An immune-optimized anti-counterfeit control method for the stretching link in the production process of polyester staple fiber
A polyester staple fiber and production process technology, applied in the field of immune optimization and anti-false control, can solve the problems of complex SPSA controller design, influence of control system stability, slow convergence speed, etc., achieve good transient response performance and good optimization effect , the effect of fast convergence speed
Inactive Publication Date: 2019-05-07
DONGHUA UNIV
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Problems solved by technology
The design of the SPSA controller is more complex (function approximator), the convergence speed is slower, and the controller parameters need to be disturbed in the closed-loop experiment, which may lead to the appearance of waste products
MFAC first establishes a dynamic linearization model for the nonlinear system, obtains the control law according to the control input criterion function, and then obtains the pseudo partial derivative according to the parameter estimation criterion function, and then obtains the control scheme. greater impact
Method used
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[0124] The present invention will be further described below in combination with specific embodiments. 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 teachings of the present invention, those skilled in the art can 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.
[0125] An immuno-optimized anti-counterfeiting control method for the stretching link in the polyester staple fiber production process, the stretching method in the stretching link is a two-stage stretching process, and the second stretching roller in the two-stage stretching process In the secondary stretching link between the sizing roller and the speed and temperature of the fiber stretching, the speed-temperature cou...
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The invention discloses an immune optimization innovation control method in stretch ring of production process of polyester staple fiber, wherein the stretch way in stretch ring is two-stage stretch technology; for the two-stage stretch ring between the second stretch roller and fixing roller,the fiber stretch speed and temperature is the speed of innovation control- temperature coupling control method. Based on data drive, innovation control algorithm is introduced to control stretch ring. Based on gather of candidate controllers, the algorithm calculates virtual reference signals and identifies innovation controller of present sampling time according to performance indexes. Compared with other data drive control methods, innovation control makes the system has better transient response performance and can maintain stability of the closed-loop system. According to non-innovative controller parameters obtained from innovation control, the method conducts immune optimization and switches non-innovative controller to closed control loop through selection, crossing and mutation operation, with better control effect.
Description
technical field [0001] The invention belongs to the field of automatic control, and in particular relates to an immune-optimized and false-removing control method for the stretching link in the polyester staple fiber production process. Background technique [0002] Polyester staple fiber is mainly used in cotton spinning industry, spinning alone or blended with cotton, viscose fiber, linen, wool, vinylon, etc. The obtained yarn is mainly used for clothing weaving, and can also be used for home decoration fabrics, packaging cloth, Filling and insulation materials. When producing polyester staple fiber, multiple strands are assembled together, wetted and oiled, and then dropped into a silk barrel. Then the finished product is obtained through processes such as bundling, stretching, crimping, heat setting, and cutting. The stretching link plays an extremely important role in the post-processing of fiber production and directly determines the final performance of the fiber. ...
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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 丁永生陈磊赵晨暐任立红郝矿荣
Owner DONGHUA UNIV