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Electric drive bench test system on-line fault protection method based on real-time control bus

A technology for bench testing and real-time control, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve the problems of inability to realize coordinated logical protection of monitoring data, fast response time, and lack of flexibility. Achieve high reliability, fast response, and improved flexibility

Active Publication Date: 2019-11-26
CHINA NORTH VEHICLE RES INST
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method lacks flexibility. Its fault diagnosis technology monitors individual components and cannot realize the collaborative logic protection of monitoring data. Compared with traditional mechanical transmission, electric transmission system has the characteristics of faster response time and requires real-time fault cooperative processing. In the current processing method, there is a certain delay in manual fault handling, which often leads to secondary faults in the system

Method used

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  • Electric drive bench test system on-line fault protection method based on real-time control bus
  • Electric drive bench test system on-line fault protection method based on real-time control bus
  • Electric drive bench test system on-line fault protection method based on real-time control bus

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] This embodiment provides an online fault protection method for an electric drive bench test system with a real-time control bus, such as figure 1 As shown, the network architecture of the electric transmission bench test system is composed of a control network, a data monitoring network, and a device network. The control network not only includes the CAN bus control network, but also applies to all real-time control bus networks including FlexRay, TTE, TTCAN, etc. High-speed real-time network.

[0027] The integrated controller (EMT) is the control core of the entire electric drive bench test system. Its main function is to coordinate the collaborative work of other test equipment in the electric drive bench test system through bus communication, accept the control commands issued by the man-machine control interface, and Communicate with the left ...

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Abstract

The invention provides an electric drive bench test system on-line fault protection method based on a real-time control bus. The method is characterized by dividing an electric drive bench test systeminto different working modes for test and setting a bus communication protocol to receive and send fault data and fault state flags; judging the fault of each test equipment whose physical quantity monitoring data exceeds threshold limit as a minor fault, and the fault causing damage to the test equipment as a severe fault; when the test equipment has a fault, judging failure equipment and determining the fault type according to the fault data and fault state flags sent by the bus; if the fault is the minor fault, carrying out protection through a fault state monitoring mode and alarm reminding and by setting upper and lower limit protection values; and if the fault is the severe fault, carrying out corresponding shutdown processing according to the current working mode of the failure equipment. The method has fast online fault protection response and high efficiency.

Description

technical field [0001] The invention relates to the technical field of electric drive fault protection for special vehicles, in particular to an online fault protection method for an electric drive bench test system with a real-time control bus. Background technique [0002] At present, the main devices of the special vehicle electric transmission bench test system include generator, generator rectifier controller (GPD), left drive motor, left drive motor inverter, right drive motor, right drive motor inverter, integrated controller (EMT), coupling mechanism, loading motor, power motor, etc. The controllers communicate through the control bus to complete the coordinated control among the driving motor, generator, loading motor and power motor. [0003] In the process of realizing the fault diagnosis of the special vehicle electric transmission bench test system, the system fault detection method mostly uses sensors to connect the monitoring components. The sensor can monito...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213G05B2219/24065
Inventor 郭磊曾根李耀恒李欢欢生辉王灿宇李训明
Owner CHINA NORTH VEHICLE RES INST
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