CN102223118A - Rotation speed control loop of motor - Google Patents
Rotation speed control loop of motor Download PDFInfo
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- CN102223118A CN102223118A CN2010101498622A CN201010149862A CN102223118A CN 102223118 A CN102223118 A CN 102223118A CN 2010101498622 A CN2010101498622 A CN 2010101498622A CN 201010149862 A CN201010149862 A CN 201010149862A CN 102223118 A CN102223118 A CN 102223118A
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Abstract
The invention discloses a rotation speed control loop of a motor, comprising a rotation speed monitoring module, a voltage converter and a driving circuit. The rotation speed monitoring module is used for receiving a rotation speed instruction, detecting the rotation speed instruction, generating a practical rotation speed signal, generating a driving control signal according to the practical rotation speed signal, converting the rotation speed instruction into a rotation speed reference waveform, calculating phase positions of the rotation speed reference waveform and the practical rotation speed signal so as to obtain a phase difference signal, and generating a power supply adjustment signal according to the phase difference signal. The voltage converter is used for receiving the power supply adjustment signal and forming a direct-current adjustment and control voltage. The driving circuit is provided with a plurality of bridge arms. The driving circuit is used for receiving the direct-current adjustment and control voltage and inputting the direct-current adjustment and control voltage to the plurality of bridge arms. The plurality of bridge arms are used for receiving the driving control signal and are connected to a motor coil through a plurality of serial points.
Description
Technical field
The present invention is relevant for a kind of rotating speed control loop that is used for motor, particularly a kind of rotating speed control loop with phase tracking unit of phase place comparing function.
Background technology
Please refer to shown in Figure 1ly, the existing rotating speed control loop 9 that is used to control a motor is connected in several motor coils 8 of this motor, and this rotating speed control loop 9 comprises a running control unit 91 and an one drive circuit 92.
In detail, this running control unit 91 has a command input end 911, and for the rotating speed order that receives this rotating speed control loop 9 of input, and this rotating speed order can be the magnitude of voltage corresponding to the rotating speed of target of this motor; This running control unit 91 has several signal output parts 912 in addition and is connected to this drive circuit 92, to control these motor coils 8 by this drive circuit 92; In addition, this running control unit 91 has more a rotating speed detecting element 913, and this rotating speed detecting element 913 can be a hall sensing element (Hall sensor) and is provided with and approaches the rotor 7 of this motor, so that predict the running speed of this motor.This drive circuit 92 is preferably a full bridge circuit framework, this full bridge circuit framework comprises several electronic switchs 921, with to constituting several brachium pontis by several motor coils 8, wherein respectively this electronic switch 921 all has a control port for these signal output part 912 connections, respectively this brachium pontis constitutes by two electronic switchs 921 of serial connection, forming a string contact, and this serial connection point is connected to this motor coil 8.
By above-mentioned existing rotating speed control loop 9, this running control unit 91 can receive this rotating speed order by this command input end 911, and produce one group of pulse-width modulation (pulsewidth modulation according to this rotating speed order, PWM) control signal is delivered to this drive circuit 92, controlling the respectively conducting state of this electronic switch 921 of this drive circuit 92 respectively, so by control respectively the electric current in this motor coil 8 activate this motor and turn round according to this rotating speed order.
Yet, above-mentioned existing rotating speed control loop 9 existing shortcomings are: though this rotating speed control loop 9 utilizes this rotating speed detecting element 913 that velocity information is fed back to this running control unit 91, but it is not accurately controlled at the running speed of this motor, cause often having the error more than 5% between the actual speed of the pairing rotating speed of this rotating speed order and this motor.For these reasons, be necessary further to improve above-mentioned existing rotating speed control loop.
Summary of the invention
The object of the invention provides a kind of rotating speed control loop of motor, and this rotating speed control loop has the actual speed of effective reduction motor and the error between the rotating speed order, reaches the purpose that improves control efficiency and accurately control this motor rotary speed.
