CN1531186A - Motor driving controlling apparatus - Google Patents
Motor driving controlling apparatus Download PDFInfo
- Publication number
- CN1531186A CN1531186A CNA2004100070725A CN200410007072A CN1531186A CN 1531186 A CN1531186 A CN 1531186A CN A2004100070725 A CNA2004100070725 A CN A2004100070725A CN 200410007072 A CN200410007072 A CN 200410007072A CN 1531186 A CN1531186 A CN 1531186A
- Authority
- CN
- China
- Prior art keywords
- voltage
- waveform
- motor driven
- motor
- control appliance
- 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
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
To solve the situation that there is a risk of the occurrence of an unstable state, which may possibly occurs at increase of load, voltage drop of a power source, etc., when performing wide-angle current application which widens the angle of energization to a specified angle from 120[deg.]current application at an intermediate speed and performing 180[deg.]current application which makes the waveform a partial sine waveform for detection of induced voltage at a high speed, making a phase current match with a load torque at a low-speed revolution of a motor, in an operation method for torque control of a single-piston rotary compressor, which is performed by detecting the induced voltage, concerning the number of revolutions of a motor.In this operation controller, a high-speed performance at the same level as that of the energization of 180[deg.] in sine waves provided with a position sensor, is realized with high reliability, by eliminating a section where the lead angle control of partial sine waves is performed at the same time as with torque control, in whatever situation. (C)2004,JPO&NCIPI.
Description
Technical field
The present invention relates to a kind of frequent electric motor driven motor driven control appliance that changes of its load torque that is used to control.
Background technology
As the method for traditional control brushless direct-current (DC) motor, 120 degree advocate approach and sinusoidal wave 180 degree advocate approach are arranged.
120 degree advocate approach are methods of a kind of direct detection induced voltage zero cross signal.In the method, the phase voltage (phase voltage) of transducer and reference voltage are compared, thereby detect zero cross signal.According to this zero cross signal, changed commutation signal.Motor rotates a circle and will produce zero cross signal 12 times, promptly in other words, and in the electrical degrees (electric angle) of the mechanical angles (mechanical angle) of 30 degree or 60 degree (reference example such as below the patent documentation 1 listed).
180 degree advocate approach with the neutral point of motor winding with 3 mutually the electrical potential difference between the neutral point of the resistance circuit that connects of Y type be amplified to the output voltage of 3 phase converter, and with the electrical potential difference feed-in integrator circuit of amplification.This method obtains the detection position signal corresponding to induced voltage by the output signal of integrator circuit is compared with the low pass filter signal that the filter circuit of handling this output signal obtains then.In motor rotates a circle, produce this detection position signal 12 times, promptly in other words, in the mechanical angle or 60 degree electrical degrees of 30 degree.In the method, because signal has passed through integrating circuit, so phasing control is necessary (referring to for example patent documentation 2 and 3).
Patent documentation
1: Japan Patent discloses 2642357
2: the open H07-245982 of Japanese patent unexamined
3: the open H07-337079 of Japanese patent unexamined
But, there is following problem in conventional method.
Figure 11 is the control block diagram of the electric motor control device of tradition 120 degree motivational techniques.This method depends on that the zero cross point of induced voltage component compares.But, if motor load or supply voltage change rapidly, the zero cross signal of induced voltage can be hidden in the output voltage district of transducer, thereby can not detect zero cross signal.If this state has taken place, the step-out phenomenon can make converter system stop.
In addition, in 120 degree motivational techniques,, can determine the induced voltage of every phase continuously at one 60 degree electrical degree.But,, excitation angle is made as about 150 degree, then can only in the scope of 30 degree electrical degrees, carries out the continuous detecting of the induced voltage of every phase for the purpose of electric moter noise and vibration in the minimizing operating process.Therefore, even in normal operations, also exist the risk that step-out takes place, and wild effect such as off resonance (out-of-tune) also may take place.
In addition, Figure 12 A shows the relation between phase current waveform and the induction voltage waveform in 120 degree excited control methods.In normal operations, phase current is positioned at position 11 with respect to induced voltage 10, and when the maximum of revolution increased, phase current was before position 12.But, for phase current, it is very difficult being ahead of position 12 far away, so the maximum of revolution diminishes, and operation may be in the finite speed scope that can go wrong.
