Rotary-motor-loaded device and control characteristic...

Details Rotary-motor-loaded device and control characteristic... Rotary-motor-loaded device and control characteristic...

2006-07-19

2009-10-13

Benson, Walter (Department: 2837)

Electricity: motive power systems

Motor with diverse motions

C318S560000, C318S128000, C360S077020, C369S053180, C369S247100

Reexamination Certificate

active

07602129

ABSTRACT:
A motor drive control unit includes a chip in which everything about a control system is provided and controls a spindle motor which rotates magnetic disks at a constant speed. When a measurement instruction is received from a disturbance generating unit and the upper-level device, sine wave disturbance is generated in the revolution speed of the spindle motor which depends on the motor drive control unit. A speed detecting unit detects the revolution speed of the spindle motor as measured data while the disturbance is being generated by the disturbance generating unit. A measured data transferring unit transfers the detected measured data detected by the speed detecting unit to the upper-level device, wherein control characteristics such as gains and phases with respect to frequencies of the motor control unit are computed.

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