Title:
FREQUENCY CONTROL CIRCUIT FOR PULSE SIGNAL
Document Type and Number:
Japanese Patent JP3736441
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make an acceleration/deceleration end time point accelerated or decelerated by setting the number of control stages when a frequency control circuit is used for motor rotation control to approach an acceleration/ deceleration end time point in the case of an ideal continuous control when the number of control stages is not set.
SOLUTION: The frequency control circuit for a pulse signal includes such operation as to stepwise increase a frequency through a preset number of control stages from a first frequency toward a second frequency higher than the first frequency. The circuit previously adds a correction value 1/2Δf (Δf being a change in a preset frequency) to the first frequency as a pre-process, sequentially adds subsequent changes Δf in the frequency to it, and then outputs it.
Inventors:
Yoichi Tanaka
Satoshi Hyodo
Satoshi Hyodo
Application Number:
JP2001364423A
Publication Date:
January 18, 2006
Filing Date:
November 29, 2001
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
H02P8/14; H03K23/64; (IPC1-7): H03K23/64; H02P8/14
Domestic Patent References:
| JP10215167A | ||||
| JP58163298A | ||||
| JP2000069776A | ||||
| JP2001127618A | ||||
| JP64012617A | ||||
| JP58172709A |
Attorney, Agent or Firm:
Junji Ando
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