Closed-loop control method and system based on power pulse width driving

A closed-loop control and closed-loop technology, applied in electric controllers, controllers with specific characteristics, etc., can solve problems such as low energy efficiency, complex PID application, and difficulty in optimal system setting, achieving automatic control and maximum energy efficiency. the effect of

Active Publication Date: 2020-05-12
GUANGZHOU SUNTRANS MEASUREMENT & CONTROL SYST
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  • Abstract
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Problems solved by technology

[0006] However, with the continuous development of closed-loop intelligence and intelligentization of industrial processes, when there are hundreds of feedback sensor information and closed-loop control links in the measurement and control process, the number of coefficients n will achieve a series increase, and the PID algorithm will be changed from one The order function becomes an extremely complex high-order function, and due to the correlation between the coefficients in the PID algorithm, it is difficult for the system to maintain the optimal setting, and manual adjustment of parameters is required
[0007] Because the PID control algorithm needs to repeatedly approach the measurement and control target according to the set parameters and adjustment coefficients, in order to ensure the stability of the system, the energy efficiency of the entire system must be ignored. Complicated, resulting in a large number of complex systems that cannot be automatically controlled, and require human intervention to adjust the coefficients based on experience to ensure the stability of the system

Method used

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  • Closed-loop control method and system based on power pulse width driving
  • Closed-loop control method and system based on power pulse width driving
  • Closed-loop control method and system based on power pulse width driving

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Embodiment 1

[0036] See figure 1 , which shows a flow chart of a closed-loop control method based on power pulse width drive for a multi-task, multi-objective closed-loop control system, the closed-loop control method includes the following steps:

[0037] Step 101, each controller pre-stores setting parameters that enable the corresponding controlled object to be in the required operating state, and the controller controls the corresponding driving object to implement driving, so that the corresponding controlled object is in the state corresponding to the setting parameters. operating status;

[0038] Step 102, setting each controller and its corresponding controlled power pulse width drive object and corresponding adjusted feedback parameters as a separate closed-loop block; wherein, the setting parameters include the final target setting corresponding to the final target feedback parameter parameter;

[0039] Step 103, the controllers in each closed-loop block detect the real-time fe...

Embodiment 2

[0046] See image 3 , which shows a system structure diagram of a multi-heat source, multi-task, multi-objective closed-loop control system, each controller is pre-stored with setting parameters that can make the corresponding controlled object in the required operating state, a single controller, and It controls the driving object of the real-time feedback parameter corresponding to the setting parameter, which is set as a separate closed-loop block; the setting parameter includes the final target setting parameter corresponding to the final target feedback parameter, and the real-time feedback parameter can be passed, as shown in the figure The solid line arrow refers to the direction of water flow, that is, devices such as valves and pumps adjust the controlled objects such as hot water tanks, constant temperature water tanks, etc., and the dotted line arrows refer to the driving objects, that is, the ignition device or flameout The adjustment of the device to the controlle...

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Abstract

The invention provides a closed-loop control method and system based on power pulse width driving. A plurality of blocks of a plurality of controllers are distributed in the system. Each closed-loop block detects the controlled object every other feedback detection period to obtain feedback parameters, and the feedback parameters are returned to the controller to be compared with corresponding setparameters; if the feedback parameter is not within the allowable error of the corresponding set parameter, determining that the feedback parameter is not within the allowable error; the driving object is started to adjust the feedback parameter of the controlled object to be within the allowable error of the set parameter. Therefore, the controlled object controlled by each closed-loop block realizes accurate optimal control on the feedback parameters; feedback recursion is carried out through optimal control of each closed-loop block, multi-target and multi-task stable operation adjusted bythe whole closed-loop control system is finally achieved, and the algorithm is not only suitable for a linear multi-task multi-target system, but also completely suitable for stable closed-loop control of a nonlinear system.

Description

technical field [0001] The present invention relates to a closed-loop intelligent control system and a new control method, in particular to a closed-loop artificial intelligence measurement and control method based on distributed multi-block multi-controller power pulse width drive to solve multi-target, multi-task and multi-controller existence And multi-task, multi-objective closed-loop control system. Background technique [0002] The closed-loop control theory that has been used in the field of process control in the global closed-loop intelligent field is the PID (Proportion, Integral, Differential) control algorithm proposed by British Albert Calendrer and others in 1936. This control algorithm was granted a US patent in 1939. The resulting PID algorithm formula is as follows: [0003] [0004] The system constructed by using the mechanism of this algorithm is based on a single-center analog control system. As a single-center measurement and control control system,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 郑贵林郑力铭
Owner GUANGZHOU SUNTRANS MEASUREMENT & CONTROL SYST
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