Title:
PREDICTIVE LEARNING CONTROL SYSTEM BASED UPON APPROXIMATE STEP RESPONSE
Document Type and Number:
Japanese Patent JPH04369002
Kind Code:
A
Abstract:
PURPOSE:To shorten a calculation time for a control input by sampling only first N step responses, and when a difference value is reduced at an attenuation ratio P, approximating succeeding step responses so as to reduce the number of step responses to be sampled as small as possible. CONSTITUTION:In a control system for applying an input to a target to be controlled so as to allow the output of the controlled target to be matched with an objective value repeating the same pattern at a fixed period, a control input u (i) at current sampling time (i) is expressed by u (i)=u (i')+sigma (i) and the shown equation I. In the equation I, u (i') is a control input at time i' preceding one period from the time (i), sigma (i) is a correction variable at the time (i), e (i) is a deviation at the time (i), N is the number of step response samples in the control system, M is the predictive number of steps for a control deviation, and gn (n=1 to N-1), Q and qm (m=1 to M) are constants determined by the sample value of a step response in the control system and weight applied to the predictive value of a control deviation.
Inventors:
TSURUTA KAZUHIRO
NAKAMURA YUJI
NAKAMURA YUJI
Application Number:
JP17309191A
Publication Date:
December 21, 1992
Filing Date:
June 17, 1991
Export Citation:
Assignee:
YASKAWA ELECTRIC CORP
International Classes:
G05B13/02; G05B13/04; G05B21/02; (IPC1-7): G05B13/02; G05B13/04; G05B21/02
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