CN203434900U - Rotor-position feedback circuit of brushless motor - Google Patents
Rotor-position feedback circuit of brushless motor Download PDFInfo
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- CN203434900U CN203434900U CN201320521586.7U CN201320521586U CN203434900U CN 203434900 U CN203434900 U CN 203434900U CN 201320521586 U CN201320521586 U CN 201320521586U CN 203434900 U CN203434900 U CN 203434900U
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Abstract
The utility model discloses a rotor-position feedback circuit of a brushless motor. The key points of the technical scheme of the rotor-position feedback circuit of the brushless motor are that the circuit includes a rotational transformer. Square-wave signals of a one-chip microcomputer are output to a filtering circuit via a node P1. The filtering circuit converts the square-wave signals of the one-chip microcomputer into sine-wave signals which are output to a power amplifying circuit via a node P2. Output nodes P3 and P4 of the power amplifying circuit are connected with one end and the other end of an input end of the rotational transformer respectively. An output signal end of the rotational transformer is connected with input nodes P5 and P6 of a signal conditioning circuit. The other output end of the rotational transformer is connected with input nodes P8 and P9 of the signal conditioning circuit. Output nodes P7 and P8 of the signal conditioning circuit are connected with an A/D interface of the one-chip microcomputer.
Description
Technical field:
The utility model relates to a kind of control circuit, particularly a kind of position of rotor of brushless motor feedback circuit.
Background technology:
Two kinds of the main Hall element of position of rotor of brushless motor feedback element and resolvers, the latter compare with the former have that precision is high, the advantage such as high-low temperature resistant and anti-electromagnetic interference, yet this resolver need coordinate corresponding decoding chip, and the price of decoding chip is very high, the cost of this brushless motor controller brings very large pressure.
Summary of the invention:
The utility model object be propose that a kind of precision is high, resistant of high or low temperature and anti-electromagnetic interference performance is good and cost is low position of rotor of brushless motor feedback circuit.
The technical scheme that realizes the utility model object is, position of rotor of brushless motor feedback circuit, comprise resolver, it is characterized in that: the square-wave signal of single-chip microcomputer exports filter circuit to through node P1, this filter circuit is converted into sine wave signal by the square-wave signal of single-chip microcomputer, through node, P2 exports power amplification circuit to, the output node P3 of this power amplification circuit and P4 are connected with the other end with one end of the input of resolver respectively, resolver one output signal end is connected with P6 with the input node P5 of signal conditioning circuit, another output of resolver is connected with P9 with the input node P8 of signal conditioning circuit, the output node P7 of this signal conditioning circuit is connected with the A/D mouth of single-chip microcomputer with P8,
Described filter circuit is, filter circuit comprises resistance R 1, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, integrated transporting discharging U1A, the 4th pin of integrated transporting discharging U1A meets power supply VCC, the voltage range of this power supply is 9Vdc to 16Vdc, the 11st pin ground connection of integrated transporting discharging U1A, input node P1 contact resistance R1 one end, resistance R 1 other end contact resistance R2, resistance R 2 other ends connect the 3rd pin of integrated transporting discharging U1A, between resistance R 1 and resistance R 2, be connected with capacitor C 1 one end, capacitor C 1 other end ground connection, between resistance R 2 and integrated transporting discharging U1A, be connected capacitor C 2 one end, capacitor C 2 other end ground connection, resistance R 3 two ends connect respectively the 2nd pin and the 1st pin of integrated transporting discharging U1A, the 1st pin of integrated transporting discharging U1A meets output node P2,
The square-wave signal of single-chip microcomputer output 10kHz, through node, P1 exports filter circuit to, and filter circuit is converted into the square-wave signal of 10kHz the sine wave signal of 10kHz, through node P2, exports;
