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A control system and working method of an intelligent electric actuator

A technology of electric actuators and control systems, which is applied in the direction of engine components, valve operation/release devices, mechanical equipment, etc., can solve the problems of affecting the system stability, service life of electric actuators, low position accuracy, etc., and achieve intelligent improvement Good performance and damping characteristics, and the effect of improving control accuracy

Active Publication Date: 2016-04-06
YANGZHOU ELECTRIC POWER EQUIP MFG FACTORY CO LTD +2
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AI Technical Summary

Problems solved by technology

[0003] However, due to the gap between the mechanical transmission of the electric actuator and the braking inertia of the valve, there is often a large deviation between the target position of the valve and the actual stop position, resulting in extremely low position accuracy of the valve after braking. And directly affect the stability of the system and the service life of the entire set of electric actuators

Method used

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  • A control system and working method of an intelligent electric actuator
  • A control system and working method of an intelligent electric actuator
  • A control system and working method of an intelligent electric actuator

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Embodiment Construction

[0039] The present invention as Figure 1-9 As shown, the electric actuator includes a power mechanism and a control system, and the valve is driven by the power mechanism to open and close;

[0040] The control system includes a CPU, a triangular wave signal generating circuit, a sampling circuit, a signal processing circuit, an A / D conversion acquisition circuit and a feedback circuit;

[0041] Control the power mechanism and the triangular wave signal generating circuit through the CPU; compare the signals sent by the sampling circuit and the triangular wave signal generating circuit through the signal processing circuit, and process the generated results through the A / D conversion acquisition circuit After that, it is sent to the CPU; the feedback state (that is, the current real-time position state of the valve) is fed back to the CPU through the feedback circuit.

[0042] The sampling circuit includes a sampling resistor, an RC filter circuit, and a voltage follower cir...

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Abstract

The invention provides a control system and a work method of an intelligent electric execution mechanism. The control system is exquisite in structure, good in stability and capable of realizing the self-adaption on the dead zone of the electric execution mechanism, so the stability and damping properties of the electric execution mechanism are greatly improved. The control system comprises a CPU (central processing unit), a triangular wave signal generating circuit, a sampling circuit, a signal processing circuit, an A / D (analog / digital) conversion acquisition circuit and a feedback circuit; the power mechanism and the triangular wave signal generating circuit are controlled by the CPU; signals sent by the sampling circuit and the triangular wave signal generating circuit are compared by the signal processing circuit and a generated result is sent to the CPU after being processed by the A / D conversion acquisition circuit. The feedback state is fed back to the CPU by the feedback circuit. The control system and the work method of the intelligent electric execution mechanism meet the demands of a site valve on high reliability, self-adaption on the dead zone and good damping characteristic of the electric execution mechanism.

Description

technical field [0001] The invention relates to the field of control systems of electric actuators, in particular to the improvement proposed for the dead zone intelligent adaptive control system of electric actuators and its working method. Background technique [0002] In the prior art, the electric actuator is usually composed of a power mechanism (motor and transmission assembly) and a control system, and the power mechanism is controlled by the control system, so that the transmission assembly drives the valve to open and close; among them, the switching value of the valve is The position accuracy requirements are extremely high, that is, the final position of the valve after braking must be guaranteed to be within the preset dead zone range (the allowable upper and lower deviation range of the target position). [0003] However, due to the gap between the mechanical transmission of the electric actuator and the braking inertia of the valve, there is often a large devia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/04
CPCF16K31/046
Inventor 陈久松蔡军方超罗兆荣朱乐尧费向军张建祥陆子俊吴予乐
Owner YANGZHOU ELECTRIC POWER EQUIP MFG FACTORY CO LTD
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