Figure 12 B shows the relation between phase current waveform and the induction voltage waveform in the 180 degree motivational techniques.In the sinusoidal wave 180 degree motivational techniques of the no transducer with current feedback method, in the normal operations process, phase current is positioned at position 13 with respect to induced voltage 10, and when maximum revolution increased, phase current was before position 14.In 180 degree motivational techniques, signal has passed through integrating circuit.Therefore, can not obtain the zero crossing position of induced voltage, and zero crossing position signalling and detection position phase difference between signals can there be a great difference according to mode of operation according to proofreading and correct absolute value.Therefore, the complexity of phasing control is necessary, and phasing or adjustment be difficult, and it is complicated that the calculating operation of this control becomes.In addition, exist the problem that needs output at neutral point, and owing to used three order harmonic component of induction voltage waveform, so this method can not be applied to use the motor of sinusoidal waveforms magnetic.
In addition, in sinusoidal wave 180 motivational techniques of the no transducer that utilizes the current feedback method, according to the position of magnetic pole of the desired value calculating motor of motor current and electric electromechanics constant (motor electric constant).Therefore, exist error of calculation change and reach the problem of the maximum of leading angle restriction of control motor current and revolution greatly, too early much smaller than the control method of use location transducer.
Summary of the invention
The present invention need not mechanical electromagnetism and picks up the method for transducer (mechanical electro-magnetic pickup sensor) and solved the problems referred to above by proposing a kind of new induced voltage FEEDBACK CONTROL, and essential purpose of the present invention provides a kind of motor driven control appliance, this equipment has been realized spending the high speed performance rank that motivational techniques are equal to the sine wave 180 of use location transducer, has guaranteed low cost and high reliability simultaneously.
To achieve these goals, motor driven control appliance according to the present invention comprises: direct current exchanges (DC-AC) conversion equipment, is used for according to pwm signal dc voltage being converted to AC voltage; The induced voltage checkout gear is used to detect the induced voltage of brushless motor, thereby produces the position of magnetic pole information signal; Voltage-operated device is used to use described position of magnetic pole information signal to produce voltage waveform signal; And the PWM control device, be used for described voltage waveform signal is converted to pwm signal.Order according to revolution increases is divided into three zones with whole brushless motor revolution control area, i.e. first area, second area and the 3rd zone.Voltage-operated device produces the voltage waveform signal of following waveform: first waveform (A) in the first area; Second waveform (B) in the second area and the 3rd waveform (C) in the 3rd zone.Wherein the 3rd waveform (C) is the sinusoidal segment ripple of an electrical degree cycle predetermined portions.
Preferably, in said structure, in the 3rd zone of the 3rd waveform (C), voltage-operated device can be according to predetermined physical quantities, determine to flow through the electric current of brushless motor with respect to the phase angle of induced voltage, described thus phase angle is the predetermined angular (α °) in 0 °-60 ° of scopes in advance.
Preferably, in said structure, this equipment also comprises the dc voltage checkout gear, be used to detect dc voltage, thereby position of magnetic pole information signal and the detected dc voltage information Control of dc voltage checkout gear voltage waveform signal that described voltage-operated device produces according to the induced voltage checkout gear wherein are used as described predetermined physical quantities with described position of magnetic pole information signal and described dc voltage information.
Preferably, in said structure, the said equipment can be installed in the air conditioner with 1 piston rotary compressor and heat exchanger, and this equipment also comprises the temperature-detecting device of described heat exchanger temperature Th of a plurality of detections and outside air temperature To, wherein temperature difference T1=Th-To is in preset range, and with described position of magnetic pole information signal and described temperature difference T1=Th-To as this predetermined physical quantities.
Preferably, in said structure, described brushless motor can be installed in the 1 piston rotary compressor, and this equipment is involving vibrations or sound detection device also, be used to detect 1 piston rotary compressor or its vibration that closes on or acoustic pressure information, thus with described position of magnetic pole information and described vibration or acoustic pressure information as this predetermined physical quantities.
Preferably, in said structure, described vibration detection device can be made up of torque meter (torquegauge) or vibration pickup (vibration pickup).
Preferably, in said structure, described acoustic pressure checkout gear can be made up of sound detection sensor.
