Fault information collection and transmission method of motor control system

Abstract

The present invention discloses a fault information collection and transmission method of a motor control system. The method comprises the steps that: according to a preset time sequence, sampling offault information, being synchronous to motor real-time control, near fault points and asynchronous transmission of fault information are achieved, wherein when sampling of the fault information nearthe fault points is performed, and a buffering area is arranged to perform data buffering of the fault information and to perform data forwarding through the buffering area when the fault informationis transmitted. In a condition without changing a current bus system, a low-speed network can be also used to effectively perform diagnosis of the fault of the real-time motor control system, and thesampling of the fault information is synchronous to the motor real-time control cycle to distinguish the successive sequence of generation of the faults so as to improve the analysis accuracy of faultpositioning.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a method for collecting and transmitting fault information of a motor control system. Background technique [0002] A motor is an electromagnetic device that converts or transmits electrical energy according to the law of electromagnetic induction. A motor that converts mechanical energy into electrical energy is called a generator; a motor that uses electrical energy to generate drive torque is called a motor, which is used as a power source for various electrical appliances or various machines. Traditional motor speed control methods include: series resistance speed regulation, frequency conversion speed regulation, and pole-changing speed regulation. Modern motor speed regulation is a digital control method that uses high-performance motion control chips (such as DSP) to implement vector control and direct torque control. The vector control technology was proposed ...

AI Technical Summary

Problems solved by technology

The combined application of CAN and motor control, the technical problem involved in the fault diagnosis system is the collection and transmission of fault information, the timeliness of information and the reliability of transmission directly affect the quality of the fault diagnosis system

[0005] However, the motor control system has many variables and a large amount of real-time data, and the speed of the low-speed communication network such as the CAN communication bus cannot meet the requirements. Therefore, how to diagnose the real-time motor control system to make the fault diagnosis method effective and the diagnosis quality high needs to be solved core issue of

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