Steering wheel road feel simulation device of automobile line control steering emulation test bench

Abstract

The invention discloses a steering wheel road feel simulation device of an automobile line control steering emulation test bench. The existing steering wheel road feel simulation device is lack of control on a damping motor. In the simulation device, a direction column is in bearing connection with a direction column support device; the top of the direction column is fixedly connected with a steering wheel; a damping worm wheel is fixedly arranged in the middle of the direction column; the bottom of the direction column is fixedly connected with an angular sensor by a coupler; the angular sensor is in bearing connection with an angular sensor bracket; the angular sensor bracket is fixedly connected with a direction column support plate; a damping motor is fixedly connected with the direction column support plate; the output shaft end of the damping motor is fixedly connected with a damping worm; the damping worm is matched with the damping worm wheel; the input end of the damping motor is connected with the output end of a damping motor controller; the input end of the damping motor controller is connected with the output end of an electronic control unit DSP (Digital Signal Processor) development board; the input end of the electronic control unit DSP development board is connected with the signal output end of the angular sensor. The simulation device acquires an optimal road feel by controlling the damping motor to generate damping.

Description

technical field [0001] The invention belongs to the field of automobiles, and relates to automobile steering technology, in particular to a steering wheel road feeling simulation device of an automobile steering by wire simulation test bench. Background technique [0002] The automobile steering system realizes the function of controlling the steering of the vehicle according to the driver's intention during the driving process of the vehicle, which plays an important role in the steering stability and safety of the vehicle during driving. The traditional mechanical steering system uses the mechanical connection between the steering structure and the steering actuator to transmit the driver's steering intention to realize the steering function. In order to improve driving characteristics, power steering systems have been developed on the basis of traditional mechanical steering systems, such as hydraulic power steering systems and electric power steering systems. The common...

AI Technical Summary

Problems solved by technology

However, in the steer-by-wire system, the road feeling information cannot be transmitted to the steering wheel through the mechanical connection device like the mechanical steering device. Therefore, there must be a set in the steering system simulation test bench that can simulate the road feeling according to the driving conditions and road surface information and transmit it to the driver. Driver's device to ensure driving stability

[0005] At present, there are mainly two situations in the design and research of the road feeling simulation device: one is that the whole road feeling simulation device is composed of a spring damping system without a control system, such as the application number 201110185746.0 which discloses a Dampers, torsion springs and other devices that realize road feel simulation. This kind of device does not have a control system and cannot be controlled by artificial algorithm for road feel. The requirements for road feel are not high, and active road feel feedback cannot be performed; For example, the application number 201110024298.6 discloses a steering wheel road feel simulation device with adjustable rotation angle range. The motor at the end of the steering column generates corresponding resistance, and the length of the rack on the support plate is changed to adjust the steering wheel angle range. The device involves rack and pinion transmission, the structure is relatively complex, it takes up a lot of space, and at the same time, it lacks control over the road sense damping motor

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