发明名称 DIGITAL SERVO CONTROL METHOD, DIGITAL SERVO CONTROL DEVICE, STORAGE DEVICE, AND HEAD POSITION CONTROL METHOD
摘要 <p>In digital servo in which an output equation yd[k]=C x[k]+D ud[k], and a state equation x[k+1]=A x[k]+B ud[k] are executed, in order to reduce the average time lag that a control signal has, the second term D ud[k] (hereinafter referred to as a direct transfer term) of the output equation is outputted from an analog circuit and the first term C x[k] is outputted Ts/2 (where Ts is the basic operation cycle) early; or the direct transfer term of the output equation is executed at Ts/N (where N is a natural number of two or more) cycle and the first term is updated with the same time lag as the average time lag Ts/(2N) that the direct transfer term has; or the a0 term of a transfer equation is outputted from an analog circuit and the other terms are outputted Ts/2 early; or the a0 term of the transfer equation is executed at Ts/N cycle and the other terms are updated with the same time lag as the average time lag Ts/(2N) that the direct transfer term.</p>
申请公布号 WO2002025389(P1) 申请公布日期 2002.03.28
申请号 JP2001002840 申请日期 2001.03.30
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