Description of drawings
With reference to hereinafter combining the description of the drawings and claim, will make other purpose of the present invention and achievement are become apparent and easy to understand together with the present invention is understood more comprehensively, wherein identical part is represented with identical reference number in the accompanying drawing, wherein:
Fig. 1 is the control block diagram according to the motor driven of brushless DC motor of the present invention and control appliance;
Fig. 2 shows in the 180 degree sinusoidal segment wave excitation methods in first embodiment, depends on the phase current and the induced voltage of electrical degree.
Fig. 3 shows the voltage waveform type of voltage-operated device 4 outputs and the zone of exporting the revolution of these type waveforms;
Fig. 4 shows in first embodiment relation between gain and the brushless DC motor revolution;
Fig. 5 A and 5B show the relation between the advance angle α and brushless DC motor revolution in first embodiment;
Fig. 6 shows the relation between the advance angle α and dc voltage in first embodiment;
Fig. 7 is the control block diagram of motor driven and control appliance among second embodiment;
Fig. 8 A shows in a second embodiment temperature and the relation between the outside air temperature, the relation of the temperature of heat exchanger and load on the other hand of heat exchanger on the one hand;
Fig. 8 B shows the relation between load in a second embodiment and the advance angle;
Fig. 9 is the control block diagram of motor driven and control appliance among the 3rd embodiment;
Figure 10 A shows the relation between the vibration values and advance angle in the 3rd embodiment;
Figure 10 B shows the relation between the acoustic pressure and advance angle in the 3rd embodiment;
Figure 11 is the control block diagram of conventional motors drive control apparatus;
Figure 12 A shows in 120 degree motivational techniques, depends on the phase current and the induced voltage of electrical degree; And
Figure 12 B shows in 180 degree motivational techniques, depends on the phase current and the induced voltage of electrical degree.
Embodiment
Below with reference to the accompanying drawings embodiments of the invention are described.Because the basic structure of basic structure of the present invention and conventional art is similar, therefore identical part is explained with identical reference number in whole accompanying drawing, and for clarity, omits the explanation to repeating part here.
First embodiment
The first embodiment of the present invention is described to Fig. 6 below with reference to Fig. 1.
Fig. 1 is the control block diagram of first embodiment, wherein motor driven control appliance of the present invention is applied to comprise the air conditioner of 1 piston rotary compressor.
As shown in Figure 1, this air conditioner has the 1 piston rotary compressor 7 that brushless DC motor wherein has been installed.In the air conditioner that has used the motor driven control appliance, DC-AC transducer part 2 drives brushless DC motor (BLM) 1, and is detected the induced voltage of brushless DC motor 1 by induced voltage test section 3.In addition, detect the zero cross signal of induced voltage, and compare by the phase voltage and the reference voltage of voltage controller 4 with this DC-AC transducer part 2.PWM controller 5 changes the PWM modulation rate according to the voltage waveform signal 32 by voltage controller 4 outputs.Therefore, carry out the FEEDBACK CONTROL of DC-AC transducer part 2, and controlled the revolution of brushless DC motor 1.
DC-AC transducer part 2 is as the DC-AC conversion equipment with switching device, thereby by opening according to pwm signal 33 or closed switching device is converted to AC voltage with dc voltage.Therefore, obtain AC voltage and it is applied to brushless DC motor 1 from voltage source 6.The induced voltage of brushless DC motor 1 is detected in induced voltage test section 3, and the dc voltage that voltage source 6 produces is detected in dc voltage test section 30.Voltage controller 4 is according to signal 8 and 31, and the position of magnetic pole information 8 of induced voltage test section 3 outputs just and the output signal 31 of dc voltage test section 30 are exported the predetermined voltage waveform signal.PWM controller 5 is converted to pwm signal 33 with power supply wave shape signal 32.
Fig. 2 shows the sinusoidal segment ripple of the present invention 180 degree excitations according to electrical degree and amplitude.In Fig. 2, reference number 16 is illustrated in the induced voltage in the sinusoidal segment ripple 180 degree process of motivation, the corresponding phase current of 17 expressions, the leading phase electric current that 19 expression phase currents, 17 leading induced voltages 16 obtain, and the zero cross point of 15 expression induced voltages 16.
