Industrial online maintenance-free control system

A control system, maintenance-free technology, applied in the direction of total factory control, total factory control, electrical program control, etc., can solve the problems of high economic cost, large hardware composition, complex structure, etc., to reduce malignant accidents, ensure normal operation, The effect of online maintenance-free improvement

Active Publication Date: 2015-04-29
王为学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is on the basis of adopting the general-purpose control device, and then adopts a series of related control technologies to jointly form an industrial online maintenance-free control system, so as to overcome the problems of improving the reliability of the industrial control system by adopting the prior art. The hardware composition is huge, the structure is complex, and blindly rely on the defects of high economic cost

Method used

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  • Industrial online maintenance-free control system
  • Industrial online maintenance-free control system
  • Industrial online maintenance-free control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 ( figure 2 ):

[0032] The two control units are used to realize the mutual-aid two-way redundant control of the control objects A1-A2, B1-B2, and C1-C2; the DC power supplies in the two control units have two outputs: one of them is supplied to the substation. The corresponding DC power supply electronic switch input terminal is described, and the other output is connected in parallel with the input terminal of another DC power supply electronic switch. When a DC power supply fails, the DC power supply of the other control unit can be connected. Under the prerequisite of not increasing the number of DC power supply hardware, the extreme situation of simultaneous failure of two adjacent DC power supplies is eliminated, and the goal of online maintenance-free when the DC power supply fails is achieved.

[0033] The general control device in each control unit also outputs two sets of control signals, and each group of the same control signal is divided into two para...

Embodiment 2

[0034] Example 2 ( image 3 ):

[0035] Two control units are used to realize the online redundant control of the control objects A1-A2, B1-B2 and C1-C2. The general control device in each control unit outputs (two parallel) control signals to the respective control units. The power electronic switch control signal input terminal. The function of this connection is to turn off the driving power when a certain non-contact element (SCR) fails, and to start the two controls while removing the faulty general control device The mutual assistance redundancy function between the units is to ensure that the non-contact element (silicon controlled thyristor) of the general control device can achieve the goal of online maintenance-free when a failure occurs. .

Embodiment 3

[0036] Example 3 ( Figure 4 ):

[0037] Two control units are used to realize the mutual-assisted two-phase redundant control of the control objects A1-A2, B1-B2 and C1-C2, and a general control device in each control unit outputs a set of signals (simultaneously The two ports are connected in parallel to the control signal input of the control unit. Their connection function is: according to the pre-appointed program control requirements, when a general control device detects the output of another general control device When the signal fails, it can be judged that the CPU of the other general control device has failed, and the faulty general control device is immediately eliminated, and the mutual assistance redundancy function between the two control units is activated to realize when the general control device fails The goal of online maintenance-free is achieved when the CPU fails.

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Abstract

The invention relates to an industrial online maintenance-free control system. The control system comprises n control units controlling the operation of a plurality of actuating mechanisms and communicating with one another and is characterized in that each control unit comprises a direct current power supply, a direct current power supply electronic switch, a drive power supply electronic switch and a general purpose control device (patent number: 200810048034.2) The control system further comprises m parameter collecting and processing devices. Actuating mechanisms adopt different redundancy control modes by virtue of the control units according to respective different operation characteristics, and realize the online maintenance-free control for the whole control system. Through the adoption of the control system, not only the overall redundancy control for certain key production equipment is realized, but also online no maintenance of the whole industrial production control system is realized by realizing the composite applications of multiple redundant techniques of one single function device / component of the general purpose control device in the whole production control system and software and hardware techniques.

Description

Technical field [0001] The invention belongs to an electrical appliance control device, in particular to an industrial online maintenance-free control system. Background technique [0002] Throughout history, no matter what advanced modernity the industrial control technology has developed, the complete reliability of its control system has always been the goal pursued by people, especially for aerospace, star and arrow launch operation control, ocean navigation, deep-diving exploration, and nuclear industry. Operation and other fields with extremely high requirements for safe operation require that the adopted control device must ensure long-term normal operation without maintenance. In order to meet the above requirements, the overall backup redundant control method of the electrical control system is generally adopted at present, that is, two or more identical control devices are used to perform backup control on the same actuator. The backup redundant control is when a certai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 王为学
Owner 王为学
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