Another purpose of the present invention provides a kind of rotating speed control loop of motor, and it effectively with operand uniform distribution to phase tracking unit and a running control unit, reaches the purpose of high controllable rotating speed of increase.
Technological means of the present invention comprises: a kind of rotating speed control loop of motor comprises: a monitor speed module, an electric pressure converter and one drive circuit.This monitor speed module is for receiving a rotating speed order and detecting the rotating speed of this motor and produce an actual speed signal, and produce a drive control signal with this actual speed signal, this monitor speed module is a rotating speed reference waveform with this rotating speed command conversion, calculate the phase difference of this rotating speed reference waveform and this actual speed signal and obtain a phase signal, and produce a power supply according to this phase signal and adjust signal, and this monitor speed module has a drive signal output and a power supply signal output, this drive signal output is for this drive control signal of output, and this power supply signal output is then adjusted signal for output one power supply.This electric pressure converter has a power supply signal input and a direct current voltage output end, this power supply signal input is connected to the power supply signal output of this monitor speed module, and this electric pressure converter is adjusted the direct current power of this dc voltage output end of signal controlling to form direct current regulation and control voltage according to this power supply.This drive circuit has a direct current voltage input end and several brachium pontis, this dc voltage input end connects the dc voltage output end of this electric pressure converter, for receiving this direct current regulation and control voltage, these several brachium pontis are connected in parallel between this dc voltage input end and the earth point, these several brachium pontis connect the drive signal output of this monitor speed module for this drive control signal of reception, and respectively this brachium pontis all has a string contact for connecting this motor coil.
Beneficial effect of the present invention is: rotating speed control loop of the present invention not only can effectively reduce the actual speed of this motor and the error between this rotating speed order, and more can further simplify circuit complexity by the mode of phase bit comparison.In addition, because present embodiment calculates this phase signal with this phase tracking unit and power supply is adjusted signal, and calculate this drive control signal with this running control unit, so can be effectively the operand of this monitor speed module be dispensed to this phase tracking unit and running control unit more uniformly, so also can increase the highest controllable rotating speed of rotating speed control loop of the present invention relatively because of the upper limit that improves total computing.
Description of drawings
Fig. 1: the circuit framework figure of existing rotating speed control loop.
Fig. 2: the system schematic of the rotating speed control loop of first embodiment of the invention.
Fig. 3: the circuit framework figure of the rotating speed control loop of first embodiment of the invention.
Fig. 4: the circuit framework figure of the rotating speed control loop of second embodiment of the invention.
Fig. 5: the system schematic of the rotating speed control loop of third embodiment of the invention.
Fig. 6: the circuit framework figure of the rotating speed control loop of third embodiment of the invention.
The main element symbol description:
1 monitor speed module, 1 ' monitor speed module, 11 phase tracking unit
11 ' phase tracking unit 11 " phase tracking unit 111 command input ends
111c direct current input port, 111b direct voltage input port, 111a waveform input port
112 rotating speed inputs, 113 phase difference outputs, 114 waveform outputs
115 power supply signal outputs, 12 running control units, 12 ' running control unit
120 waveform inputs, 121 phase difference inputs, 122 rotating speed detecting elements
123 power supply signal outputs, 124 drive signal outputs, 125 rotating speed outputs
2 electric pressure converters, 21 electronic switch set, 22 ripple filtering electric capacity
23 power supply signal inputs, 24 feeder ears, 25 filtering ends
26 dc voltage output ends, 3 drive circuits, 31 brachium pontis
312 times bridge switch of bridge switch, 32 driving electric outputs on 311
33 driving signal input, 34 dc voltage input ends, 7 rotors
8 motor coil V direct voltage sources, 9 rotating speed control loops
91 running control units, 911 command input ends, 912 signal output parts
913 rotating speed detecting elements, 92 drive circuits, 921 electronic switchs
Embodiment
For the above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and conjunction with figs. are described in detail below:
Please refer to shown in Fig. 2 and 3, it illustrates the system schematic and the circuit diagram of first embodiment of the invention.As shown in Figure 2, the rotating speed control loop of first embodiment of the invention comprises a monitor speed module 1, an electric pressure converter 2 and one drive circuit 3, and rotating speed control loop of the present invention is coupled to several motor coils 8 of a motor, with the operating condition of controlling this motor and the rotating speed of rotor 7 thereof.This monitor speed module 1 is for receiving a rotating speed order, actual speed information according to this rotating speed order and this motor produces a phase signal, produce power supply adjustment signal according to this phase signal and transfer to this electric pressure converter 2, and detect the actual speed of this motor and produce an actual speed signal, and transfer to this drive circuit 3 should the actual speed signal producing one group of drive control signal; This electric pressure converter 2 receives this power supply and adjusts signal and produce direct current regulation and control voltage according to this, and this electric pressure converter 2 is regulated and control voltage transmission to this drive circuit 3 with this direct current; This drive circuit 3 receives these drive control signal and this direct current regulation and control voltage, and produces electric current according to this by this motor coil 8 respectively.