Fig. 3 shows the voltage waveform that depends on the motor revolution of voltage controller 4 outputs.In Fig. 3, transverse axis (x axle) 20 expression revolutions, and the left end point of transverse axis 20 represents that revolution is 0Hz.The scope in electromotor velocity zone is divided into three zones, be regional A (referring to " first area " or " low-speed region "), area B (referring to " second area " or " intermediate speed region ") and zone C (referring to " the 3rd zone " or " high-speed region "), wherein distinguish these three different voltage waveform A, B and C of output signals 32 by voltage controller 4.Voltage waveform A among the A of first area represents the known torque control phase current with the rate variation of 120 degree excitation phase currents.
Then, at second area B, 120 degree excitation phase currents become the sinusoidal segment ripple 180 degree excitation phase currents of representing with voltage waveform B 17.Next step, is in the 3rd zone C, the phase current 19 of phase current 17 leading induced voltages 16 to obtain representing by voltage waveform C.Minimum revolution among the regional A of reference number 28 expression torque controlling and driving, switching point (revolution at this motor is ft) between 24 expression first area A and the second area B, and the switching point (revolution at this motor is fw) between 25 expression second area B and the 3rd zone C.The 0＜ft here＜fw.
Fig. 4 shows the relation between torque ride gain Gt and the motor revolution.Reference number 27 expression gain curves, this curve points out that when revolution was Ft, yield value Gt became 0, and has pointed out torque controlling and driving minimum revolution 28 (referring to Fig. 3).Torque ride gain Gt (0%≤Gt≤100%) is provided with the composite rate of torque control and 120 degree excitation controls.
Next step will describe the operation of motor driven control appliance shown in Figure 1.
In the beginning period of motor driven operation, be difficult to obtain the information 8 of position of magnetic pole, reach a particular value up to the revolution of motor.Therefore, up to having reached specified rotation number, just by known simultaneous operation and acceleration beginning and driving brushless DC motor 1.
After reaching specified rotation number, the signal 32 of voltage controller 4 output low regime (promptly being exactly first area A) voltage waveform A.Therefore, can reduce the sound and the vibration of 1 piston rotary compressor 7 by known torque control.
According to torque ride gain Gt shown in Figure 4 with represented relation between the revolution of motor poles position (8), the voltage signal 32 of voltage controller 4 control waveform A, thereby at revolution Ft gain G t is made as 0%, that is, 120 degree excitation controls is made as 100%.By this way, can realize that the stabilized driving control from waveform A to waveform B is switched, and desynchronizing state can not take place.
At the intermediate speed region B of output voltage waveforms B, according to position of magnetic pole information 8, the output loading of voltage controller 4 increases to 100%.After the amplitude that has increased phase current 17, excitation angle expands to 120 ° to 180 °, at revolution fw the output of voltage controller 4 is made as 180 ° of sine waves of part of waveform C then, thereby, carries out excitation in the zone except that the zero cross point 15 at 180 ° of intervals of every electrical degree.In this manner, carrying out 180 ° of excitation controls simultaneously, can stably obtain position of magnetic pole information 8.
At the high-speed region C of output voltage waveforms C, phase current 17 leading induced voltage 16 certain angle alpha ° (0 °≤α °≤60 °).Calculate these certain angle alpha ° to obtain the leading phase electric current 19 of voltage waveform C according to position of magnetic pole information 8.In this manner, realized operating in the drive controlling of high-speed region.
When carrying out this operation, if the load of brushless DC motor 1 increases, even then the duty ratio of pwm signal increases to 100%, the revolution of motor can not increase yet.Therefore the intermediate speed region B of voltage waveform B becomes narrow, and may destroy the relation of 0＜ft＜fw with being a problem.In this case, carry out the control of torque control and leading angle simultaneously, thereby can avoid the step-out phenomenon.In addition, if because dc voltage reduces, and the revolution of brushless DC motor 1 reduces suddenly, then also can carry out the control of torque control and leading angle simultaneously.
Shown in Fig. 5 A, voltage controller 4 determines to depend on revolution X (=ft) leading angle α with linear function.That is, when 0＜X≤fw, α=0; When fw＜X≤fw1, α=bX (b is a constant-slope); When fw1＜X, α=α 1 (α 1 is a constant) satisfies the relation of 0＜fw＜ft here all the time.
