Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Reexamination Certificate
2008-03-04
2010-11-23
Benson, Walter (Department: 2837)
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
C318S599000, C318S600000, C318S677000
Reexamination Certificate
active
07839110
ABSTRACT:
A motor control system includes a first-type amplifier that receives a PWM instruction, a second-type amplifier that receives a positional instruction, a numerical control device, and a serial bus. The numerical control device includes a first processor that calculates a positional instruction of a motor, a DSP that calculates a PWM instruction of the first-type amplifier from the positional instruction, and a serial bus control circuit that outputs the PWM instruction of the first-type amplifier and the positional instruction of the second-type amplifier to the serial bus. The first-type amplifier generates a drive current signal of a motor directly from the received PWM instruction. The second-type amplifier includes a third processor that calculates a PWM instruction from the received positional instruction.
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Extended EP Search Report for EP08003976.1 dated Apr. 25, 2008.
Aizawa Yasuharu
Aoyama Kazunari
Komaki Kunitaka
Benson Walter
Fanuc Ltd
Lowe Hauptman & Ham & Berner, LLP
Luo David S
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