Control apparatus and method for linear synchronous motor

Details Control apparatus and method for linear synchronous motor Control apparatus and method for linear synchronous motor

2011-02-15

2011-02-15

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Linear-movement motors

C318S400110, C318S372000

Reexamination Certificate

active

07888893

ABSTRACT:
The start timing of the pole position inference process of the linear motor installed vertically is delayed by a predetermined time after instruction of brake release. For example, from (1) increasing of the thrust instruction value of an ASR control system up to a predetermined value, (2) the movement (falling) distance of the moving part, or (3) the moving (falling) speed of the moving part, the release condition of the brake is detected and moreover after a predetermined time, the inference process of the pole position is started. The inference process of the pole position of a synchronous motor is fit to the release timing of a brake and a malfunction of the inference process and a runaway (falling in the vertical drive) of a moving part are prevented.

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Corresponding Japanese office action dated Aug. 25, 2009 with English translation.

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