Described power amplification circuit is, power amplification circuit comprises resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15, resistance R 16, resistance R 17, resistance R 18, resistance R 19, resistance R 20, resistance R 21, resistance R 22, resistance R 23, capacitor C 3, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 8, integrated transporting discharging U1B, integrated transporting discharging U1C, integrated transporting discharging U1D, triode Q1, triode Q2, triode Q3, input node P2 connects capacitor C 3 one end, capacitor C 3 other end contact resistance R4 one end, resistance R 4 other ends connect integrated transporting discharging U1D the 13rd pin, resistance R 5 two ends connect respectively reference voltage source VCC/2 and integrated transporting discharging U1D the 12nd pin, resistance R 8 one end connect power supply VCC, resistance R 8 other ends connect diode D1 anode, diode D1 negative electrode connects diode D2 anode, diode D2 negative electrode contact resistance R9 one end, resistance R 9 other end ground connection, diode D1 negative electrode connects integrated transporting discharging UID the 14th pin, diode D1 anodic bonding triode Q1 base stage, diode D2 negative electrode connecting triode Q2 base stage, triode Q1 collector electrode is connected with power supply VCC, triode Q1 emitter is connected with resistance R 10 one end, resistance R 10 other ends are connected with resistance R 11, resistance R 11 other ends are connected with triode Q2 emitter, triode Q2 grounded collector, resistance R 6 is in parallel with capacitor C 4, one end connects integrated transporting discharging U1D the 13rd pin, between other end contact resistance R10 and resistance R 11, contact resistance R12 one end between resistance R 10 and resistance R 11, resistance R 12 other end contact resistance R7 one end, resistance R 7 other ends connect integrated transporting discharging U1D the 12nd pin, between resistance R 12 and resistance R 7, be connected output node P3, capacitor C 5 two ends are connected with ground with output node P3 respectively, integrated transporting discharging U1B the 5th pin is connected with 2.5V power supply, input node P2 contact resistance R13 one end, resistance R 13 other ends connect integrated transporting discharging U1B the 6th pin, resistance R 14 two ends are connected with integrated transporting discharging U1B the 7th pin with integrated transporting discharging U1B the 6th pin respectively, integrated transporting discharging U1B the 7th pin is connected with capacitor C 6 one end, capacitor C 6 other end contact resistance R16 one end, resistance R 16 other ends connect integrated transporting discharging U1C the 9th pin, resistance R 15 two ends connect respectively reference voltage source VCC/2 and integrated transporting discharging U1C the 10th pin, resistance R 19 one end connect power supply VCC, resistance R 19 other ends connect diode D3 anode, diode D3 negative electrode connects diode D4 anode, diode D4 negative electrode contact resistance R20 one end, resistance R 20 other end ground connection, diode D3 negative electrode connects integrated transporting discharging UIC the 8th pin, diode D3 anodic bonding triode Q3 base stage, diode D4 negative electrode connecting triode Q4 base stage, triode Q3 collector electrode is connected with power supply VCC, triode Q3 emitter is connected with resistance R 21 one end, resistance R 21 other ends are connected with resistance R 22, resistance R 22 other ends are connected with triode Q4 emitter, triode Q4 grounded collector, resistance R 18 is in parallel with capacitor C 7, one end connects integrated transporting discharging U1C the 9th pin, between other end contact resistance R21 and resistance R 22, contact resistance R23 one end between resistance R 21 and resistance R 22, resistance R 23 other end contact resistance R17 one end, resistance R 17 other ends connect integrated transporting discharging U1C the 10th pin, between resistance R 23 and resistance R 17, be connected output node P4, capacitor C 8 two ends are connected with ground with output node P4 respectively, output node P3 is connected with resolver input one end, output node P4 is connected with the resolver input other end,
