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Single-channel servo control module

A servo control, single-channel technology, applied in the direction of servo motor components, engine components, fluid pressure actuators, etc., can solve the problems of no online monitoring function, lack of configuration software cooperation, complex structure, etc.

Inactive Publication Date: 2010-06-09
NANJING SCIYON AUTOMATION GRP
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] At present, the traditional servo control module in the steam turbine digital electro-hydraulic regulation system has poor reliability; PID regulation is realized by pure analog circuit, there are many mechanical potentiometers, and the structure is complicated; there is no configuration software to cooperate, and there is no good online monitoring function

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Embodiment Construction

[0026] A kind of single channel servo control module of the present invention, see figure 1 : It includes double-layer data redundancy interface 1, signal acquisition and detection interface 2, servo drive interface 3 and module main CPU processor 4, double-layer data redundancy interface 1 completes master station DPU 5 and module main CPU processor 4 The data exchange between them; the signal acquisition and detection interface 2 collects various feedback or control signals on site and sends them to the main CPU processor 4 of the module for calculation; the main CPU processor 4 of the module receives After the information detected by the data and signal acquisition and detection interface 2 is processed (P, PI, etc. adjusted), it acts on the electro-hydraulic servo valve through the servo drive interface 3 .

[0027] The present invention is specified as follows:

[0028] 1. Adopt dual-bus parallel working mode to realize redundant data transmission.

[0029] Since this m...

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Abstract

The invention discloses a single-channel servo control module which comprises a double-layer data redundancy interface, a signal collecting detection interface, a servo driving interface, and a module main central processing unit (CPU). The data redundancy transmission interface forms a data transmission channel, and is connected with the module main central processing unit. The signal collecting detection interface collects the valve position and the handle operating panel information, and is connected with the main central processing unit. The servo driving interface drives the on-site electro-hydraulic servo valve, and is connected with the main central processing unit. The data redundancy transmission interface exchanges data with the main station DPU. A valve position given signal sent by the DPU and an LVDT feedback signal of the on-site oil motor are processed by a PID adjuster in the main central processing unit, the servo current is outputted to drive the electro-hydraulic servo valve, and then the valve-regulating travel of the turbine is controlled. The invention can reliably run in a long period under poor industry environments, and can monitor various working states in the clamping pieces through communication ports, and the interior software can be upgraded on line.

Description

technical field [0001] The invention relates to a steam turbine valve regulating module, in particular to a single-channel servo control module. Background technique [0002] With the development of industrial automation technology, digital electro-hydraulic regulating system (DEH) of steam turbine has been widely used in various thermal power plants. The basic concept of digital control is to use computer technology for digital calculation and software programming to realize various control functions. In the production process, digital control has gradually become the main form of automatic control. But in an actual industrial control system, the output of digital control usually needs to be converted into power to drive the actuator of the controlled object. That is to say, there needs to be a fast response link between the computer and the controlled object, and the actuator of the controlled object needs to have a large enough driving force to fully respond to the outp...

Claims

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Application Information

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IPC IPC(8): F01D17/26F15B13/043
Inventor 李海康祖利辉杭哲姚美常
Owner NANJING SCIYON AUTOMATION GRP
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