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Double-assistance circular spherical steering system and control method thereof

A technology of steering system and dual power assist, applied in the field of steering system

Active Publication Date: 2017-05-31
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the power steering device fails, the driver needs to independently undertake the task of steering the car

Method used

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  • Double-assistance circular spherical steering system and control method thereof
  • Double-assistance circular spherical steering system and control method thereof
  • Double-assistance circular spherical steering system and control method thereof

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Embodiment Construction

[0064] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0065] Such as figure 1 As shown, the present invention has developed a dual power-assisted recirculating ball steering system, including a steering wheel, a steering column, a steering wheel angle sensor, a gear fan, a bidirectional worm gear reduction mechanism, a steering rocker arm, a steering tie rod, a vehicle speed sensor, a yaw Angular velocity sensor, electronic control unit, left booster motor and right booster motor;

[0066] One end of the steering column is fixedly connected with the steering wheel, and the other end is connected with the output end of the bidirectional worm gear reduction mechanism. The steering wheel angle sensor is installed on the steering column to obtain the steering wheel angle and transmit it to the electronic control unit. One input end of the two-way worm gear reduction mechanism is connected with the outpu...

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PUM

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Abstract

The invention discloses a double-assistance circular spherical steering system and a control method thereof. The system comprises a steering wheel, a steering tubular column, a torque sensor, a segment gear, a bidirectional gear and worm reducing mechanism, a steering rocker arm, a steering transverse pull rod, wheels, a vehicle speed sensor, a yaw velocity sensor, an electronic control unit and a left-right assistance motor. In a running process, the electronic control unit acquires signals of the torque sensor, the yaw velocity and the vehicle speed, difference between the perfect yaw velocity and the actual yaw velocity is calculated, the compensation torque of the double-assistance motor is recalculated by a designed adaptive fault-tolerant controller, and a ECU transmits pulse to control running of the adaptive fault-tolerant controller to finish control on stability of an automobile under the normal condition and under the condition that an actuator fails partially. Adaptive fault-tolerant control on the double-assistance circular spherical steering system can be realized, and reliability of the steering system and stability and safety of the automobile during running are improved.

Description

technical field [0001] The invention relates to the technical field of steering systems, in particular to a double-assist recirculating ball steering system and a control method thereof. Background technique [0002] The power steering system is a steering system that uses both the driver's physical strength and engine power as the steering energy, and is formed by adding an additional power steering device on the basis of the mechanical steering system. Under normal circumstances, only a small part of the energy required for the steering of the car is provided by the driver, and most of it is provided by the power steering device. However, when the power steering device fails, the driver needs to independently undertake the task of steering the car. [0003] For heavy vehicles, once the power steering device fails, the force applied by the driver to the steering knuckle through the mechanical transmission system may not be enough to deflect the steering wheel to achieve st...

Claims

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Application Information

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IPC IPC(8): B62D3/06B62D3/10G05B13/04
CPCG05B13/042B62D3/06B62D3/10Y02T10/72
Inventor 张寒赵万忠杨遵四王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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