Displacement control system for a vehicle axle

Details Displacement control system for a vehicle axle Displacement control system for a vehicle axle

2008-01-08

2008-01-08

Masih, Karen (Department: 2837)

Electricity: motive power systems

Positional servo systems

Pulse-width modulated power input to motor

C318S625000, C318S608000, C318S606000, C318S607000, C318S600000

Reexamination Certificate

active

10531244

ABSTRACT:
Provided is a motor control circuit in which the circuit structure is not complicated, which has a favorable response to the phase difference signal, and in which the signal variation caused by heat is small. This rotation control circuit of a motor includes: a PWM control circuit of the motor; a rotational speed sensor of the motor; a reference signal generation circuit10; a phase comparing circuit; and a divider for dividing the detected rotational speed signal of the motor; wherein the phase difference between the signal from the divider and the signal based on the reference signal is sought with the phase comparing unit, and this phase difference signal is supplied to the PWM control circuit.

REFERENCES:
patent: 3145797 (1964-08-01), Taylor
patent: 4625156 (1986-11-01), Komiya et al.
patent: 5548679 (1996-08-01), Kiyota
patent: 6433496 (2002-08-01), Kawagoshi
patent: 2004/0179830 (2004-09-01), Sunaga et al.
patent: 38 00 476 (1989-07-01), None
patent: 1 037 052 (2000-09-01), None
patent: 05-030602 (1993-02-01), None
patent: WO89/06117 (1989-07-01), None
Communication form Korean Patent Office regarding counterpart application, Oct. 19, 2006.

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