But, as mentioned above, if load increases, then the relation of fw＜ft may become problem.In order to eliminate this problem, shown in Fig. 5 B, under the situation of fw＜ft, when X=ft, α is made as 0.Therefore subsidiary problem in the leading control can be avoided, thereby the torque control of 1 stable piston rotary compressor can be realized.
In addition, in this structure, provide dc voltage test section 30 to feed back to the dc voltage information 31 of voltage controller 4 with generation.Even the duty ratio of pwm signal increases to 100%, do not increase and can not satisfy under the situation of 0＜ft＜fw relation at the motor revolution, as shown in Figure 6, when dc voltage drops to VL, α is made as 0.Utilize this structure, can realize stable 1 piston rotary compressor torque control, and irrelevant with the decline of dc voltage.
Second embodiment
The second embodiment of the present invention is described to Fig. 4 and Fig. 7,8A and 8B referring now to Fig. 2.In first embodiment, Fig. 2 is illustrated to Fig. 4.
Fig. 7 is the control block diagram of second embodiment.As shown in Figure 7, the difference of the structure of second embodiment and first example structure is to have added heat exchanger 41, temperature detection part 40 and outside air temperature test section 42 in first example structure.Notice the temperature T h of 43 expression heat exchangers 41, and the temperature T o of 44 expression outside airs.
In the present embodiment, therefore identical among the basic controlling of other element and first embodiment omit the explanation to it here.
Fig. 8 A show by temperature 43 (=Th) and the 44 (=load areas that To) obtain, and Fig. 8 B shows the advance angle that depends on load.
Shown in Fig. 8 A, at first obtain the poor T1 (T1=Th-To) between temperature T h and the temperature T o, and (To T1) obtains being defined as the regional TO of overload region at coordinate by following equation and inequality.
T1 〉=-aTo+b (a and b are constants),
To1≤To≤Tomax，
T11≤T1≤T1max。
If load is in regional TO, determines that then the load of brushless DC motor is overload, and shown in Fig. 8 B, advance angle is made as 0.Utilize this set, can realize stable 1 piston rotary compressor torque control.
The 3rd embodiment
With reference now to Fig. 2, to Fig. 4 and Fig. 9,10A and 10B the third embodiment of the present invention is described.Fig. 2 is illustrated to Fig. 4.
Fig. 9 is the control block diagram of the 3rd embodiment.As shown in Figure 9, the structure of the 3rd embodiment is different with first embodiment's, has wherein replaced dc voltage test section 30 with torque meter 52.Torque meter 52 detects the vibration information 53 of 1 piston rotary compressor 7 as vibration detection device.Therefore, vibration information 53 is fed back to voltage controller 4.
Shown in Figure 10 A, determine to be used in the 3rd zone C among Fig. 3 voltage waveform C according to the vibration information 53 of the brushless DC motor 1 that in the advance angle control procedure, produces leading angle α °.That is, when vibration values 53 is equal to or less than predetermined value A, can progressively increase or reduce the value of α.Utilize this set, can realize depending on the fine adjustments of the α of load, and in comprising the gamut of high velocity, realize stable operation.
In addition, shown in Figure 10 B, vibration values is different with using, and by being accompanied by the acoustic information feedback that vibration produces, can access similar effects.In this case, when the acoustic pressure amount is equal to or less than predetermined value B, can progressively increase or reduce the value of α.
Therefore, in the 3rd embodiment,, can access predetermined physical quantity by detecting 1 piston rotary compressor or vibration or the vibration detection device of sound or the output of sound detection device around it.
Preferably, vibration detection device can be made up of torque meter (52) or vibration pickup.In addition, sound detection device can be made up of sound detection sensor.
Other basic operation of present embodiment is basically the same as those in the first embodiment, and omits the explanation to it herein.
The invention effect
As mentioned above, the present invention has realized high speed performance by being provided a predetermined non-excitation period and forming the waveform of phase current by the sinusoidal segment ripple except that the zero cross point of position of magnetic pole information in the phase current of brushless DC motor.In addition, the present invention has removed the zone of carrying out known torque control and leading angle control simultaneously, and regulates the leading angle of the leading induced voltage of phase current according to position of magnetic pole information.Utilize this structure, can realize the motor driven control appliance of high reliability, and need not to install mechanical electromagnetism pickup or integrating circuit.
