CN1797933A - Control system of switch magnetic resistance motor, and control method - Google Patents
Control system of switch magnetic resistance motor, and control method Download PDFInfo
- Publication number
- CN1797933A CN1797933A CNA2004100970682A CN200410097068A CN1797933A CN 1797933 A CN1797933 A CN 1797933A CN A2004100970682 A CNA2004100970682 A CN A2004100970682A CN 200410097068 A CN200410097068 A CN 200410097068A CN 1797933 A CN1797933 A CN 1797933A
- Authority
- CN
- China
- Prior art keywords
- signal
- motor
- switched reluctance
- mentioned
- control system
- 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 Electric Motors In General (AREA)
Abstract
The control system includes following parts: based on rotor position of motor, sensor part outputs high/low signal; based on the said high/low signal, micro computer generates grid signal; logic add part adds signal to signal output from micro computer so as to output final grid signal not related to noise, even noise is generated in high/low signal output from the sensor part. The invention generates and outputs final signal of grid not related to noise so as to prevent component of switch magnetic resistance motor from breakage. Moreover, cleaner with switch magnetic resistance motor being installed can avoid error operating.
Description
Technical field
The present invention relates to a kind of switched Reluctance Motor Control System and control method thereof, particularly relate to and a kind of the signal of exporting in sensor output signal and the microcomputer is carried out logic add, so that during the control switch reluctance motor, even the sensor signal generation noise of perception rotor-position also can be avoided the switched Reluctance Motor Control System and the control method thereof of operating mistake.
Background technology
See also Fig. 1 to shown in Figure 3, Figure 1 shows that the schematic diagram of regular tap reluctance motor structure.Figure 2 shows that the schematic diagram of the drive circuit of single-phase switch reluctance machine.Fig. 3 is the signal waveform schematic diagram that produces in the conventional switch reluctance motor control system.
(Switched Reluctance Motor SRM) comprises: drive division single-phase switch reluctance machine; The stator 20 of magnet exciting coil (W1 to the W3) winding by above-mentioned drive division received current; In said stator 20 inboards during with the current direction magnet exciting coil, by and said stator 20 between the reluctance torque rotor rotated 10 that takes place.
Said stator 20 comprises: a plurality of salient poles 21 that the projection that keeps at a certain distance away with above-mentioned rotor 10 forms; Also has winding in the magnet exciting coil (W1 to W3) of above-mentioned salient pole; Above-mentioned rotor 10 and the column outside segment distance of being separated by, stacked projection forms the rotor magnetic core 18 of the magnetic core of 6 salient poles 11.And the central authorities of above-mentioned rotor 10 are provided with the armature spindle of transmission motor-driven power, thereby rotate and driving with above-mentioned rotor is common.And bottom and rotation in order to support rotor 10 are provided with bearing 19 in top and bottom.
Above-mentioned drive division is to receive perceptual signal from sensing devices such as a plurality of optical sensors of the position of the above-mentioned rotor 10 of perception or speed or Hall element 30, thereby along with produce disconnecting and the driving pulse signal that is connected the switch that is connected with in opposite directions a pair of magnet exciting coil successively, so that electric current is transmitted.
Switched reluctance machines disconnects when being connected switch (SW1, SW2, SW3), be connected with the magnet exciting coil (W1 to W3) around salient pole, when impelling current delivery by the input of above-mentioned drive division to above-mentioned magnet exciting coil, if circulating current, will produce reluctance torque between said stator 20 and rotor 10, the direction rotation minimum to magnetoresistance drives.
And, above-mentioned switched reluctance machines be included in above-mentioned rotor 10 around produce the stagnation magnet (parking magnet) 16 of mutual magnetic with the annular magnet 15 of ring-like formation and with above-mentioned ring magnet 15 so that drive to the single direction rotation.
The operation transducer (S1) and the start sensor (S2) of two transducers (S1, S2) perception rotor-position when comprising electric motor starting of common above-mentioned sensing device.Fig. 3 shows according in above-mentioned operation/start sensor (S1, S2), the high/low signal that the size of the reluctance torque that produces at motor takes place and thus from the pwm signal of signal that drive division is exported and the curve of DWELL signal.When above-mentioned drive division is electric motor starting, with the signal output pwm signal, and motor when operation, then with signal output DWELL signal.
