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A commercial vehicle multifunctional electric recirculating ball steering system and its control method

A steering system, multi-functional technology, applied in electric steering mechanism, power steering mechanism, steering mechanism, etc., can solve the problems of small electric power steering assistance, single function, high redundancy, and achieve smooth and intelligent switching, reliable guarantee effect of improving safety

Active Publication Date: 2022-04-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a commercial vehicle multifunctional electric recirculating ball steering system and its control method, so as to solve the problems of the commercial vehicle electric power steering with less power and reliable steering by wire in the prior art. Poor performance and the single function of the steering system is difficult to adapt to the future development of the vehicle; the present invention combines the dual-rotor motor and a set of ordinary power-assisted motors to work together on the input end of the recirculating ball steering gear, and utilizes the high redundancy of the dual-rotor motor. The characteristics of high output torque and good reliability of wire control, and it is equipped with a shift fork assembly for synchronous and asynchronous rotation of the dual rotors, so as to realize the functions of wire control steering and electric power steering, and give full play to the advantages of recirculating ball steering High reduction ratio capability maximizes system power assist torque, realizes electric power assist function, simplifies the system, provides wire control function and ensures system reliability at the same time

Method used

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  • A commercial vehicle multifunctional electric recirculating ball steering system and its control method
  • A commercial vehicle multifunctional electric recirculating ball steering system and its control method
  • A commercial vehicle multifunctional electric recirculating ball steering system and its control method

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Embodiment Construction

[0086] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0087] refer to Figure 1-Figure 5 As shown, a commercial vehicle multifunctional electric recirculating ball steering system of the present invention includes: an electric power assist module, a mechanical transmission module and a control module;

[0088] The electric booster module includes: a dual-rotor motor module 14 and a booster motor 22;

[0089] The double-rotor motor module includes: rotor A13, upper end cover 36, stator 34, stator winding A35, stator winding B39, permanent magnet 37, bearing 29, bearing seat 38, rotor B15, synchronous ring 31, shift fork nut 30, dial Fork screw rod 32, fork drive motor 33 and lower end cover 40;

[0090] The upper end cover 36 and the lower end...

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Abstract

The invention discloses a commercial vehicle multifunctional electric recirculating ball steering system and a control method thereof, comprising: an electric power assist module, a mechanical transmission module and a control module; the electric power assist module includes: a double-rotor motor module and a power assist motor; The mechanical transmission module includes: steering wheel, steering shaft, coupling, recirculating ball steering gear, gear fan, gear fan shaft, steering straight tie rod, steering tie rod, steering knuckle arm, left trapezoidal arm, right trapezoidal arm, left steering knuckle, Right steering knuckle, left wheel and right wheel; The control module includes: electronic control unit, torque sensor, vehicle speed sensor, angle sensor and current sensor; It improves the system power assist torque, realizes the electric power assist function, simplifies the system, provides wire control function and guarantees the system reliability at the same time.

Description

technical field [0001] The invention belongs to the technical field of automobile mechanical steering, and specifically refers to a commercial vehicle multifunctional electric recirculating ball steering system and a control method thereof. Background technique [0002] The steering system commonly used in existing commercial vehicles is the Hydraulic Power Steering (HPS) system. Compared with the purely mechanical steering system, the HPS system has the advantages of mature and reliable technology, low cost, and can effectively improve the problem of heavy steering. However, it has high The steering stability is poor at high speeds, and the steering feels heavy at low speeds such as turning around on the spot. In order to solve these problems, domestic and foreign experts and scholars put forward improved electronically controlled hydraulic power steering (ECHPS) system and electrohydraulic power steering (EHPS) system on the basis of HPS system. Although the new technolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D3/08B62D5/04
CPCB62D3/08B62D5/0409B62D5/0421B62D5/0481B62D15/025B62D5/0415H02K7/14H02K16/00B62D5/003B62D5/046H02K7/06H02K7/08H02K16/02
Inventor 张自宇王春燕叶宇林赵万忠吴刚周小川栾众楷
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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