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A Distributed Drive City Bus Multi-motor Fault Control Method

An urban bus, fault control technology, applied in the direction of control drive, electric vehicle, control device, etc., can solve the problem of unreasonable control strategy, and achieve the effect of reducing the number of fault combinations, preventing further damage, and ensuring stability

Active Publication Date: 2020-10-02
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-motor fault control method for a distributed drive city bus, which is used to solve the technical problem of unreasonable control strategy when one or more drive motors fail to stop directly when the vehicle is running

Method used

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  • A Distributed Drive City Bus Multi-motor Fault Control Method
  • A Distributed Drive City Bus Multi-motor Fault Control Method

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, the distributed vehicle has two drive shafts, corresponding to four drive motors independently driving four wheels on the two drive shafts to travel. Among them, the driving torque of No. 1 driving motor is T fr , the driving torque of No. 2 driving motor is T fl , the driving torque of No. 3 driving motor is T rr , the drive torque of drive motor No. 4 is T rl .

[0024] figure 2 The logic diagram of the multi-motor fault control method for distributed drive urban buses is given, including:

[0025] In the first step, the whole vehicle performs fault detection on the motor and motor controller, and judges whether it is a serious fault according to the detection results.

[0026] In the second step, if it is a serious fault, stop the power output of the corresponding motor; if it is a non-serious faul...

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Abstract

A multi-motor failure control method for a distributed drive city bus, comprising: when a failure occurs in a drive motor and a motor controller of a vehicle, determining whether the failure is a severe failure; if yes, stopping power output of the corresponding motor; and if not, limiting the power output of the corresponding motor. By hierarchically handling motor failures and only performing power output processing on a failed motor, the method effectively avoids the unreasonable phenomenon of directly stopping a vehicle once a failure occurs in a drive motor.

Description

technical field [0001] The invention relates to a multi-motor failure control method for a distributed drive city bus, which belongs to the technical field of vehicle failure control. Background technique [0002] In 2014, the "Guiding Opinions of the General Office of the State Council on Accelerating the Promotion and Application of New Energy Vehicles" proposed that pure electric drive is the main strategic orientation for the development of new energy vehicles. Therefore, major manufacturers have increased the research and development of pure electric drive vehicles. At present, most of the power systems of pure electric vehicles on the market are single-motor direct-drive systems. The control of this power system is simple and easy to implement. The distributed drive system has become an important development direction in the field of electric vehicles due to its advantages of fast response, short drive chain, compact structure, and flexible layout, including wheel-side...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20B60L15/36B60K1/02
CPCB60K1/02B60L15/20B60L15/36B60L2220/42B60L2240/12B60L2240/423B60L15/32Y02T10/72
Inventor 邹鹏飞郭鑫雷波王兴
Owner ZHENGZHOU YUTONG BUS CO LTD
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