Wheel speed simulation method and system used in vehicle dynamics control simulation system

Abstract

The invention relates to a wheel speed simulating method and system used in an automobile dynamics control simulation system. The method comprises the following steps that (1) a wheel speed simulating system is set; (2) vehicle type selection and working condition setting are carried out, and the independent wheel speed of four wheels is sent to a whole vehicle simulation CAN bus; (3) a communication module receives a wheel speed data signal, the wheel speed data signal is transmitted to a square wave generating module, the square wave generating module generates PWM square wave signals, and the PWM square wave signals are sent to a gear ring motor driver; (4) the gear ring motor driver drives a gear ring motor; (5) a 15-bit absolute value encoder feeds back the wheel speed information of the gear ring motor to the gear ring motor driver; (6) the step (7) is executed if the preset wheel speed is achieved, and otherwise the step (5) is executed; (7) the wheel speed of a gear ring is measured, the step (8) is executed if the preset wheel speed is achieved, and otherwise a diagnosis module sends a diagnosis message, and the step (3) is executed after secondary feedback control is achieved;; (8) a Hall wheel speed sensor sends the wheel speed signal to a whole control unit (ECU).

Description

technical field [0001] The invention relates to the technical field of vehicle dynamics control, in particular to a wheel speed simulation method used in a vehicle dynamics control simulation system and a system thereof. Background technique [0002] The vehicle dynamics control simulation system test bench supports enterprises to calibrate and match the software and hardware of the developed ABS (anti-lock braking system) / ESP (electronic stability program) control system to the model to be matched, so as to develop ABS / ESP control Vehicle dynamics software and hardware in-the-loop simulation modeling technology, ABS / ESP control algorithm modularization and self-matching technology, full working environment, road, vehicle dynamic state multi-information virtual reality technology, ABS / ESP full engineering State simulation and performance testing technology, and the development of expert evaluation systems for various performance testing. The important conditions to support ...

AI Technical Summary

Problems solved by technology

Because the ABS ring gear has problems such as actual gear tooth processing errors and uneven sensor gaps, the wheel speed signal in the real vehicle state is volatile and will be mixed with various interference signals

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