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Linear quadratic fault-tolerant control method of batch process optimized by genetic algorithm

A genetic algorithm and linear quadratic technology, applied in the field of linear quadratic fault-tolerant control, can solve problems such as actuator failure

Active Publication Date: 2014-11-19
HANGZHOU DIANZI UNIV
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to propose a linear quadratic fault-tolerant control method for the batch process optimized by a genetic algorithm for the problem that the actuator may fail during the batch production process

Method used

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  • Linear quadratic fault-tolerant control method of batch process optimized by genetic algorithm
  • Linear quadratic fault-tolerant control method of batch process optimized by genetic algorithm
  • Linear quadratic fault-tolerant control method of batch process optimized by genetic algorithm

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Experimental program
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Embodiment Construction

[0069] Taking the control of injection speed in the injection molding process as an example

[0070] The control of injection speed in the injection molding process is a typical batch process, and the adjustment method is to control the opening of the proportional valve.

[0071] Step (1). Establish the extended state-space model of the injection process, the specific method is:

[0072] a. Establish a real-time operation database of the injection process, collect real-time process operation data through the data acquisition device, and use the collected real-time process operation data as a data-driven sample collection in, Indicates the opening degree of the i-th proportional valve, and y(i) indicates the actual output injection speed of the i-th group; based on the real-time process operation data set of the injection speed process, the local Controlled autoregressive moving average model:

[0073]

[0074]

[0075] Among them, y L (k) represents the actual out...

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Abstract

The invention puts forward a linear quadratic fault-tolerant control method of a batch process optimized by a genetic algorithm. The invention first establishes an extended state space model for the batch process by combining state variables and output tracking errors to better deal with possible unknown disturbances and actuator fault problems in the batch production process, and then optimizes a weighted matrix of an objective function by using the genetic algorithm, and finally designs the linear quadratic fault-tolerant controller. The invention not only guarantees a good tracking performance of the system under the condition of the unknown disturbances and the actuator faults, but also ensures that a form is simple and needs of an actual industrial process are met. .

Description

technical field [0001] The invention belongs to the technical field of industrial automation and relates to a linear quadratic fault-tolerant control method for a batch process optimized by a genetic algorithm. Background technique [0002] In recent years, in order to meet the market demands of multi-variety, multi-standard and high-quality, people pay more and more attention to the batch production process. However, in the batch production process, the actuator will inevitably have some failures, which makes it difficult for it to reach the designated position. Once a fault is not detected and corrected immediately, the control performance of the process will deteriorate and even cause serious safety problems. Therefore, it is very necessary to propose a new control method to solve the faults that the actuator may encounter during the execution process so as to maintain the control performance of the system. Contents of the invention [0003] The object of the present ...

Claims

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Application Information

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IPC IPC(8): G06N3/12G05B19/418G06Q50/04
CPCY02P90/02Y02P90/30
Inventor 张乐李海生张日东邹洪波吴锋
Owner HANGZHOU DIANZI UNIV
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