Anti-time lag flase-proportional integral control system and method

A proportional-integral control and time-delay technology, which is applied in control/regulation systems, simultaneous control of multiple variables, electric controllers, etc., can solve problems such as model mismatch sensitivity, instability, and poor robustness, and achieve parameter easy , parameter adjustment, design simple effects

Inactive Publication Date: 2009-03-11
DONGHUA UNIV
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Problems solved by technology

[0003] For the integral plus pure lag system, when the Smith predictor is used to control the process, the control performance is seriously affected by the model mismatch, and when the input disturbance exists, the system output has a residual error
Some literatures have proposed various control algorithms for this type of system, but these algorithms more or less have the following problems: 1) The design of the controller is complicated, and it is difficult to implement on site; 2) The tuning of the controller is cumbersome, and the parameters No intuitive physical meaning; 3) Very sensitive

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  • Anti-time lag flase-proportional integral control system and method
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  • Anti-time lag flase-proportional integral control system and method

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[0047] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0048] Such as figure 1 , 2 Shown, the outlet humidity of the simple tobacco drying process, and the process transfer function is given. This process is now described in more detail. The outlet humidity is not a simple process, although the transfer function between the value of the medium vapor pressure and the outlet moisture control variable is of the form (2). In order to limit interference from pressure and medium...

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Abstract

The invention relates to an anti-time pseudo-blocking proportional-integral control system and a method thereof. The system comprises a humidity controller and a moisture controller which are connected as a loop. A temperature control circular loop is introduced into a loop of a temperature controller and the humidity controller, therefore the whole system forms a feedback compensation loop. The invention provides the anti-time pseudo-blocking proportional-integral control system and the method thereof introduced on the basis of compensating time delay by the controllers, which is provided with the sections of an integration variable PI function and an anticipation function. Compared with the conventional control method, an anti-time pseudo-blocking PI controller has simpler design and easily adjustable parameters.

Description

technical field [0001] The invention belongs to the field of industrial control, and in particular relates to a time-delay-resistant pseudo-proportional-integral control system and method used in the shredded tobacco drying process of a cigarette factory. Background technique [0002] Time-delay integral processes are often encountered in industrial processes, and some first-order processes with relatively large time constants are also regarded as integral systems. Research on time-delay-integral processes has been carried out, and many control algorithms have been proposed. This type of process is easily affected by time lag in terms of system performance and stability, and it is difficult to obtain satisfactory control results. In recent years, many scholars have done a lot of research work on this, and have achieved rich results. [0003] For the integral plus pure lag system, when the Smith predictor is used to control the process, the control performance is seriously ...

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Application Information

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IPC IPC(8): G05B11/42G05D27/02A24B3/10
Inventor 任正云罗平
Owner DONGHUA UNIV
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