Described signal conditioning circuit is, signal conditioning circuit comprises capacitor C 9, capacitor C 10, capacitor C 11, capacitor C 12, capacitor C 13, capacitor C 14, resistance R 24, resistance R 25, resistance R 26, resistance R 27, resistance R 28, resistance R 29, diode ZDA1, ZDA2, integrated transporting discharging U9C, integrated transporting discharging U9D, integrated transporting discharging U9C the 4th pin is connected with power supply VCC, integrated transporting discharging U9C the 11st pin is connected with ground, integrated transporting discharging U9D the 4th pin is connected with power supply VCC, integrated transporting discharging U9D the 11st pin is connected with ground, input node P5 is connected a road output signal of rotary transformer with P6, input node P8 is connected another road output signal of rotary transformer with P9, diode ZDA1 the 1st pin connects input node P5, diode ZDA1 the 2nd pin connects input node P6, input node P6 is connected with ground, capacitor C 9 one end are connected with input node P5, capacitor C 9 other ends are connected with resistance R 24 one end, resistance R 24 other ends are connected with integrated transporting discharging U9D the 13rd pin, capacitor C 10 is in parallel with resistance R 25, two ends are connected with integrated transporting discharging U9D the 14th pin with integrated transporting discharging U9D the 13rd pin respectively, resistance R 26 two ends are connected with output node P7 with integrated transporting discharging U9D the 14th pin respectively, capacitor C 11 two ends are connected with ground with output node P7 respectively, diode ZDA2 the 1st pin connects input node P8, diode ZDA2 the 2nd pin connects input node P9, input node P9 is connected with ground, capacitor C 12 one end are connected with input node P8, capacitor C 12 other ends are connected with resistance R 27 one end, resistance R 27 other ends are connected with integrated transporting discharging U9C the 9th pin, capacitor C 13 is in parallel with resistance R 28, two ends are connected with integrated transporting discharging U9C the 8th pin with integrated transporting discharging U9C the 9th pin respectively, resistance R 29 two ends are connected with output node P10 with integrated transporting discharging U9C the 8th pin respectively, capacitor C 14 two ends are connected with ground with output node P10 respectively, output node P7, output node P8 exports Chip Microcomputer A/D mouth to, single-chip microcomputer is according to these two signal resolution motor rotor positions,
The model of described single-chip microcomputer is: MPC5602, the model of described U1A, U1B, U1C, U1D, UPC and UPD is: LM2904.
It is high that the utility model has precision compared with the prior art, high and low temperature resistance and the advantage that anti-electromagnetic interference performance is good and cost is low.
Accompanying drawing explanation:
Fig. 1 is square frame principle schematic diagram of the present utility model; Fig. 2 is filter circuit figure; Fig. 3 is power amplification circuit figure; Fig. 4 is signal conditioning circuit figure.
Embodiment:
In conjunction with above accompanying drawing, the utility model is elaborated, single-chip microcomputer is through controlling filter circuit, power amplifier control resolver, and resolver feeds back to single-chip microcomputer after signal conditioning circuit conditioning.
Described filter circuit is that filter circuit comprises resistance R 1, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, integrated transporting discharging U1A.It is 9Vdc to 16Vdc that the 4th pin of integrated transporting discharging U1A connects power supply VCC(voltage range), the 11st pin ground connection of integrated transporting discharging U1A, input node P1(single-chip microcomputer square-wave signal output) contact resistance R1 one end, resistance R 1 other end contact resistance R2, resistance R 2 other ends connect the 3rd pin of integrated transporting discharging U1A, are connected capacitor C 1 other end ground connection between resistance R 1 and resistance R 2 with capacitor C 1 one end, between resistance R 2 and integrated transporting discharging U1A, be connected capacitor C 2 one end, capacitor C 2 other end ground connection.Resistance R 3 two ends connect respectively the 2nd pin and the 1st pin of integrated transporting discharging U1A, and the 1st pin of integrated transporting discharging U1A meets output node P2.
The square-wave signal of single-chip microcomputer output 10kHz, through node, P1 exports filter circuit to, and filter circuit is converted into the square-wave signal of 10kHz the sine wave signal of 10kHz, through node P2, exports.
