Electricity: motive power systems – Induction motor systems
Reexamination Certificate
2006-04-18
2006-04-18
Duda, Rina (Department: 2837)
Electricity: motive power systems
Induction motor systems
C318S807000, C318S432000, C318S434000, C318S610000, C318S611000
Reexamination Certificate
active
07030588
ABSTRACT:
A control constant adjusting apparatus in a control apparatus of a robot or a machine tool, etc. is disclosed. This control constant adjusting apparatus includes a speed control part (12), an estimation part (13), an identification part (14) and an adjustment part (15). The identification part (14) makes identification of inertia J obtained from a ratio between a value |SFTr| in which an absolute value |FTr| of a value FTr obtained by passing a torque command Tref of the speed control part (12) through a predetermined high-pass filter is integrated with respect to time at a predetermined interval [a, b] and a value |SFTr′| in which an absolute value |Ftr′| of a value FTr′ obtained by passing a model torque command Tref′ of the estimation part (13) through a predetermined high-pass filter is integrated with respect to time at the same interval only when a speed Vfb′ of a model in the estimation part (13) matches with a motor speed Vfb in the speed control part (12) at a value other than zero.
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Inoki Keisei
Tsuruta Kazuhiro
Umeda Nobuhiro
Duda Rina
Kabushiki Kaisha Yaskawa Denki
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