Batch process 2D constraint fault-tolerance control method through infinite time domain optimization

A fault-tolerant control and time-domain technology, applied in the advanced control field of automation technology, can solve the problems of uncertain initial value and inability to improve control performance

Active Publication Date: 2018-05-01
HAINAN NORMAL UNIV
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Problems solved by technology

[0007] In order to solve the above-mentioned technical problems, the present invention provides a 2D constrained fault-tolerant control method for batch processes with infinite time domain optimization, which effectively solves the problem that the control performance cannot be improved with the increase of batches an

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  • Batch process 2D constraint fault-tolerance control method through infinite time domain optimization

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Embodiment

[0116] The injection molding process is a complex industrial manufacturing process. The quality of injection molded products depends on material parameters, machine parameters, process parameters, and the interaction of these parameters. The quality of injection molded products includes many aspects, such as appearance quality, dimensional accuracy and mechanical (optical, electrical) performance and so on. Different users have different concerns about quality. These quality indicators are jointly determined by the materials, molds and process parameters used in the processing process. At the same time, various interference factors exist in different links in the injection molding process.

[0117] The injection molding process is essentially a multi-stage intermittent product production process. In each main stage, there are one or more key parameters that play a decisive role in the quality of the final product. The injection speed in the injection phase, the holding pressure...

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Abstract

The present invention belongs to the field of automation technology advanced control, and especially relates to a batch process 2D constraint fault-tolerance control method through infinite time domain optimization. An iteration learning control law is designed for a constraint fault control system model with interference, state errors and output errors are introduced, a Roesser model is employedto convert a dynamic model of an original system to a closed-loop system model expressed by a prediction mode, and the designed iteration learning control law is converted to a determined constraint update law; and according to the designed infinite optimization performance index and a 2D system Lyapunov stability theory, giving an update law real-time online design which can ensure the asymptotically stable closed loop system robustness in a linear matrix inequality (LMI) mode. The problem is solved that the control performance cannot be improved with the batch progressive increasing and theproblem of initial value indetermination batch process is solved, and finally, energy saving and consumption reduction are achieved, the cost is reduced, and the generation probability of accidents being harmful for personal safety.

Description

Technical field [0001] The invention belongs to the advanced control field of automation technology, and in particular relates to an infinite time domain optimized batch process 2D constrained fault-tolerant control method. Background technique [0002] Intermittent process has become one of the most important production methods in modern manufacturing industry. With the increase of production scale and complexity of production steps, the uncertainty in actual production has become increasingly prominent, which not only affects the efficient and stable operation of the system , Even threatening the quality of the product. Moreover, these complex operating conditions increase the probability of system failures accordingly. Among them, actuator failure is a common failure, which will affect the operation of the process and reduce the control performance, and even endanger personal safety. Although control methods such as iterative learning reliable fault-tolerant control appeared...

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Application Information

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IPC IPC(8): G05B19/048
CPCG05B19/048
Inventor 王立敏罗卫平余维燕王鹏
Owner HAINAN NORMAL UNIV
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