Absolute angular position calculation apparatus for a rotating m

Details Absolute angular position calculation apparatus for a rotating m Absolute angular position calculation apparatus for a rotating m

1997-07-21

1999-03-09

Ro, Bentsu

Electricity: motive power systems

Automatic and/or with time-delay means

Speed or rate-of-movement

318449, 318618, H02P 500

Patent

active

058805664

ABSTRACT:
An absolute angular position calculator for a rotating motor and a velocity control apparatus adopting the same, in which a separate pulse generator is not used. The motor is manufactured so that a modified frequency generator generates a modified frequency signal by removing one pulse from the predetermined number of pulses of a frequency signal, by changing a duty of one pulse of the frequency signal, or by changing a magnitude of the frequency signal. When the motor is in use, a modification point of the frequency signal is detected to produce an absolute angular position which is used for producing a disturbance correction value, via learning, to be stored. Velocity control is performed using the stored disturbance correction value. Thus, the disturbance correction value is determined and stored via one-time learning and the stored disturbance correction value is used for a velocity control of the motor, thereby reducing the burden with respect to storage capacity of data and transient time of the motor for velocity control compared to the case where disturbance correction values obtained via repetition learning are continuously stored.

REFERENCES:
patent: 4501997 (1985-02-01), Muller
patent: 4531079 (1985-07-01), Muller
patent: 4551715 (1985-11-01), Durbin
patent: 4862045 (1989-08-01), Gleim et al.
patent: 4899093 (1990-02-01), Gleim
patent: 5003239 (1991-03-01), Matthews et al.
patent: 5552682 (1996-09-01), Ushikoshi

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