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Auto-control regulation algorithm and control instrument

A technology for controlling instruments and algorithms, applied in the direction of electrical program control, program control in sequence/logic controllers, etc., can solve problems such as fuzzy control, and achieve the effect of suppressing influence, small program, and improving control level

Inactive Publication Date: 2009-09-16
陈颐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For decades, automatic control has only PID regulation theory and method. PID regulator uses a digital model composed of a transfer function, and fuzzy control still uses pure digital reasoning, and has not jumped out of the original category.

Method used

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  • Auto-control regulation algorithm and control instrument
  • Auto-control regulation algorithm and control instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] like figure 1 As shown, the self-control adjustment algorithm described in this embodiment divides the control process into two situations: pushing the controlled system from one state to another, and the output at this time is called abnormal quantity; making the controlled system Maintaining a stable state in a certain state, the output at this time is called the maintenance amount; the abnormal amount is the estimated value obtained through the time-dependent transformation of the physical law applicable to the controlled system; after the controlled system reaches the required state , the change of the abnormal quantity is the maintenance quantity, and the maintenance quantity is the value obtained by the physical law applied to the controlled system not changing with time. Output OU=f1(ΔA)+f2(ΔA), where ΔA is the difference Af between the set value A0 and the actual value, where f1(ΔA) is the abnormal value, and f2(ΔA) is the maintenance value. In the control proc...

Embodiment 2

[0017] like image 3 , Figure 4 As shown, the control instrument described in this embodiment mainly includes a housing 1, on which a data input interface 2 is provided, and the data input interface 2 is electrically connected to the control center 4 through a signal converter 3, and the signal converter 3 is The A / D converter and the control center 4 are electrically connected to the display device 6, the intensity selection button 7 and the output interface 8 arranged on the casing. Wherein the display device 6 is a liquid crystal display.

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Abstract

An auto-control regulation algorithm designed by the invention divides a control process into two situations: a controlled system is driven from one status to another status, and an output quantity at this moment is called a metamorphosis quantity; the controlled system is maintained in certain stable status, and the output quantity at this moment is called a maintenance quantity, wherein, the metamorphosis quantity is an estimated value that is derived from time change and through physical laws suitable for the controlled system; the metamorphosis quantity is changed into the maintenance quantity after the controlled system reaches the required status; the maintenance quantity is a value that is not derived from the time change and is through the physical laws suitable for the controlled system. The auto-control regulation algorithm has unexpectedly dramatic control effect due to an auto-tuning algorithm established on the basis of the concept of the maintenance quantity and the metamorphosis quantity, and has wider application range than a PID tuning algorithm. In addition, the algorithm is simple and is small in programs as well as can be used in the control programs of general automation instruments and can be even made into a regulation algorithm module in a programmable logic controller (PLC) or configuration software.

Description

technical field [0001] The invention relates to a control method and an instrument, in particular to an automatic control adjustment algorithm and a control instrument. Background technique [0002] The classic self-control adjustment theory was born before the computer age to solve the analog circuit control system. The units and actuator units in the analog circuit are transformed into transfer functions that can be interconnected to form a system model that is easy to analyze. For decades, automatic control has only had PID regulation theory and method. PID regulator uses a digital model composed of transfer function, and fuzzy control still uses pure digital reasoning, without jumping out of the original category. "Time" is a difficult problem to control and adjust. In PID, the two main control parameters are time parameters (integral and differential constants). If the setting is not good, it will easily cause oscillation, and it is difficult to set it correctly. This i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
Inventor 余瑶
Owner 陈颐
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