In addition, according to the present invention,, concern ft＜fw thereby always satisfy by the overload of detected temperatures detection brushless DC motor.Utilize this set, can realize the motor driven control appliance of high reliability.
In addition,, detected dc voltage, thereby concerned ft＜fw even when dc voltage produces variation suddenly, also can satisfy according to the present invention.Utilize this structure, can realize the motor driven control appliance of high reliability.
In addition, according to the present invention, detected the vibration or the sound of 1 piston rotary compressor.Utilize this structure, can realize allowing to control the motor driven control appliance of leading angle.
Claims (7)
1. motor driven control appliance comprises:
Direct current AC conversion apparatus (2) is used for according to pwm signal (33) direct voltage being converted to alternating voltage;
Induced voltage checkout gear (3) is used to detect the induced voltage of brushless motor (1), thereby produces position of magnetic pole information signal (8);
Voltage-operated device (4) is used to use described position of magnetic pole information signal (8) to produce voltage waveform signal (32); And
PWM control device (5) is used for described voltage waveform signal (32) is converted to pwm signal (33),
The order that increases according to revolution wherein is divided into three zones with the revolution control area of whole brushless motor (1), i.e. first area, second area and the 3rd zone,
Wherein said voltage-operated device (4) produces following voltage waveform signal: first waveform (A) in the first area; Second waveform (B) in the second area and the 3rd waveform (C) in the 3rd zone,
Wherein the 3rd waveform (C) is the sinusoidal segment ripple of electrical degree predetermined portions in the cycle.
2. motor driven control appliance according to claim 1, it is characterized in that in the 3rd zone of the 3rd waveform (C), described voltage-operated device (4) can be according to predetermined physical quantities, determine to flow through the electric current of brushless motor with respect to the phase angle of induced voltage, the predetermined angular (α °) that described thus phase angle is leading in 0 °-60 ° of scopes.
3. motor driven control appliance according to claim 2, it is characterized in that also comprising dc voltage detecting device (30), be used to detect direct voltage, thereby position of magnetic pole information signal (8) and the detected direct voltage information of described dc voltage detecting device (30) (31) control waveform signal (32) that described voltage-operated device (4) produces according to described induced voltage checkout gear (3) wherein are used as described predetermined physical quantities with described position of magnetic pole information signal (8) and described direct voltage information (31).
4. motor driven control appliance according to claim 2, it is characterized in that described motor driven control appliance is installed in the air conditioner with 1 piston rotary compressor (7) and heat exchanger (41), and described motor driven control appliance also comprises the temperature-detecting device (40 of described heat exchanger temperature Th of a plurality of detections and outside air temperature To, 42), wherein temperature difference T1=Th-To is in preset range, and with described position of magnetic pole information signal (8) and described temperature difference T1=Th-To as predetermined physical quantities.
5. motor driven control appliance according to claim 2, it is characterized in that described brushless motor is installed in the 1 piston rotary compressor (7), and described motor driven control appliance is involving vibrations or sound detection device (52) also, be used to detect 1 piston rotary compressor or vibration or acoustic pressure information (53) near it, thus with described position of magnetic pole information (8) and described vibration or acoustic pressure information (53) as predetermined physical quantities.
6. motor driven control appliance according to claim 5, it is characterized in that described vibration detection device by torque meter (52) or the vibration pickup form.
