Economical hardware-in-the-loop platform and test method for automotive steering-by-wire system

Abstract

The invention relates to an economical hardware-in-the-loop platform and a test method for an automobile steering system by wire, which belongs to the technical field of automobile wire control, and includes a host computer, a single-board computer connected to the host computer, and a platform equipped with an automobile steering system. frame platform; the automobile steering system includes a steering motor, the rotor of the steering motor is connected to the steering gear through a reducer and a coupling; the steering gear is connected to a rack and pinion through a steering tie rod, and the rack and pinion is connected to a magnetic powder brake , the magnetic powder brake is used to simulate the steering resistance in the steering process; the motor controller: connected with the upper computer and the steering motor, used to control the rotation of the steering motor; the incremental encoder connected with the steering motor, and the incremental encoder A multi-function data acquisition card connected to the host computer: to measure the steering motor angle signal for closed-loop control of the steering motor; programmable power supply: connected to the host computer and the magnetic powder brake to control the torque of the magnetic powder brake.

Description

technical field [0001] The invention belongs to the technical field of automobile wire control, and relates to an economical hardware-in-the-loop platform and a testing method of an automobile wire steering system. Background technique [0002] With the society's demand for energy saving and emission reduction and the pressure brought by energy anxiety, new energy vehicles have become the future development direction of the automotive industry. Vehicles with different energy types and different driving forms have been deeply studied by the automotive industry. The wire control technology is One of the popular areas. Steering by wire technology refers to the technology of canceling the mechanical transmission mechanism of the steering system and controlling the steering motor through various wiring harnesses. The advantages of this technology are: (1) safe, canceling the mechanical structure such as the steering column, which can prevent the mechanical structure of the steer...

AI Technical Summary

Problems solved by technology

At present, the hardware-in-the-loop equipment used in the industry mostly adopts the layout of the upper and lower computers. The upper computer performs parameter setting and code generation of the control algorithm, the lower computer runs the vehicle model, and the controller prototype communicates with the lower computer to verify the effectiveness of the control algorithm. , the supply of the lower computer in the above arrangement is mostly monopolized by foreign companies, and the market price is between hundreds of thousands to several million RMB, and is limited by the support of the lower computer supplier. When expanding the test function of the test bench , it is necessary to purchase expensive supporting boards from the same supplier, so the equipment arranged by the upper and lower computers has disadvantages such as high price, large volume, and high expansion cost

Images