CN201464836U

CN201464836U - double-redundancy servo controller

Info

Publication number: CN201464836U
Application number: CN2009201079532U
Authority: CN
Inventors: 王兵; 王彪; 许斌; 黄建勋; 王庆峰; 孙燕华
Original assignee: No634 Research Institute Of China Aviation Industry No1 Group Corp; BEIJING RUISAI GREAT WALL AVIATION MEASUREMENT CONTROL TECHNOLOGY CO LTD
Current assignee: No634 Research Institute Of China Aviation Industry No1 Group Corp; BEIJING RUISAI GREAT WALL AVIATION MEASUREMENT CONTROL TECHNOLOGY CO LTD
Priority date: 2009-05-11
Filing date: 2009-05-11
Publication date: 2010-05-12
Anticipated expiration: 2019-05-11

Abstract

The utility model relates to a double-redundancy servo controller of an electro-hydraulic servo control system applicable to the fields of metallurgy and chemical industry. The controller comprises two independent passages and an interface board, wherein each independent passage comprises a digital board and a control board; the digital board and the control board are connected through a bus board and are connected with an external device through the interface board, and each passage is provided with a display unit. The utility model has the advantages that two passages can operate independently and can monitor the operating state of each other by adopting a double-redundancy structure, only one passage in the controller controls the electro-hydraulic servo system at the same time and the other passage is in the standby state, the controller is switched to the standby passage for continuous operation when a fault occurs in the operating passage so as to ensure reliable operation of the system, and a display window is installed in the controller to display the main operating parameter of the system in real time.

Description

Two remaining servo controllers

Technical field

The utility model relates to a kind of two remaining servo controllers that are applicable to the electrohydraulic servo-controlling system in metallurgy, the chemical field.

Background technology

At present, all used electrohydraulic servo-controlling system in the control of the axial flow blower static blade angle of each iron and steel of China, petrochemical enterprise, TRT differential pressure power generation and the control of atmospheric valve aperture, it realizes control to position, angle quickly and accurately in conjunction with servo controller, electrohydraulic servo valve, displacement transducer.In existing equipment, be mostly to adopt the operation of a control panel opertaing device, when the electro-hydraulic servo control device breaks down, will cause system out of control, and produce unpredictable consequence thus, it can not ordinary production be moved.

In a single day common servo controller all adopts the single channel working method, breaks down easily, and breaks down, manufacturer can only adopt and shut down the cancellation operation, changes the classic method of faulty equipment.Bringing very big inconvenience and loss to production, is that each field of metallurgy and chemical engineering enterprise of restriction keeps a big technical bottleneck lasting, the High-efficient Production operation.

Summary of the invention

The purpose of this utility model provides a kind of when the electro-hydraulic servo control device breaks down, two remaining servo controllers that equipment still can normally move.Technical solution of the present utility model is, controller is made up of two autonomous channels and an interface board, each autonomous channel comprises a digiboard and a control panel, digiboard is connected by bus bar plate with control panel and is connected with external unit by interface board, in each passage display unit is set.The advantageous effect that the utlity model has, the utility model adopts dual-redundancy structure, and two passages can both work alone, and monitoring the other side's duty.Controller has only a passage to participate in the Control work of electrohydraulic servo system at one time, and another passage is in holding state.When service aisle breaks down, controller will switch to the standby passage and work on, thereby provide assurance for system's reliably working.Controller is equipped with display window, but the s main working parameters of real-time display system.In electrohydraulic servo-controlling system,, can greatly improve functional reliability, thereby provide safeguard for the safe continuous service of system by the two remaining servo controllers of this utility model are installed.Simultaneously check the controller passage can be under the situation that does not influence system works after breaking down online replacing faulty channel, can greatly enhance productivity like this, reduce the risk and the loss that bring because of equipment failure.Show that by various field experiments this is a kind of relatively more novel, rational and effective protection system.

Description of drawings

Fig. 1 is that master of the present utility model looks the contour structures synoptic diagram;

Fig. 2 is a system works theory diagram of the present utility model.

Embodiment

Controller is made up of two autonomous channels and an interface board, each autonomous channel comprises 5,9 and

control panels

6,10 of a digiboard,

digiboard

5,9,

control panel

6,10 and interface board 8 are connected by bus bar plate 11 and are connected with external unit 12, and

display unit

2,4 is set in each passage.

The servo controller shell adopts 19 inches standard industry cabinets, and two passages of controller all are installed in the cabinet, and cabinet panel is provided with the power switch 1 of passage one and the power switch 2 of passage two.Controller is made up of 6 circuit boards, is respectively: the digiboard 9 of the digiboard 5 of passage one, the control panel 6 of passage one, interface board 8, passage two, the control panel 10 and the bus bar plate 11 of passage two.Two passages can be switched on simultaneously, and one in running order, and another is in holding state.Two passages are all monitored the duty of oneself, also monitor the other side's duty simultaneously, after the discovery fault, will switch to service aisle to the standby passage, and former service aisle quit work, and controller will provide alerting signal after two passages all break down.

When a passage breaks down by the work of another passage, can carry out online replacing and not influence the work of another passage faulty channel, so just can guarantee controller operation reliably and with long-term.

Controller panel is provided with working mode selection knob 7, is divided into 4 grades:

1---automated manner: i.e. the switching of service aisle is realized automatically by controller;

2---passage one mode: promptly controller is in passage one duty all the time;

3---passage two modes: promptly controller is in passage two duties all the time;

4---remote control mode: promptly which passage of controller is in running order is determined by external control signal.

In the real work, angular displacement transmitter 16 is used for measuring actual stator blade 15 angle signals, and (4～20mA) deliver to the two remaining servo controllers of BGC D-6921 as feedback signal to convert thereof into corresponding current signal.Controller also receives the 4～20mADC command signal from master-control room compressor flow regulator simultaneously.BGC D-6921 servo controller is compared these two signals in inside.The gained difference has reflected the gap between instruction expection valve position and the actual valve position, and difference finally produces a current signal that can drive electrohydraulic servo valve 13 through the PID calculation process with after amplifying.Under the control of servo-valve, power oil acts on servo-cylinder 14, drives stator blade 15 and reaches desired location, thereby realize the purpose that axial compressor stator blade 15 is regulated.

Embodiment

Require to carry out conceptual design according to system works; Adopt 19 inches standard industry cabinets (outsourcing) according to design proposal; Bus bar plate is installed in the cabinet, and 5 circuit boards of plug-in mounting on the bus bar plate are followed successively by: the digiboard and the control panel of the digiboard of passage one and control panel, interface board, passage two from left to right; Design the schematic diagram of each circuit board, determine the circuit board size, design making sheet figure and panel figure according to the cabinet size; Buying components and parts and external coordination circuit board manufacturing and panel; Carry out the assembling of controller then, comprise the Denso of circuit board, the Denso of cabinet assembling and cabinet inside; Debugging of controller (comprising hardware and software) and test; Carry out performance test (non-linear, repeated and every function) at last.

Claims

1. two remaining servo controller, it is characterized in that, controller is made up of two autonomous channels and an interface board, each autonomous channel comprises two digiboards (5 and 9) and two control panels (6 and 10), digiboard (5 and 9), control panel (6 and 10) and interface board (8) are connected by bus bar plate (11) and are connected with external unit (12), and display unit (2 and 4) is set in each passage.