At this moment, above-mentioned drive division is that reception is exported signal by the edge signal of the high-low signal of transducer output.That is, starting is interval to receive the rising edge signal of start sensor (S2) and output pwm signal, and receives the decline edge signal of operation transducer (S1) and disconnect pwm signal.In addition, during the high-speed cruising, then receive the rising edge signal of operation transducer (S1), and carry out high-speed cruising by the DWELL signal of certain hour.
, when switched reluctance machines is installed in cleaner, will move, thereby not only can make the signal amplitude of transducer output less, also can make noise because the conversion of heavy current is transferred to transducer with 2～40,000 rpm.
As mentioned above, the drawback of conventional art is: cause the edge of misidentification transducer, so that in accurate position output signal, and to motor input overload current, thereby damage element or the error running of motor occurs.
This shows that above-mentioned existing switched Reluctance Motor Control System and control method thereof obviously still have inconvenience and defective, and demand urgently further being improved in structure, method and use.In order to solve the problem that switched Reluctance Motor Control System and control method thereof exist, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing switched Reluctance Motor Control System and control method thereof exist, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of the switched Reluctance Motor Control System and the control method thereof of founding a kind of new structure, can improve general existing switched Reluctance Motor Control System and control method thereof, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Main purpose of the present invention is, overcome the defective that existing switched Reluctance Motor Control System and control method thereof exist, and provide a kind of new switched Reluctance Motor Control System and control method thereof, technical problem to be solved is when making dust catcher loaded switches reluctance motor, according to motor operating state motor-driven is added with the signal logic of exporting in signal and the transducer, even the signal of transducer output is less or signal in when noise occurring, also can prevent to receive higher overcurrent, finally prevent the misoperation of motor, thereby be suitable for practicality more, and have the value on the industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of switched Reluctance Motor Control System that the present invention proposes, it comprises: sensor part, export high signal/low signal according to the rotor-position of switched reluctance machines; Microcomputer produces signal according to the high signal/low signal in the output of the sensor portion; Logic add portion, the information of logic add the sensor portion and microcomputer output when producing noise in the high signal/low signal of sensor part output, also can be exported and the irrelevant final signal of noise.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid switched Reluctance Motor Control System, wherein said sensor part comprises: the start sensor of exporting high signal/low signal according to the position of the rotor in the motor starting process; Export the operation transducer of high signal/low signal according to the rotor-position in the motor operation course.
Aforesaid switched Reluctance Motor Control System, wherein said logic add portion makes the above-mentioned operation transducer of motor starting process and the AND value of start sensor and signal be output as final signal, makes that the AND value of above-mentioned operation transducer and signal is output as final signal in the motor operation course.
Aforesaid switched Reluctance Motor Control System, wherein said logic add comprises: the operation transducer control port of the high signal of input in motor starting process and the motor operation course; Will import low signal in the motor starting process, the motor start sensor control port that will import high signal in service; When above-mentioned two transducer control ports are imported high signal, make the AND value of the signal of the output signal of related sensor and microcomputer be output as final signal.
Aforesaid switched Reluctance Motor Control System, wherein, microcomputer is exported pwm control signal when electric motor starting; Output DWELL control signal when motor moves.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.The control method of a kind of switched Reluctance Motor Control System that proposes according to the present invention, it comprises: start sensor, the rotor-position during according to electric motor starting is exported high signal/low signal; The operation transducer, rotor-position is exported high signal/low signal when moving according to motor; Microcomputer produces signal according to high signal/low signal of exporting in above-mentioned two transducers.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The control method of aforesaid switched Reluctance Motor Control System, whether it also comprises: the phase I, start or move according to motor, the signal of exporting in signal that logic add is exported in above-mentioned start sensor or operation transducer and the above-mentioned microcomputer; Second stage, the logic add signal of above-mentioned phase I outputs to switched reluctance machines as final signal.