7. motor driven control appliance according to claim 5 is characterized in that described acoustic pressure checkout gear is made up of sound detection sensor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003052841 | 2003-02-28 | ||
| JP2003052841A JP2004266904A (en) | 2003-02-28 | 2003-02-28 | Operation controller for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1531186A true CN1531186A (en) | 2004-09-22 |
Family
ID=33117607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100070725A Pending CN1531186A (en) | 2003-02-28 | 2004-02-27 | Motor driving controlling apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004266904A (en) |
| CN (1) | CN1531186A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545479B (en) * | 2009-04-29 | 2010-12-01 | 江苏昊泰气体设备科技有限公司 | PWM energy-saving control device for rechargeable battery powered compressor |
| WO2014084222A1 (en) * | 2012-11-27 | 2014-06-05 | 株式会社マキタ | Pounding tool |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100848185B1 (en) * | 2004-06-10 | 2008-07-23 | 인터내쇼널 렉티파이어 코포레이션 | Method for controlling an electric motor to reduce emi |
| JP2008206323A (en) * | 2007-02-21 | 2008-09-04 | Matsushita Electric Ind Co Ltd | Motor driving device |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2642357B2 (en) * | 1987-06-29 | 1997-08-20 | 株式会社東芝 | Control device for brushless motor |
| JPH04275091A (en) * | 1991-02-28 | 1992-09-30 | Toshiba Corp | Drive controller for commutatorless motor |
| JPH06235547A (en) * | 1993-02-09 | 1994-08-23 | Toshiba Corp | Air conditioner |
| JP3424307B2 (en) * | 1994-03-04 | 2003-07-07 | ダイキン工業株式会社 | Brushless DC motor |
| JP3371543B2 (en) * | 1994-06-07 | 2003-01-27 | ダイキン工業株式会社 | Brushless DC motor |
| JPH08196096A (en) * | 1995-01-13 | 1996-07-30 | Matsushita Electric Ind Co Ltd | Inverter |
| JPH09159255A (en) * | 1995-12-07 | 1997-06-20 | Matsushita Seiko Co Ltd | Inverter |
| JP3362150B2 (en) * | 1995-12-22 | 2003-01-07 | ダイキン工業株式会社 | Brushless DC motor driving method and device |
| JPH09312988A (en) * | 1996-05-22 | 1997-12-02 | Matsushita Seiko Co Ltd | Motor driving device for air conditioner |
| JP3666319B2 (en) * | 1999-09-29 | 2005-06-29 | 松下電器産業株式会社 | Motor control method |
| JP3645793B2 (en) * | 2000-06-08 | 2005-05-11 | シャープ株式会社 | Motor control device |
| JP3450284B2 (en) * | 2000-08-22 | 2003-09-22 | 松下電器産業株式会社 | Control device for brushless motor |
| JP4121718B2 (en) * | 2001-05-18 | 2008-07-23 | 松下電器産業株式会社 | Inverter device |
-
2003
- 2003-02-28 JP JP2003052841A patent/JP2004266904A/en active Pending
-
2004
- 2004-02-27 CN CNA2004100070725A patent/CN1531186A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545479B (en) * | 2009-04-29 | 2010-12-01 | 江苏昊泰气体设备科技有限公司 | PWM energy-saving control device for rechargeable battery powered compressor |
| WO2014084222A1 (en) * | 2012-11-27 | 2014-06-05 | 株式会社マキタ | Pounding tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004266904A (en) | 2004-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1819438A (en) | Inverter device | |
| CN1721704A (en) | Fan control system using a microcontroller | |
| CN1992499A (en) | Apparatus and method for detecting phase currents of inverter | |
| CN1306340A (en) | Device for detecting rotor position of brushless d.c. motor | |
| JP2005168287A (en) | Method and apparatus for optimizing efficiency of motor operating under load | |
| CN101056084A (en) | Direct torque brushless DC servo control system and its working method | |
| CN1099532A (en) | Apparatus for controlling driving of brushless DC motor and driving method | |
| CN1992498A (en) | Electric powder converting apparatus and control method for the apparatus | |
| CN1848659A (en) | Control method and control circuit for brushless DC motor | |
| CN1925307A (en) | Motor speed control integrated circuit | |
| CN1784824A (en) | Controller of permanent magnet synchronous motor | |
| CN1992504A (en) | Motor synchronizing speed control apparatus | |
| CN1968001A (en) | Control device of brushless electromotor | |
| CN105391351A (en) | Bldc motor control system and control method | |
| CN101076938A (en) | Motor drive unit | |
| CN1625042A (en) | Torque ripple and noise reduction by avoiding mechanical resonance for a brushless DC machine | |
| CN1505256A (en) | Motor driving circuit | |
| CN1893255A (en) | Motor control apparatus | |
| JP5790390B2 (en) | AC motor control device and control method | |
| CN102299672A (en) | Direct voltage sinusoidal wave drive method for direct-current brushless motor | |
| CN1074204C (en) | Fan drive device | |
| CN1531186A (en) | Motor driving controlling apparatus | |
| JP4705839B2 (en) | Power converter | |
| CN1655439A (en) | Drive device for motor and air conditioner using same | |
| CN1097756C (en) | Control and operation method for rotary machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |