Anti-motor vibration control system and method for hydrogen fuel cell vehicles

Abstract

The invention discloses an anti-motor vibration control system of a hydrogen fuel cell vehicle, which includes a vehicle controller and a motor controller; When the vehicle is under the drivable power supply voltage, the vehicle controller determines whether to enter the motor anti-shake preparation state according to the state of the handbrake switch and the brake opening; The direction of the preload torque of the loaded motor and its transmission system. If the vehicle gear is in the forward gear at this time, the forward gear motor anti-shake strategy will be implemented. If the vehicle gear is in the reverse gear at this time, the reverse gear motor anti-shake strategy will be implemented. Shake strategy; the invention adds the motor anti-shake state to enter the identification and judgment logic, and does not perform anti-shake control when it is not necessary to enter the anti-shake control, which not only improves the energy utilization rate, but also avoids unnecessary energy consumption.

Description

technical field [0001] The invention belongs to the technical field of motor control for new energy vehicles, and in particular relates to a motor vibration prevention control system and method for hydrogen fuel cell vehicles. [0002] technical background [0003] With the popularization of new energy vehicles, more and more motors and reducers are used in various hydrogen fuel cell vehicles, and the reliability and difference of the mechanical structure of the motor and reducer make it possible to control the vehicle under the premise of ensuring the comfort of the vehicle. The difficulty of the motor increases. [0004] In the current state of the art, the motor anti-shake control technology is not yet very mature, and there are various implementation methods, and the existing solutions more or less have some deficiencies. The traditional motor anti-shake compensation algorithm is to reversely compensate the motor torque when the vehicle shakes to reduce the speed to redu...

AI Technical Summary

Problems solved by technology

If the clearance between the spline of the motor and the gear of the reducer, between the gear of the reducer and the gear of the reducer, and between the gear of the reducer and the transmission shaft changes, the original compensation coefficient Kp cannot meet the needs of vibration compensation, which will cause the original Therefore, it is necessary to continuously optimize the compensation coefficient Kp through big data, resulting in a complex anti-shake control program and a large amount of calculation

At the same time, the motor anti-shake function needs to consume a lot of energy of the whole vehicle. If there are problems such as not entering the anti-shake state identification and incomplete identification of working conditions in the vehicle anti-shake strategy, it will always be in the process of motor anti-shake control, which will cause The power performance of the whole vehicle is greatly reduced

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