Shown in Fig. 2 and 3, this monitor speed module 1 comprises a phase tracking unit 11 and a running control unit 12, and this phase tracking unit 11 and running control unit 12 are preferable by microcontroller (microprocessor control unit, MCU) constitute, but this phase tracking unit 11 also can be only simple and lower-cost IC chip is constituted by function.In the present embodiment, this phase tracking unit 11 constitutes for analog circuit or the integrated circuit (phase-lockloop integrated circuit, PLL IC) with phase-locked function, for example numbers the IC of CD4046 or XR2206; In addition, 12 of this running control units may be selected to be the microcontroller of numbering PIC16F1827.In detail, this phase tracking unit 11 is for receiving this rotating speed order, and the actual speed information according to this rotating speed order and this motor produces this phase signal, and be a rotating speed reference waveform with this rotating speed command conversion, again this phase signal and rotating speed reference waveform are transferred to this running control unit 12.This phase tracking unit 11 comprises a command input end 111, a rotating speed input 112, a phase difference output 113 and a waveform output 114.This command input end 111 is for receiving this rotating speed order; This rotating speed input 112 is electrically connected with this running control unit 12, to receive this actual speed signal; This phase difference output 113 and waveform output 114 also are connected to this running control unit 12, so that this phase tracking unit 11 transfers to this running control unit 12 with this phase signal and rotating speed reference waveform.Wherein, this rotating speed order can be a direct current voltage commands, this phase tracking unit 11 is this rotating speed reference waveform with this direct voltage command conversion then, and relatively the phase place of this rotating speed reference waveform and this actual speed signal and then obtains this phase signal calculating its phase difference.Whereby, by the phase place comparisons that this phase tracking unit 11 is carried out, can make rotating speed control loop of the present invention have the high rotational speed control accuracy.
This electric pressure converter 2 is preferable to be made of an electronic switch set 21 and a filter capacitor 22, and this electric pressure converter 2 comprises a power supply signal input 23, a feeder ear 24, a filtering end 25 and a direct current voltage output end 26 in addition.In detail, this electronic switch set 21 has a control port, an input port, discharges and recharges port and an output port to constitute this power supply signal input 23, feeder ear 24, filtering end 25 and dc voltage output end 26 respectively; This filter capacitor 22 is connected between this filtering end 25 and the earth point; This power supply signal input 23 connects this power supply signal output 123 and adjusts signal to receive this power supply; This feeder ear 24 is connected to a direct current voltage source V; This dc voltage output end 26 then is connected to this drive circuit 3.Whereby, this electronic switch set 21 is adjusted signal deciding according to this power supply and whether the electric power of this direct voltage source V is sent to this dc voltage output end 26 by this feeder ear 24, and this filter capacitor 22 then carries out filtering by institute's control signals transmitted in 25 pairs of these electronic switch set of this filtering end 21.Therefore, can be by this direct current regulation and control voltage of these dc voltage output end 26 outputs.