Described power amplification circuit is that power amplification circuit comprises resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15, resistance R 16, resistance R 17, resistance R 18, resistance R 19, resistance R 20, resistance R 21, resistance R 22, resistance R 23, capacitor C 3, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 8, integrated transporting discharging U1B, integrated transporting discharging U1C, integrated transporting discharging U1D, triode Q1, triode Q2, triode Q3.Input node P2 connects capacitor C 3 one end, capacitor C 3 other end contact resistance R4 one end, and resistance R 4 other ends connect integrated transporting discharging U1D the 13rd pin, and resistance R 5 two ends connect respectively reference voltage source VCC/2 and integrated transporting discharging U1D the 12nd pin.Resistance R 8 one end connect power supply VCC, resistance R 8 other ends connect diode D1 anode, diode D1 negative electrode connects diode D2 anode, diode D2 negative electrode contact resistance R9 one end, resistance R 9 other end ground connection, diode D1 negative electrode connects integrated transporting discharging UID the 14th pin, diode D1 anodic bonding triode Q1 base stage, diode D2 negative electrode connecting triode Q2 base stage, triode Q1 collector electrode is connected with power supply VCC, triode Q1 emitter is connected with resistance R 10 one end, resistance R 10 other ends are connected with resistance R 11, resistance R 11 other ends are connected with triode Q2 emitter, triode Q2 grounded collector, resistance R 6 is in parallel with capacitor C 4, one end connects integrated transporting discharging U1D the 13rd pin, between other end contact resistance R10 and resistance R 11, contact resistance R12 one end between resistance R 10 and resistance R 11, resistance R 12 other end contact resistance R7 one end, resistance R 7 other ends connect integrated transporting discharging U1D the 12nd pin, between resistance R 12 and resistance R 7, be connected output node P3, capacitor C 5 two ends are connected with ground with output node P3 respectively.Integrated transporting discharging U1B the 5th pin is connected with 2.5V power supply, input node P2 contact resistance R13 one end, resistance R 13 other ends connect integrated transporting discharging U1B the 6th pin and connect, resistance R 14 two ends are connected with integrated transporting discharging U1B the 7th pin with integrated transporting discharging U1B the 6th pin respectively, integrated transporting discharging U1B the 7th pin is connected with capacitor C 6 one end, capacitor C 6 other end contact resistance R16 one end, resistance R 16 other ends connect integrated transporting discharging U1C the 9th pin, and resistance R 15 two ends connect respectively reference voltage source VCC/2 and integrated transporting discharging U1C the 10th pin.Resistance R 19 one end connect power supply VCC, resistance R 19 other ends connect diode D3 anode, diode D3 negative electrode connects diode D4 anode, diode D4 negative electrode contact resistance R20 one end, resistance R 20 other end ground connection, diode D3 negative electrode connects integrated transporting discharging UIC the 8th pin, diode D3 anodic bonding triode Q3 base stage, diode D4 negative electrode connecting triode Q4 base stage, triode Q3 collector electrode is connected with power supply VCC, triode Q3 emitter is connected with resistance R 21 one end, resistance R 21 other ends are connected with resistance R 22, resistance R 22 other ends are connected with triode Q4 emitter, triode Q4 grounded collector, resistance R 18 is in parallel with capacitor C 7, one end connects integrated transporting discharging U1C the 9th pin, between other end contact resistance R21 and resistance R 22, contact resistance R23 one end between resistance R 21 and resistance R 22, resistance R 23 other end contact resistance R17 one end, resistance R 17 other ends connect integrated transporting discharging U1C the 10th pin, between resistance R 23 and resistance R 17, be connected output node P4, capacitor C 8 two ends are connected with ground with output node P4 respectively.Output node P3 is connected with resolver input one end, and output node P4 is connected with the resolver input other end.
This circuit is realized the power amplification of sinusoidal signal, to meet the input requirements of resolver.
