Title:
MOTOR LOCK-DETECTION CIRCUIT AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2013/115091
Kind Code:
A1
Abstract:
This lock-detection circuit is provided with: a CPU (204); switches (220 to 224) that are controlled by control signals (FAN1 to FANn) outputted from the CPU and supply power to motors (210 to 214); gates (240 to 244) that are controlled by the control signals and output inputted motor-state signals (LD1 to LDn) as signals (XLD1 to XLDn); and an element (232) that outputs a signal (LOCK) consisting of the disjunction of the aforementioned output signals (XLD1 to XLDn). If said signal (LOCK) indicates that a lock has occurred, the CPU determines the whether a lock has occurred for each motor by evaluating the level of the signal (LOCK) with just one of the control signals at a high level. This makes it possible to identify the locked motor.
Inventors:
KAI HIROKI
Application Number:
PCT/JP2013/051569
Publication Date:
August 08, 2013
Filing Date:
January 25, 2013
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
H02P5/68
Foreign References:
| JP2005256617A | 2005-09-22 | |||
| JPH07298666A | 1995-11-10 | |||
| JPH03269710A | 1991-12-02 | |||
| JPH0325267A | 1991-02-04 | |||
| JP2009109561A | 2009-05-21 |
Attorney, Agent or Firm:
SHIMIZU, SATOSHI (JP)
Spring water 敏 (JP)
Spring water 敏 (JP)
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Claims: