Execution mechanism state detection method and device

Abstract

The embodiment of the invention discloses an execution mechanism state detection method and device. The method comprises the steps of obtaining operation parameters of an execution mechanism, wherein the operation parameters comprise liquid flow information, a control instruction of the execution mechanism and feedback information about the control instruction; inputting the operation parameters into a preset logic judgment knowledge base, wherein the logic judgment knowledge base comprises one or more judgment logics used for judging whether the executing mechanism fails or not, and each judgment logic is used for judging the failure of one executing mechanism; and judging the operation parameters through each judgment logic in the logic judgment knowledge base so as to determine the current state of the execution mechanism according to the judgment result of each judgment logic. According to the scheme of the embodiment, the state of the executing mechanism is effectively monitored, problems are found in time, and effective operation of the executing mechanism is kept all the time.

Description

technical field [0001] This article relates to industrial equipment control technology, especially a method and device for detecting the state of an actuator. Background technique [0002] Through the continuous development of various technologies, the automation level of thermal power generating units in my country is getting higher and higher, and machinery or automation equipment can be seen everywhere. The actuator is the bridge between the control system and the mechanical movement of the valve, and it is the main mechanism for the operation of the thermal power plant. Nowadays, the safety production requirements of thermal power plants are becoming increasingly strict, and the intelligent level of production links and basic equipment is constantly improving. To ensure efficient control, the "health" of the actuator is critical. [0003] In the thermal power plant control system, according to the location of the fault, the faults of the control system can be divided i...

AI Technical Summary

Problems solved by technology

In the closed-loop control system, the fault of the actuator is often covered by the feedback control effect, so that the fault performance is not obvious

In addition, the actuator itself often has serious nonlinear characteristics. Compared with other control system faults, the fault diagnosis of the actuator is more difficult.

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