Full-drive-by-wire four-wheel steering angle measuring system suitable for operating lever control

Abstract

The invention relates to a full-drive-by-wire four-wheel steering angle measuring system suitable for operating lever control. An angle sensor adopted by the steering angle measuring system is a non-contact sensor free of wire connection. Angle detection is conducted through optical media, and measurement is free of influences of temperature and magnetic fields. The steering angle measuring system is simple in structure and easy to integrate, effective match with an operating level of full-drive-by-wire four-wheel steering of operating level control and wheel assemblies can be achieved, the operating lever is provided with one steering angle measuring system in a matched mode, and the four wheel assemblies are provided with four steering angle measuring system in a matched mode. The steering angle measuring system is high in measurement precision, the signal transmission delay time is short, initial position correction and electronic limiting can be conducted on angles of wheels, the vehicle safety is improved through the multiple steering fault-tolerant capability, and the manufacturing cost is reduced through variable-range and variable-precision measurement.

Description

technical field [0001] The invention relates to the application of a rotation angle measurement system, more specifically, the invention relates to the application of a full-wire control four-wheel steering rotation angle measurement system suitable for joystick control. Background technique [0002] Steering by wire is an application of wire control technology in automotive products. It uses electronic actuators, sensors, and controllers to replace the steering, acceleration, and braking functions of traditional mechanical and hydraulic systems. It is convenient to drive and improves the overall performance of the vehicle. safety. The realization of wire control commands makes it possible to use new human-machine interfaces such as joystick control. Using the joystick instead of the steering wheel increases the space utilization of the cab, reduces secondary collision damage, and is more conducive to vehicle integration and one-side It is used by drivers with physical disa...

AI Technical Summary

Problems solved by technology

At present, the general-purpose angle sensor adopts the mechanical structure of gears. Due to mechanical friction, the hysteresis time is long and the measurement accuracy is poor. There is also an electromagnetic induction type angle sensor, which requires various electronic circuits to convert the original signal of the sensor into a suitable value for the application. Signal form, because there are more electronic components inside the sensor, they are more sensitive to temperature, and at the same time, due to the existence of permanent magnets, they are easily disturbed by external magnetic fields

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