| 摘要 |
PURPOSE:To effect rotation control including the transient conditions of respective rotation modes by a method wherein the title controller is provided with a 1/N dividing means, a period detecting means, a speed error detecting means, detecting an error, a compensation gain operating means, operating a compensation gain to be compensated, a compensating means, effecting the compensation of a gain, and a driving means. CONSTITUTION:A speed error detecting process 82 is a process, detecting an error EV, with respect to a reference period obtained by a period detecting process 81, and the speed error EV, is obtained by subtracting the value of the reference period. The value of the reference period Ta is set by a reference period setting process 86. The gain dEV/dfn of the speed error EV, detected by a speed error detecting process 82, is in inverse proportion to the square of the output signal frequency (fn) of the 1/N dividing means 7 (or in proportion to the square of the output signal period of another 1/N dividing means 3). |