Described signal conditioning circuit is that signal conditioning circuit comprises capacitor C 9, capacitor C 10, capacitor C 11, capacitor C 12, capacitor C 13, capacitor C 14, resistance R 24, resistance R 25, resistance R 26, resistance R 27, resistance R 28, resistance R 29, diode ZDA1, ZDA2, integrated transporting discharging U9C, integrated transporting discharging U9D.Integrated transporting discharging U9C the 4th pin is connected with power supply VCC, integrated transporting discharging U9C the 11st pin is connected with ground, integrated transporting discharging U9D the 4th pin is connected with power supply VCC, integrated transporting discharging U9D the 11st pin is connected with ground, input node P5 is connected a road output signal of rotary transformer with P6, input node P8 is connected another road output signal of rotary transformer with P9, diode ZDA1 the 1st pin connects input node P5, diode ZDA1 the 2nd pin connects input node P6, input node P6 is connected with ground, capacitor C 9 one end are connected with input node P5, capacitor C 9 other ends are connected with resistance R 24 one end, resistance R 24 other ends are connected with integrated transporting discharging U9D the 13rd pin, capacitor C 10 is in parallel with resistance R 25, two ends are connected with integrated transporting discharging U9D the 14th pin with integrated transporting discharging U9D the 13rd pin respectively, resistance R 26 two ends are connected with output node P7 with integrated transporting discharging U9D the 14th pin respectively, capacitor C 11 two ends are connected with ground with output node P7 respectively, diode ZDA2 the 1st pin connects input node P8, diode ZDA2 the 2nd pin connects input node P9, input node P9 is connected with ground, capacitor C 12 one end are connected with input node P8, capacitor C 12 other ends are connected with resistance R 27 one end, resistance R 27 other ends are connected with integrated transporting discharging U9C the 9th pin, capacitor C 13 is in parallel with resistance R 28, two ends are connected with integrated transporting discharging U9C the 8th pin with integrated transporting discharging U9C the 9th pin respectively, resistance R 29 two ends are connected with output node P10 with integrated transporting discharging U9C the 8th pin respectively, capacitor C 14 two ends are connected with ground with output node P10 respectively.Output node P7, output node P8 export Chip Microcomputer A/D mouth to, and single-chip microcomputer is according to these two signal resolution motor rotor positions,
The model of described single-chip microcomputer is: MPC5602,
The model of described U1A, U1B, U1C, U1D, UPC and UPD is: LM2904.
Claims (1)
1. position of rotor of brushless motor feedback circuit, comprise resolver, it is characterized in that: the square-wave signal of single-chip microcomputer exports filter circuit to through node P1, this filter circuit is converted into sine wave signal by the square-wave signal of single-chip microcomputer, through node, P2 exports power amplification circuit to, the output node P3 of this power amplification circuit and P4 are connected with the other end with one end of the input of resolver respectively, resolver one output signal end is connected with P6 with the input node P5 of signal conditioning circuit, another output of resolver is connected with P9 with the input node P8 of signal conditioning circuit, the output node P7 of this signal conditioning circuit is connected with the A/D mouth of single-chip microcomputer with P8,
Described filter circuit is, filter circuit comprises resistance R 1, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, integrated transporting discharging U1A, the 4th pin of integrated transporting discharging U1A meets power supply VCC, the voltage range of this power supply is 9Vdc to 16Vdc, the 11st pin ground connection of integrated transporting discharging U1A, input node P1 contact resistance R1 one end, resistance R 1 other end contact resistance R2, resistance R 2 other ends connect the 3rd pin of integrated transporting discharging U1A, between resistance R 1 and resistance R 2, be connected with capacitor C 1 one end, capacitor C 1 other end ground connection, between resistance R 2 and integrated transporting discharging U1A, be connected capacitor C 2 one end, capacitor C 2 other end ground connection, resistance R 3 two ends connect respectively the 2nd pin and the 1st pin of integrated transporting discharging U1A, the 1st pin of integrated transporting discharging U1A meets output node P2,
The square-wave signal of single-chip microcomputer output 10kHz, through node, P1 exports filter circuit to, and filter circuit is converted into the square-wave signal of 10kHz the sine wave signal of 10kHz, through node P2, exports;
Described power amplification circuit is, power amplification circuit comprises resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15, resistance R 16, resistance R 17, resistance R 18, resistance R 19, resistance R 20, resistance R 21, resistance R 22, resistance R 23, capacitor C 3, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 8, integrated transporting discharging U1B, integrated transporting discharging U1C, integrated transporting discharging U1D, triode Q1, triode Q2, triode Q3, input node P2 connects capacitor C 3 one end, capacitor C 3 other end contact resistance R4 one end, resistance R 4 other ends connect integrated transporting discharging U1D the 13rd pin, resistance R 5 two ends connect respectively reference voltage source VCC/2 and integrated transporting discharging U1D the 12nd pin, resistance R 8 one end connect power supply VCC, resistance R 8 other ends connect diode D1 anode, diode D1 negative electrode connects diode D2 anode, diode D2 negative electrode contact resistance R9 one end, resistance R 9 other end ground connection, diode D1 negative electrode connects integrated transporting discharging UID the 14th pin, diode D1 anodic bonding triode Q1 base stage, diode D2 negative electrode connecting triode Q2 base stage, triode Q1 collector electrode is connected with power supply VCC, triode Q1 emitter is connected with resistance R 10 one end, resistance R 10 other ends are connected with resistance R 11, resistance R 11 other ends are connected with triode Q2 emitter, triode Q2 grounded collector, resistance R 6 is in parallel with capacitor C 4, one end connects integrated transporting discharging U1D the 13rd pin, between other end contact resistance R10 and resistance R 11, contact resistance R12 one end between resistance R 10 and resistance R 11, resistance R 12 other end contact resistance R7 one end, resistance R 7 other ends connect integrated transporting discharging U1D the 12nd pin, between resistance R 12 and resistance R 7, be connected output node P3, capacitor C 5 two ends are connected with ground with output node P3 respectively, integrated transporting discharging U1B the 5th pin is connected with 2.5V power supply, input node P2 contact resistance R13 one end, resistance R 13 other ends connect integrated transporting discharging U1B the 6th pin, resistance R 14 two ends are connected with integrated transporting discharging U1B the 7th pin with integrated transporting discharging U1B the 6th pin respectively, integrated transporting discharging U1B the 7th pin is connected with capacitor C 6 one end, capacitor C 6 other end contact resistance R16 one end, resistance R 16 other ends connect integrated transporting discharging U1C the 9th pin, resistance R 15 two ends connect respectively reference voltage source VCC/2 and integrated transporting discharging U1C the 10th pin, resistance R 19 one end connect power supply VCC, resistance R 19 other ends connect diode D3 anode, diode D3 negative electrode connects diode D4 anode, diode D4 negative electrode contact resistance R20 one end, resistance R 20 other end ground connection, diode D3 negative electrode connects integrated transporting discharging UIC the 8th pin, diode D3 anodic bonding triode Q3 base stage, diode D4 negative electrode connecting triode Q4 base stage, triode Q3 collector electrode is connected with power supply VCC, triode Q3 emitter is connected with resistance R 21 one end, resistance R 21 other ends are connected with resistance R 22, resistance R 22 other ends are connected with triode Q4 emitter, triode Q4 grounded collector, resistance R 18 is in parallel with capacitor C 7, one end connects integrated transporting discharging U1C the 9th pin, between other end contact resistance R21 and resistance R 22, contact resistance R23 one end between resistance R 21 and resistance R 22, resistance R 23 other end contact resistance R17 one end, resistance R 17 other ends connect integrated transporting discharging U1C the 10th pin, between resistance R 23 and resistance R 17, be connected output node P4, capacitor C 8 two ends are connected with ground with output node P4 respectively, output node P3 is connected with resolver input one end, output node P4 is connected with the resolver input other end,
Described signal conditioning circuit is, signal conditioning circuit comprises capacitor C 9, capacitor C 10, capacitor C 11, capacitor C 12, capacitor C 13, capacitor C 14, resistance R 24, resistance R 25, resistance R 26, resistance R 27, resistance R 28, resistance R 29, diode ZDA1, ZDA2, integrated transporting discharging U9C, integrated transporting discharging U9D, integrated transporting discharging U9C the 4th pin is connected with power supply VCC, integrated transporting discharging U9C the 11st pin is connected with ground, integrated transporting discharging U9D the 4th pin is connected with power supply VCC, integrated transporting discharging U9D the 11st pin is connected with ground, input node P5 is connected a road output signal of rotary transformer with P6, input node P8 is connected another road output signal of rotary transformer with P9, diode ZDA1 the 1st pin connects input node P5, diode ZDA1 the 2nd pin connects input node P6, input node P6 is connected with ground, capacitor C 9 one end are connected with input node P5, capacitor C 9 other ends are connected with resistance R 24 one end, resistance R 24 other ends are connected with integrated transporting discharging U9D the 13rd pin, capacitor C 10 is in parallel with resistance R 25, two ends are connected with integrated transporting discharging U9D the 14th pin with integrated transporting discharging U9D the 13rd pin respectively, resistance R 26 two ends are connected with output node P7 with integrated transporting discharging U9D the 14th pin respectively, capacitor C 11 two ends are connected with ground with output node P7 respectively, diode ZDA2 the 1st pin connects input node P8, diode ZDA2 the 2nd pin connects input node P9, input node P9 is connected with ground, capacitor C 12 one end are connected with input node P8, capacitor C 12 other ends are connected with resistance R 27 one end, resistance R 27 other ends are connected with integrated transporting discharging U9C the 9th pin, capacitor C 13 is in parallel with resistance R 28, two ends are connected with integrated transporting discharging U9C the 8th pin with integrated transporting discharging U9C the 9th pin respectively, resistance R 29 two ends are connected with output node P10 with integrated transporting discharging U9C the 8th pin respectively, capacitor C 14 two ends are connected with ground with output node P10 respectively, output node P7, output node P8 exports Chip Microcomputer A/D mouth to, single-chip microcomputer is according to these two signal resolution motor rotor positions,
The model of described single-chip microcomputer is: MPC5602, the model of described U1A, U1B, U1C, U1D, UPC and UPD is: LM2904.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320521586.7U CN203434900U (en) | 2013-08-26 | 2013-08-26 | Rotor-position feedback circuit of brushless motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320521586.7U CN203434900U (en) | 2013-08-26 | 2013-08-26 | Rotor-position feedback circuit of brushless motor |
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| CN201320521586.7U Expired - Fee Related CN203434900U (en) | 2013-08-26 | 2013-08-26 | Rotor-position feedback circuit of brushless motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506111A (en) * | 2014-12-16 | 2015-04-08 | 广东美的环境电器制造有限公司 | Fan, and oscillation control method and oscillation control device for fan |
| CN109814653A (en) * | 2019-02-13 | 2019-05-28 | 烟台艾睿光电科技有限公司 | A kind of high bias voltage power supply system |
-
2013
- 2013-08-26 CN CN201320521586.7U patent/CN203434900U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506111A (en) * | 2014-12-16 | 2015-04-08 | 广东美的环境电器制造有限公司 | Fan, and oscillation control method and oscillation control device for fan |
| CN109814653A (en) * | 2019-02-13 | 2019-05-28 | 烟台艾睿光电科技有限公司 | A kind of high bias voltage power supply system |
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Granted publication date: 20140212 Termination date: 20210826 |