The control method of aforesaid switched Reluctance Motor Control System, in the above-mentioned phase I, during above-mentioned electric motor starting, the signal of exporting in start sensor and operation transducer and the microcomputer will be by the AND logic add, thereby during the motor operation, impel the signal of exporting in operation transducer and the microcomputer to be reached logic add by AND.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, the invention provides a kind of is the switched Reluctance Motor Control System and the control method thereof of feature with following content, and it comprises: the sensor part of exporting high signal/low signal according to the rotor-position of switched reluctance machines; Produce the microcomputer of signal according to the high signal/low signal of the sensor portion output; The signal of exporting in logic add the sensor and the microcomputer, when making the high-low signal generation noise of in sensor part, exporting, the logic add portion of the final signal that exportable and its noise are irrelevant.
And it is the switched Reluctance Motor Control method of feature with following content that the present invention also provides a kind of, and it comprises: the rotor-position during according to electric motor starting is exported the start sensor of high signal/low signal; Rotor-position is exported the operation transducer of high signal/low signal when moving according to motor; Produce the microcomputer of signal according to high signal/low signal of exporting in above-mentioned two transducers.
And according to the present invention, it also comprises: whether motor starts or moves, and the signal of exporting in signal that logic add is exported in above-mentioned start sensor or operation transducer and the above-mentioned microcomputer is the phase I; As final signal, it is second stage that the logic add signal of above-mentioned phase I outputs to switched reluctance machines.
Via as can be known above-mentioned, the invention relates to a kind of switched Reluctance Motor Control System and control method thereof, it comprises: the sensor part of exporting high signal/low signal according to the rotor-position of switched reluctance machines; Produce the microcomputer of signal according to high-low signal in the output of the sensor portion; The information of logic add the sensor portion and microcomputer output, when in the high signal/low signal of sensor part output, producing noise, the logic add portion that also can export the final signal that has nothing to do with noise.According to the present invention, sensor signal that can the perception motor rotor position is transferred to microcomputer, even and that noise takes place is also unaffected, and produce and the final signal of output, thereby prevent the damage of switched reluctance machines element.In addition, dust catcher loaded switches reluctance motor also can prevent operating mistake.
By technique scheme, switched Reluctance Motor Control System of the present invention and control method thereof have following advantage at least: switched Reluctance Motor Control System of the present invention and control method thereof, it is characterized in that it comprises: the sensor part of exporting high signal/low signal according to the rotor-position of switched reluctance machines; And according to the microcomputer that produces signal at the high signal/low signal of the sensor portion output; The information of logic add the sensor portion and microcomputer output, when in the high signal/low signal of sensor part output, producing noise, the logic add portion that also can export the final signal that has nothing to do with noise; When thereby the sensor signal that makes the perception motor rotor position is transferred to microcomputer, even if taking place, noise also can and export final signal with its irrelevant generation, reach and to prevent that the switched reluctance machines element is destroyed, and dust catcher loaded switches reluctance motor can prevent the effect of faulty operation.
In sum, the switched Reluctance Motor Control System of special construction of the present invention and control method thereof, when making dust catcher loaded switches reluctance motor, according to motor operating state motor-driven is added with the signal logic of exporting in signal and the transducer, even the signal of transducer output is less or signal in when noise occurring, also can prevent to receive higher overcurrent, finally prevent the misoperation of motor.It has above-mentioned many advantages and practical value, and in like product and manufacture method, do not see have similar structural design and method to publish or use and really genus innovation, no matter it all has bigger improvement on product structure, manufacture method or function, have large improvement technically, and produced handy and practical effect, and more existing switched Reluctance Motor Control System and control method thereof have the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Figure 1 shows that the schematic diagram of regular tap reluctance motor structure.
Figure 2 shows that the schematic diagram of the drive circuit of single-phase switch reluctance machine.
Fig. 3 is the signal waveform schematic diagram that produces in the conventional switch reluctance motor control system.
Figure 4 shows that schematic diagram according to switched Reluctance Motor Control System of the present invention.
Fig. 5 is the schematic diagram that produces signal waveform in switched Reluctance Motor Control System of the present invention.
