Electricity: motive power systems – Positional servo systems – Digital or numerical systems
Reexamination Certificate
2006-11-14
2006-11-14
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Positional servo systems
Digital or numerical systems
C318S603000, C318S626000
Reexamination Certificate
active
07135831
ABSTRACT:
A motor control method is provided in which a cycle between at least one of leading edges and trailing edges of a pulse signal is measured. The pulse signal is outputted from a pulse signal generator which generates a pulse signal every time a driven target is driven for a specified distance by a motor. A driving velocity of the driven target is calculated from the measured edge cycle. A manipulated variable of the motor is calculated such that the calculated driving velocity corresponds to a specified target velocity, and the motor is driven and controlled based on the manipulated variable. The driving velocity is replaced with a specified set velocity that is lower than the target velocity, when no output of edges from the pulse signal generator continues for and over a specified replacement determination time while the motor is driven and controlled.
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Baker & Botts L.L.P.
Brother Kogyo Kabashiki Kaisha
Ro Bentsu
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