority patent/DE2542604A1/en
Priority to IT7569374A priority patent/IT1047307B/en
Priority to FR7529262A priority patent/FR2286366A1/en
Priority to JP50114967A priority patent/JPS5160554A/ja
Publication of GB1491711A publication Critical patent/GB1491711A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/046—Controlling the motor
    • B62D5/0463—Controlling the motor calculating assisting torque from the motor based on driver input
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
    • B62D6/02—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to vehicle speed

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Power Steering Mechanism (AREA)

Abstract

1491711 Control of D.C. motors ROBERT BOSCH GmbH 18 Oct 1974 [19 Oct 1973] 45161/74 Heading H2J [Also in Division B7] A motor vehicle steering system comprises a gearbox having a plurality of forward gears and a reverse gear, and an electric motor for influencing steering linkage movement in a direction corresponding to a manually steered direction, at least the lowest forward gear and reverse gear, but not at least the highest forward gear, having a switching arrangement associated therewith which is actuated on engagement of one of the associated gears, the motor only being energizable when said arrangement is actuated. As illustrated in Fig. 1 switches 14, 15 are closed upon first gear and reverse gear, respectively, being engaged. With one of these switches closed and upon closing switch 18 or 19 in dependence on the movement of contact 20 by the steering wheel, the appropriate solenoid 16, 17 will actuate its contact 21 or 23 to energize electric motor 10 which assists the manual steering. In the system of Fig. 2, switch 32 is closed by engaging of first and reverse gear, switch 30 is closed by selection of second gear and switch 31 is closed by selection of third gear. The fourth gear has no switch associated therewith. As a higher gear is selected so the maximum torque developed by the motor is reduced by closure of switches 34, 35, 36 which determine whether none, one or both of resistors 37, 38 are connected in series with the motor. Alternatively these resistors may be replaced by a variable resistor whose resistance is caused to vary in dependence on the vehicle speed, e.g. by a centrifugally operated adjusting device. In a further system similar to that of Fig. 1 the operating current of the motor is adjusted in inverse proportion to the voltage produced by a tachogenerator (51) responsive to vehicle speed, this voltage being applied to a differential amplifier (61) controlling a transistor (62) in series with the motor, Fig. 4 (not shown). Feedback of motor current to the amplifier (61) ensures constant current operation for the existing vehicle speed.
GB45161/74A 1973-10-19 1974-09-24 Servo steering system for motor vehicles Expired GB1491711A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US05/616,130 US4026031A (en) 1974-09-24 1975-09-24 Surface measurement instruments
DE19752542604 DE2542604A1 (en) 1974-09-24 1975-09-24 METHOD AND DEVICE FOR DETERMINING THE COORDINATES OF THE CENTER OF CURVING OF A CURVED SURFACE
IT7569374A IT1047307B (en) 1974-09-24 1975-09-24 SURFACE MEASUREMENT INSTRUMENT
FR7529262A FR2286366A1 (en) 1974-09-24 1975-09-24 METHOD AND DEVICE FOR DETERMINING THE CENTER OF CURVATURE OF A SURFACE
JP50114967A JPS5160554A (en) 1974-09-24 1975-09-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732352526 DE2352526A1 (en) 1973-10-19 1973-10-19 POWER STEERING DEVICE FOR MOTOR VEHICLES

Publications (1)

Publication Number Publication Date
GB1491711A true GB1491711A (en) 1977-11-16

Family

ID=5895904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45161/74A Expired GB1491711A (en) 1973-10-19 1974-09-24 Servo steering system for motor vehicles

Country Status (5)

Country Link
DE (1) DE2352526A1 (en)
FR (1) FR2248702A5 (en)
GB (1) GB1491711A (en)
IT (1) IT1022647B (en)
SE (1) SE7413098L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132950A (en) * 1982-11-30 1984-07-18 Aisin Seiki Power assisted steering arrangements
GB2188599A (en) * 1986-03-31 1987-10-07 Honda Motor Co Ltd Motor-driven power steering system

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758308A1 (en) * 1977-12-27 1979-07-05 Bosch Gmbh Robert Electric motor powered vehicle servo-assisted steering - uses motor current in place of steering moment as control reference
DE2838152A1 (en) * 1978-09-01 1980-03-13 Bosch Gmbh Robert POWER STEERING
DE2948181C2 (en) * 1979-11-30 1986-04-24 Gottlob Auwärter GmbH & Co, 7000 Stuttgart Device for controlling the steerability of a self-steering trailing or leading axle
DE2950670A1 (en) * 1979-12-15 1981-06-19 Bosch Gmbh Robert BATTERY-POWERED ELECTRIC VEHICLE
FR2552387B1 (en) * 1983-09-24 1990-08-17 Jidosha Kiki Co POWER STEERING CONTROL PARTICULARLY FOR MOTOR VEHICLES
JPS6085074A (en) * 1983-10-17 1985-05-14 Honda Motor Co Ltd Steering device for front and rear wheels of vehicle
US4527653A (en) * 1984-01-23 1985-07-09 General Motors Corporation Road load insensitive electric power steering system
DE3533487A1 (en) * 1984-09-20 1986-03-27 Nissan Motor Co., Ltd., Yokohama, Kanagawa REAR WHEEL ANGLE CONTROL ARRANGEMENT FOR VEHICLES WITH FOUR STEERING WHEELS
JPH0662093B2 (en) * 1985-03-29 1994-08-17 豊田工機株式会社 Electric power steering device
DE3530001A1 (en) * 1985-08-22 1987-03-05 Opel Adam Ag Steering aid for motor vehicles
US4800974A (en) * 1985-10-23 1989-01-31 Trw Inc. Electric steering gear
DE3544350A1 (en) * 1985-12-14 1987-06-19 Opel Adam Ag STEERING AID FOR MOTOR VEHICLES
JPS6320266A (en) * 1986-07-11 1988-01-27 Mitsubishi Electric Corp Motor-driven type power steering controller
DE3743061C1 (en) * 1987-12-18 1989-04-13 Opel Adam Ag Steering boost for motor vehicles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132950A (en) * 1982-11-30 1984-07-18 Aisin Seiki Power assisted steering arrangements
US4574903A (en) * 1982-11-30 1986-03-11 Aisin Seiki Kabushiki Kaisha Motor driven power steering system
GB2188599A (en) * 1986-03-31 1987-10-07 Honda Motor Co Ltd Motor-driven power steering system
GB2188599B (en) * 1986-03-31 1989-11-22 Honda Motor Co Ltd Motor-driven power steering system

Also Published As

Publication number Publication date
IT1022647B (en) 1978-04-20
SE7413098L (en) 1975-04-21
FR2248702A5 (en) 1975-05-16
DE2352526A1 (en) 1975-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee