Motor speed control systems

Details Motor speed control systems Motor speed control systems

2011-04-19

2011-04-19

Benson, Walter (Department: 2837)

Electricity: motive power systems

Plural diverse motor controls

Running-speed control

C318S625000, C318S563000, C318S565000, C388S811000

Reexamination Certificate

active

07928674

ABSTRACT:
A motor speed control system includes a pulse outputting device capable of outputting a pulse each time a motor rotates, a pulse interval determining device capable of determining a pulse interval between the pulses outputted, and a comparative value calculating device capable of obtaining a comparative value as the product of a first value and a second value. The first value can correspond to the pulse interval determined, and the second value can correspond to a set rotational speed of the motor. The system can further include a set value calculating device capable of obtaining a set value as the product of the second value and a third value and a controller capable of controlling a supply of power to the motor such that a difference between the set value and the comparative value decreases.

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