A digital electric actuator controller

Abstract

The invention discloses a novel design scheme of a digital electric actuator controller based on an ARM embedded system platform using industrial Ethernet technology. The program uses high-performance ARM9 series microprocessors and embedded real-time Linux operating system. The digital electric actuator controller adopts Modbus TCP high-speed industrial Ethernet technology, and has two built-in redundant Modbus TCP Ethernet interfaces to realize information exchange with the upper monitoring system. The invention improves the real-time response capability and reliability of the electric actuator, provides a basis for realizing the diagnosis of the health state of the valve, and has remarkable economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of industrial control network, in particular to a field bus type digital electric actuator. Background technique [0002] Industrial control network is a kind of special communication network connected with industrial on-site measurement and control equipment. It is directly oriented to the production process and control, and shoulders the special task of the first-line measurement and control information transmission of industrial production operation. Therefore, the timeliness of data transmission in the network and Real-time system response is the most basic requirement of control system. With the development of smart instruments and information technology, industrial control network technology represented by field bus and industrial Ethernet technology has become a symbolic technology of the next generation of automation equipment. [0003] At present, there are more than 40 kinds of fieldbuses in the w...

AI Technical Summary

Problems solved by technology

[0012] 2. The actuator controller adopts ordinary single-chip microcomputer as the platform, and the field bus interface is realized through a special conversion board, and the information processing capability cannot meet the requirements of equipment status maintenance.

[0014] 3. Except for a very few fieldbus type electric actuators in foreign countries, almost all fieldbus type electric actuators use single-network communication at present, and the safety and reliability need to be improved.

[0015] Industrial sites have high requirements for system safety and reliability, and single-network communication cannot meet the requirements. Mature redundant dual-network communication technology must be used to improve system safety and reliability.

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