JPS5497722A - Rotor position detector for commutatorless motor - Google Patents
Rotor position detector for commutatorless motorInfo
- Publication number
- JPS5497722A JPS5497722A JP340278A JP340278A JPS5497722A JP S5497722 A JPS5497722 A JP S5497722A JP 340278 A JP340278 A JP 340278A JP 340278 A JP340278 A JP 340278A JP S5497722 A JPS5497722 A JP S5497722A
- Authority
- JP
- Japan
- Prior art keywords
- low
- latch circuit
- armature
- terminal
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To eliminate the phase delay caused by the comparator having hystersis characteristic, by employing a latch circuit for obtaining the position detecting signal from the terminal voltage of armature. CONSTITUTION:Armature terminal voltages VA-VC and armature neutral voltage VN are passed through low pass filter 3 and comparator 9 to form comparsion signals A1-C1 which is provided to latch circuit 10. Comparison signals Al and Bl are provided respectively to set terminal S1 and reset terminal R1 of first latch circuit 11. At predetermined time limit B1 is high while Al is low thereby the output signal A from first latch circuit 11 is low and such state continues for a while after the comparison signal B1 switched to low. When the comparison signal A1 switched from low to high, the output signal A also switches to high.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP340278A JPS5497722A (en) | 1978-01-18 | 1978-01-18 | Rotor position detector for commutatorless motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP340278A JPS5497722A (en) | 1978-01-18 | 1978-01-18 | Rotor position detector for commutatorless motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5497722A true JPS5497722A (en) | 1979-08-02 |
Family
ID=11556373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP340278A Pending JPS5497722A (en) | 1978-01-18 | 1978-01-18 | Rotor position detector for commutatorless motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5497722A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4528486A (en) * | 1983-12-29 | 1985-07-09 | The Boeing Company | Controller for a brushless DC motor |
US4531079A (en) * | 1982-05-27 | 1985-07-23 | Papst-Motoren Gmbh & Co. Kg | Brushless DC drive motor for signal recording means |
-
1978
- 1978-01-18 JP JP340278A patent/JPS5497722A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4531079A (en) * | 1982-05-27 | 1985-07-23 | Papst-Motoren Gmbh & Co. Kg | Brushless DC drive motor for signal recording means |
US4528486A (en) * | 1983-12-29 | 1985-07-09 | The Boeing Company | Controller for a brushless DC motor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5497722A (en) | Rotor position detector for commutatorless motor | |
EP0055203A3 (en) | Selective commutation circuit for an inverter | |
JPS5558402A (en) | Position detector | |
JPS5243926A (en) | Velocity control device of brushless motor | |
CA1019792A (en) | Test trip means for circuit breaker | |
JPS54109353A (en) | Sample holding circuit | |
JPS54119212A (en) | Rotating phase detecting circuit | |
JPS5385468A (en) | Polyphase power detector | |
JPS55163465A (en) | Aging tester | |
JPS5532134A (en) | Control system for power converter | |
JPS5272412A (en) | Control system for commutatorless motor | |
JPS5432960A (en) | Delay relay | |
JPS53140930A (en) | Signal hold circuit | |
JPS5279192A (en) | Sequence controller which enables fault detection of output element | |
JPS5292324A (en) | Three phase inverter | |
JPS5553926A (en) | Step-out detecting circuit | |
JPS52106259A (en) | Voltage-frequency conversion circuit | |
JPS5288744A (en) | Load concentrating control type receiver | |
JPS54114738A (en) | Protective relay | |
JPS5381926A (en) | Inverse time circuit | |
JPS524738A (en) | Color demodulation circuit of secam- system color tv signal | |
JPS5493414A (en) | Failure detector for chopper commutation | |
JPS5548684A (en) | Watch | |
JPS53132720A (en) | Synchronous dynamotor starter | |
JPS5326914A (en) | Non-commutator type direct current m otor |