This drive circuit 3 has several brachium pontis 31, respectively this brachium pontis 31 all have mutual serial connection one on bridge switch 311 and bridge switch 312 once, and the last bridge switch 311 of these several brachium pontis 31 reaches the driving electric output 32 of this drive circuit 3 of the formation of the serial connection point between the bridge switch 312 down, and this driving electric output 32 then is connected to this motor coil 8.Wherein, bridge switch 312 all had a control port under respectively upward bridge switch 311 reached, and these several control port is connected to this drive signal output 124 to receive this group drive control signal by a driving signal input 33.In addition, this drive circuit 3 has more a direct current voltage input end 34, and this dc voltage input end 34 is connected with this dc voltage output end 26, so that receive this direct current regulation and control voltage.Wherein, these several brachium pontis 31 are connected in parallel and constitute a circuit in parallel, and an end points in parallel of this parallel circuits connects this dc voltage input end 34, and another end points in parallel of this parallel circuits is coupled to earth point.
Referring again to shown in Figure 3, when the rotating speed control loop of first embodiment of the invention operates, the rotating speed order and the actual speed signal that are received by this command input end 111 and rotating speed input 112, this phase tracking unit 11 is this rotating speed reference waveform and actual speed signal and this phase signal of calculating acquisition relatively, and by this phase difference output 113 and phase difference input 121 this phase signal is delivered to this running control unit 12, and by this waveform output 114 and waveform input 120 this rotating speed reference waveform is delivered to this running control unit 12 in addition.
Continue it, this running control unit 12 produces this power supply according to this phase signal and adjusts signal, and produces this drive control signal according to this rotating speed detecting element 122 and rotating speed output 125 measured motor actual speed.In detail, when utilizing rotating speed control loop of the present invention to start this motor when turning round, the frequency that this running control unit 12 at first calculates this rotating speed reference waveform is with as a reference frequency, and carries out a setting up procedure: adjust signal with the corresponding pwm signal that produces of this reference frequency as this power supply.Subsequently, when this motor entry into service and this rotating speed detecting element 122 records the rotating speed of this rotor 7 and when producing this actual speed signal, this running control unit 12 calculates the frequency of these actual speed signals and frequency difference value of this reference frequency.Whereby, if this frequency difference value is outside a phase difference fine setting scope, then this running control unit 12 carries out a rotating speed coarse steps: increase the duty ratio (duty ratio) that this power supply is adjusted signal during less than this reference frequency in the frequency of this actual speed signal, and reduce the duty ratio that this power supply is adjusted signal during greater than this reference frequency in the frequency of this actual speed signal.Otherwise if this frequency difference value drops in this phase difference fine setting scope, then this running control unit 12 carries out a rotating speed trim step: when the phase place of this rotating speed reference waveform of phase lag of this actual speed signal, promptly increase the duty ratio of this power supply adjustment signal; And when the phase place of leading this rotating speed reference waveform of the phase place of this actual speed signal, promptly reduce the duty ratio that this power supply is adjusted signal.From the above, utilize above-mentioned controlling mechanism, can improve this direct current regulation and control voltage, and then increase the rotating speed of this motor by the duty ratio that increases this power supply adjustment signal, or reduce this direct current by the duty ratio that reduces this power supply adjustment signal and regulate and control voltage, and then reduce the rotating speed of this motor.Wherein, the visual demand of this phase difference fine setting scope is adjusted, and for example can stipulate 90% to 110% frequency range that is contained for this reference frequency.Control by the syllogic rotating speed that above-mentioned setting up procedure, the thick bar step of rotating speed and rotating speed trim step are constituted, in the time of not only can just turning round in motor startup just, the actual speed that makes this motor is rapidly near the rotating speed of this rotating speed order, and can when rotating speed is close, utilize this phase signal and rotating speed trim step accurately to adjust the running speed of this motor, and then reach the purpose of improving rotating speed control efficiency and accuracy.
In addition, this running control unit 12 is adjusted the means of this drive control signal according to this motor actual speed, preferablely detect moment actual speed after these motors are subjected to this direct current regulation and control driven by this rotating speed detecting element 122, again by the frequency of these running control unit 12 these drive control signal of change this motor is continued to be maintained at this rotating speed.In other words, if this motor is quickened by this direct current regulation and control voltage, then the frequency of this drive control signal increases; And if this motor is slowed down by this direct current regulation and control voltage, then the frequency of this drive control signal reduces.Yet, when this drive control signal is made of pwm signal, then also can when this motor is quickened by this direct current regulation and control voltage, increase the duty ratio of this drive control signal, and when this motor is slowed down by this direct current regulation and control voltage, reduce the duty ratio of this drive control signal.In addition, this running control unit 12 is delivered to this phase tracking unit 11 by this rotating speed output 125 with this actual speed signal.
Subsequently, this electric pressure converter 2 receives the power supply adjustment signal that this running control unit 12 is produced by this power supply signal input 23.Because the control port of this electronic switch set 21 forms this power supply signal input 23, so the switching frequency of this electronic switch set 21 is identical with the frequency of this power supply adjustment signal.In addition, carry out filtering and voltage stabilizing by 22 pairs of these voltage source V of this ripple filtering electric capacity through the electric power that this electronic switch set 21 is sent to this dc voltage output end 26, this direct current regulation and control voltage can be adjusted the duty ratio of signal corresponding to this power supply.In detail, as shown in Figure 3, when this power supply adjustment signal is the accurate position of low-voltage, this electronic switch set 21 promptly transmits electric power to this dc voltage output end 26, and this power supply is when adjusting signal and being the accurate position of high voltage, 21 of this electronic switch set stop to transmit electric power to this dc voltage output end 26, are negative correlation (negative correlation) so this direct current regulation and control voltage and this power supply are adjusted the duty ratio of signal.
At last, by this drive control signal control this drive circuit 3 respectively should go up brachium pontis switch 311 and down brachium pontis switch 312 conducting whether, can determine the sense of current in this motor coil 8 respectively; In addition, then can determine the size of the electric current in this motor coil 8 respectively by the direct current regulation and control voltage of this dc voltage input end 34 these drive circuits 3 of input.Therefore can operate this motor turns round according to direction and the speed that institute's desire drives.
In sum, by above-mentioned phase tracking unit 11, rotating speed control loop of the present invention can be by the mode of control of syllogic rotating speed and phase bit comparison, the actual speed that effectively improves this motor is followed the trail of the efficient of this rotating speed order, and reduce error between this actual speed and this rotating speed order, and then can reach the purpose of accurate this motor rotary speed of control simultaneously.
Please refer to shown in Figure 4ly, it illustrates the circuit diagram of the rotating speed control loop of second embodiment of the invention.Rotating speed control loop compared to aforementioned first embodiment, the rotating speed control loop of second embodiment of the invention has identical system architecture, but its situation that is this rotating speed reference waveform at this rotating speed order, replace this monitor speed module 1 with another monitor speed module 1 ', and the difference of the monitor speed module 1 of this monitor speed module 1 ' and first embodiment is that this phase tracking unit 11 ' is not provided with this waveform output 114, and the waveform input 120 of the control unit 12 that should turn round then directly receives this rotating speed order.Whereby, this phase tracking unit 11 ' only need calculate this phase signal, so the IC that can utilize function more to simplify finishes this phase tracking unit 11 ' in the present embodiment, and then reaches the purpose that reduces cost.
Please refer to shown in Fig. 5 and 6, it illustrates the system schematic and the circuit diagram of the rotating speed control loop of third embodiment of the invention.Rotating speed control loop compared to aforementioned first and second embodiment, the rotating speed control loop of third embodiment of the invention is with another monitor speed module 1 " replace this monitor speed module 1 and this monitor speed module 1 " also have a phase tracking unit 11 " and a running control unit 12 '.In detail, compared to the phase tracking unit 11 of first embodiment, this phase tracking unit 11 " be not provided with this phase difference output 113 and this phase tracking unit 11 " be provided with a power supply signal output 115 in addition and be connected to this electric pressure converter 2.In addition, compared to the running control unit 12 of first embodiment, this running control unit 12 ' further omits this phase difference input 121 and power supply signal output 123.In addition, in the present embodiment, can select this phase tracking unit 11 " and the running control unit 12 ' be a microcontroller.
From the above, when the rotating speed control loop of third embodiment of the invention operates, this phase tracking unit 11 " not only relatively this rotating speed reference waveform and actual speed signal and calculate and obtain this phase signal; and calculate by this rotating speed reference waveform and to obtain this reference frequency; directly carry out this setting up procedure, rotating speed coarse steps and rotating speed trim step in regular turn again and calculate and produce this direct current regulation and control voltage, and this direct current regulation and control voltage is delivered to this electric pressure converter 2 by this power supply signal output 115 with this phase signal and this reference frequency.In addition, this phase tracking unit 11 " by this waveform output 114 a rotating speed command signal is delivered to the waveform input 120 of this running control unit 12 '; so that this running control unit 12 ' produces this drive control signal and is sent to this drive circuit 3 according to this rotating speed command signal, and this running control unit 12 ' only need produce this actual speed signal in addition and deliver to this phase tracking unit 11 ".Wherein, this rotating speed command signal is preferably the pwm signal corresponding to this direct current regulation and control voltage, so that directly adjust this drive control signal with the duty ratio of this rotating speed command signal.
In addition, as shown in Figure 6, this phase tracking unit 11 " command input end 111 can comprise the wherein at least a of waveform input port 111a, direct current voltage input port 111b and direct current electric current input port 111c, this rotating speed order then can be a pwm signal order, a reference waveform order, a direct current voltage commands or a direct current current order.Wherein, this pwm signal order or reference waveform order are sent into this phase tracking unit 11 by this waveform input port 111a "; This direct voltage order is sent into this phase tracking unit 11 by this direct voltage input port 111b "; This direct current order is then sent into this phase tracking unit 11 by this direct current input port 111c ".In detail, by above-mentioned waveform input port 111a, direct voltage input port 111b and direct current input port 111c, the user can select with any of pwm signal, reference waveform, direct voltage and direct current as this rotating speed order, and then improves ease of use of the present invention.
Whereby, rotating speed control loop of the present invention not only can effectively reduce the actual speed of this motor and the error between this rotating speed order, and more can further simplify circuit complexity by the mode of phase bit comparison.In addition, because present embodiment is with this phase tracking unit 11 " calculate this phase signal and power supply is adjusted signal; and calculate this drive control signal; so can be effectively with this monitor speed module 1 with this running control unit 12 ' " operand be dispensed to this phase tracking unit 11 more uniformly " and the control unit 12 ' that turns round, so also can increase the highest controllable rotating speed of rotating speed control loop of the present invention relatively because of the upper limit that improves total computing.
Claims (14)
1. the rotating speed control loop of a motor, the motor coil for being connected in a motor is characterized in that comprising:
A monitor speed module, detect the rotating speed of this motor and produce an actual speed signal and a drive control signal, and receive and change a rotating speed order and become a rotating speed reference waveform, and calculate the phase difference of this rotating speed reference waveform and this actual speed signal and obtain a phase signal, and produce a power supply according to this phase signal and adjust signal;
An electric pressure converter connects this monitor speed module and receives this power supply and adjusts signal, and forms direct current regulation and control voltage according to this power supply adjustment signal; And
A drive circuit, has one in order to receive dc voltage input end, a driving signal input and a driving electric output of this direct current regulation and control voltage in order to receive this drive control signal, this dc voltage input end connects this electric pressure converter, this driving signal input connects this monitor speed module, and this driving electric output connects this motor coil.
2. according to the rotating speed control loop of the described motor of claim 1, it is characterized in that, this monitor speed module comprises a phase tracking unit and a running control unit, this phase tracking unit receives this rotating speed order and the actual speed signal produces this phase signal with computing, this running control unit detects the rotating speed of this motor and produces this actual speed signal, union produces this drive control signal, and this running control unit receives this phase signal union and produces this power supply and adjust signal.
3. according to the rotating speed control loop of the described motor of claim 2, it is characterized in that it is pulse-width signal that the power supply that this running control unit computing produces is adjusted signal.
4. according to the rotating speed control loop of the described motor of claim 1, it is characterized in that, this monitor speed module comprises a running control unit and a phase tracking unit, this running control unit detects the rotating speed of this motor and produces this actual speed signal, union produces this drive control signal, and this phase tracking unit receives this rotating speed order and the actual speed signal produces this power supply adjustment signal with computing.
5. according to the rotating speed control loop of the described motor of claim 4, it is characterized in that it is pulse-width signal that the power supply that this phase tracking unitary operation produces is adjusted signal.
6. according to the rotating speed control loop of claim 3 or 5 described motors, it is characterized in that, this electric pressure converter comprises an electronic switch set, this electronic switch set has one in order to the control port that receives this power supply adjustment signal, an output port and the input port in order to export this direct current regulation and control voltage, this control port connects this monitor speed module, this output port connects this drive circuit, and this input port is connected to a direct current voltage source.
7. according to the rotating speed control loop of the described motor of claim 6, it is characterized in that this electronic switch set comprises one in addition and discharges and recharges the port and be connected in series to earth point via a filter capacitor.
8. according to the rotating speed control loop of the described motor of claim 1, it is characterized in that, this drive circuit comprises several brachium pontis, these several brachium pontis are connected in parallel to this dc voltage input end, these several brachium pontis connect this driving signal input and receive this drive control signal, and respectively this brachium pontis all has this driving electric output of serial connection point connection.
9. according to the rotating speed control loop of the described motor of claim 2, it is characterized in that this phase tracking unit is this rotating speed reference waveform with this rotating speed command conversion, and be sent to this running control unit.
10. according to the rotating speed control loop of the described motor of claim 2, it is characterized in that this running control unit receives this rotating speed order.
11. the rotating speed control loop according to the described motor of claim 2 is characterized in that, this phase tracking unit is analog circuit or the integrated circuit with phase-locked function.
12. the rotating speed control loop according to the described motor of claim 4 is characterized in that, this phase tracking unit is a microcontroller.
13. the rotating speed control loop according to claim 2 or 4 described motors is characterized in that, this running control unit is a microcontroller.
14. rotating speed control loop according to claim 2 or 4 described motors, it is characterized in that, this phase tracking unit has a command input end and receives this rotating speed order, and this command input end is a waveform input port, a direct voltage input port or a direct current input port.
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| CN2010101498622A CN102223118A (en) | 2010-04-19 | 2010-04-19 | Rotation speed control loop of motor |
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| CN2010101498622A CN102223118A (en) | 2010-04-19 | 2010-04-19 | Rotation speed control loop of motor |
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| CN102931899A (en) * | 2012-10-24 | 2013-02-13 | 华东光电集成器件研究所 | Motor speed control circuit |
| CN105305891A (en) * | 2014-05-30 | 2016-02-03 | 罗姆股份有限公司 | Motor Driving Device |
| CN107404279A (en) * | 2016-05-19 | 2017-11-28 | 佛山市建准电子有限公司 | Motor and rotating speed control method thereof |
| CN109566521A (en) * | 2017-09-18 | 2019-04-05 | 大青节能科技公司 | The waterwheel aerator of built-in wheel hub electric motor |
| CN111064398A (en) * | 2018-10-15 | 2020-04-24 | 广东威灵电机制造有限公司 | Motor operation control method, motor operation control system, clothes treatment device and readable storage medium |
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| CN109566521A (en) * | 2017-09-18 | 2019-04-05 | 大青节能科技公司 | The waterwheel aerator of built-in wheel hub electric motor |
| CN111064398A (en) * | 2018-10-15 | 2020-04-24 | 广东威灵电机制造有限公司 | Motor operation control method, motor operation control system, clothes treatment device and readable storage medium |
| CN111058224A (en) * | 2018-10-15 | 2020-04-24 | 广东威灵电机制造有限公司 | Motor operation control method and system, drum washing machine and storage medium |
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Application publication date: 20111019 |