Smart electric control execution system supporting loop redundancy control and control method thereof

Abstract

The invention belongs to the technical field of electric execution mechanisms and relates to a smart electric control execution system supporting loop redundancy control. The smart electric control execution system supporting loop redundancy control includes a master control micro-control unit, a drive circuit connected with the master control micro-control unit, a signal processing circuit and an electric torque detection circuit. The smart electric control execution system supporting loop redundancy control is characterized by further including an auxiliary control micro-control unit; a man-machine display interface, a position transmitter, a Modbus loop redundancy communication card, a power module and a low-power dissipation processing circuit are connected with the auxiliary control micro-control unit. The master control micro-control unit is connected with the auxiliary control micro-control unit through an RS-232. The smart electric control execution system supporting loop redundancy control has both the original switching value and the 4-20mA analog volume communication functions; the smart electric execution mechanism can randomly combine analog volume control signals and Modbus loop redundancy control signals; loop redundancy control is a mature control technology of the DCS (Data Communication System), and improves the high reliability.

Description

technical field [0001] The invention belongs to the technical field of intelligent electric actuator control, in particular to an intelligent electric control execution system supporting loop redundancy control. Background technique [0002] Electric actuators are one of the three main instruments in the field of automation. With the intensification of manufacturing competition, manufacturers are more pursuing the reliability of production equipment. They are used in the automation of industries such as petroleum, chemical industry, metallurgy, light industry, food, building materials, and environmental protection. In some systems, the control devices are required to have extremely high reliability, especially those that control key production processes, often need to adopt redundant configurations. Redundant control makes the system not affected by local single faults during operation, and can realize online maintenance; at the same time, the normal operation of the system ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose an intelligent electric control execution system supporting loop control and its control method in view of the problem that the existing intelligent electric actuator cannot realize loop redundancy control and high reliability

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