Method for adjusting batch running track and space based on PLS model
A technology of running trajectory and adjustment method, which is applied in the direction of control/adjustment system, comprehensive factory control, instrument, etc., can solve the problems such as unable to find the reference trajectory, achieve more flexible adjustment, strong realizability, and save manpower and material resources Effect
Active Publication Date: 2019-03-19
JIANGNAN UNIV
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However, this method only obtains one operating trajectory, and when the operating trajectory is large, it may not be possible to obtain the subsequent reference trajectory
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[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0042]The present invention is based on the PLS model. When there are few operating trajectories, the adjustment space of the follow-up reference trajectories can be obtained. In this space, any operation trajectory can produce the expected product quality; when there are many operating trajectories , through the optimization method, the optimal follow-up reference trajectory is obtained, and the product quality obtained under this trajectory can be as close as possible to the expected product quality.
[0043] The overall scheme of the present invention is to first establish the PLS model of the batch production process, and thus define the knowledge space; The expected pivot is ...
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The invention discloses a method for adjusting a batch running track and space based on a PLS model. The method comprises the following steps of: establishing an intermittent process PLS model; determining a knowledge space; calculating a principal variable according to the expected product quality according to a PLS model inversion method; calculating a product design space from a principal variable space; in the product design space, finding out a solution which can ensure that the reference operation track before the current moment is exactly equal to (or closest to) a generated operation track; based on the solution, obtaining a subsequent operation track or operation space. Compared with three horizontal orthogonal experiments and response curved surfaces and other methods, the methodhas the advantages that the method is completely based on prior historical data, a large number of experiments are not required to be carried out under the condition of more input variables, and theobtained reference track is a smooth curve.
Description
technical field [0001] The invention relates to the field of batch process process condition design, in particular to a batch operation track and space adjustment method based on a PLS model. Background technique [0002] In the process of batch operation, under the conditions such as formula and initial conditions are determined, a certain operation trajectory corresponds to a certain product quality. In view of the short production cycle and fast transformation of the batch process, it is very important to design the running trajectory under the condition of given product quality. The traditional trajectory design methods mainly include three-level orthogonal experiment, response surface and so on. In recent years, the product design method based on PLS has been widely concerned and valued because the process operation data can be used to realize the design of the operation trajectory for product quality. This method establishes a PLS model based on the running trajector...
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IPC IPC(8): G05B19/418
CPCG05B19/41875G05B2219/32015Y02P90/02
Inventor 赵忠盖李庆华徐俭栾小丽王志国刘飞
Owner JIANGNAN UNIV