JPS5497723A - Rotor position detector for commutatorless motor - Google Patents
Rotor position detector for commutatorless motorInfo
- Publication number
- JPS5497723A JPS5497723A JP340478A JP340478A JPS5497723A JP S5497723 A JPS5497723 A JP S5497723A JP 340478 A JP340478 A JP 340478A JP 340478 A JP340478 A JP 340478A JP S5497723 A JPS5497723 A JP S5497723A
- Authority
- JP
- Japan
- Prior art keywords
- detection signals
- positional detection
- type
- positional
- generating circuit
- 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 perform accurate positional detection not associated with phase delay, by using the fact that the multiple pulse isn't generated at the falling section of the positional detecting signal pulse. CONSTITUTION:The positional detection signals VA-VC are provided to low pass filter 5, bypass filter 6, comparator 10, logic 12, three times frequency generating circuit 13 and phase locked loop(PLL) 14. The output signal 17 from the voltage control generating circuit 17 is provided to each D-type flipflop 15-1-15-2 as clock signal while the positional detection signals A-C are provided to D-type input terminals D1-D3 of D-type flipflops 15-1-15-3, and the information of D input is transmitted to the output at the falling time point of the clock signal. Consequently the outputs from D-type flipflops 15-1-15-3 have 60 deg. phase difference against the positional detection signals A-C to provide the positional detection signals A<+>-C<+> for the thyristor in the plus sid arm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP340478A JPS5497723A (en) | 1978-01-18 | 1978-01-18 | Rotor position detector for commutatorless motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP340478A JPS5497723A (en) | 1978-01-18 | 1978-01-18 | Rotor position detector for commutatorless motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5497723A true JPS5497723A (en) | 1979-08-02 |
Family
ID=11556433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP340478A Pending JPS5497723A (en) | 1978-01-18 | 1978-01-18 | Rotor position detector for commutatorless motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5497723A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985001371A1 (en) * | 1983-09-22 | 1985-03-28 | Canon Kabushiki Kaisha | File system |
JPS62285686A (en) * | 1986-05-30 | 1987-12-11 | Sony Corp | Brushless motor |
US4978895A (en) * | 1988-10-17 | 1990-12-18 | Schwarz Marcos G | Electronic control circuit for brushless direct current motor |
-
1978
- 1978-01-18 JP JP340478A patent/JPS5497723A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985001371A1 (en) * | 1983-09-22 | 1985-03-28 | Canon Kabushiki Kaisha | File system |
US4996664A (en) * | 1983-09-22 | 1991-02-26 | Canon Kabushiki Kaisha | File system |
JPS62285686A (en) * | 1986-05-30 | 1987-12-11 | Sony Corp | Brushless motor |
US4978895A (en) * | 1988-10-17 | 1990-12-18 | Schwarz Marcos G | Electronic control circuit for brushless direct current motor |
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