Fig. 6 a, 6b are in tradition and switched Reluctance Motor Control System of the present invention, the schematic diagram of out gate and final signal when in the sensor signal noise taking place.
Fig. 7 a, 7b is depicted as 6a, the schematic diagram of the test value of 6b.
40: transducer S11: the operation transducer
S12: start sensor 50: microcomputer
60: logic add portion 61: operation transducer control port
62: the start sensor control port
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to switched Reluctance Motor Control System and its embodiment of control method, structure, manufacture method, step, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Seeing also shown in Figure 4ly, is the schematic diagram according to switched reluctance machines of the present invention.As shown in the figure, it comprises: switched Reluctance Motor Control System of the present invention is by the sensor part 40 of the position output high-low signal of perception rotor; According to 40 perception of the sensor portion, the microcomputer 50 of output pulse signal pwm signal or DWELL signal; According to whether starting/move above-mentioned motor, the signal of output in logic add the sensor portion 40 and the microcomputer 50 finally is output as the logic add portion 60 of signal.
At this moment, the sensor portion 40 comprises: the operation transducer S11 of perception rotor-position in the motor operation course; The start sensor S12 from the position is changeed in perception in the motor starting process.Above-mentioned microcomputer 50 is identical with traditional computer operation, and according to the edge signal of exporting among two transducer S11, the S12, output pwm signal or DWELL signal.
And, above-mentioned logic add portion 60, as shown in the figure, it comprises: according to the control port 61,62 that whether starts/move motor input high-low signal; A plurality of diode D1, D2; Also have transistor T 11a, T11b, T12a, T12b.
At this moment, when above-mentioned electric motor starting, from above-mentioned microcomputer 50 output pwm signals, and by above-mentioned operation transducer control port 61 and the high signal of start sensor control port 62 inputs, a plurality of transistor T 11a, T11b, T12a, the T12b that is connected with operation transducer S11 and start sensor S12 will open subsequently, the pwm signal AND that exports in final signal of being exported in above-mentioned two transducer S11, S12 by above-mentioned logic add portion 60 logic adds and the microcomputer 50.
And, when above-mentioned motor moves particularly high-speed cruising, will in above-mentioned microcomputer 50, export the DWELL signal, the high signal of input in above-mentioned operation transducer control port 61 is imported low signal in above-mentioned start sensor control port 62 then.Though at this moment transistor T 11a, the T11b that is connected with operation transducer S11 will open, the transistor T 12a, the T12b that are connected with start sensor S12 will close.Subsequently, will be formed on the AND logic add of the DWELL signal of exporting in the value exported among the above-mentioned operation transducer S11 and the microcomputer in the logic add portion 60.
Above-mentioned logic add portion 60 outputs to switched reluctance machines with AND logic add signal as final signal.
Seeing also shown in Figure 5ly, is the signal waveform schematic diagram according to switched Reluctance Motor Control System of the present invention output.As shown in the figure, the output signal rank of moving transducer S11 and start sensor S12 according to the size of magnetic resistance is different, microcomputer and traditional the same output pwm signal of switched reluctance machines and DWELL signal.That is, shown in Figure 5, in the switched Reluctance Motor Control System of the present invention in each transducer S11, S12 and the microcomputer 50 signal of transmission identical with existing mode.But, under the situation of final signal, be operation transducer S11 (∩), start sensor S12 (∩), microcomputer output signal (PWM) during electric motor starting, then be operation transducer S11 (∩), microcomputer output signal (DWELL) during the motor operation.
But control system of the present invention is different with conventional art, and it is to generate final signal and output in logic add portion, and Fig. 6 a and Fig. 6 b have shown its significant difference.
That is, during the signal generation noise exported in start sensor, conventional ADS driving portion will cooperate output pwm signal with it, and the signal that is input to motor is still shown in Fig. 6 a, and is identical.
But according to the present invention, shown in Fig. 6 b, though the identical output pwm signal with conventional art of microcomputer, final signal of exporting after the logic add and noise are irrelevant.And switched reluctance machines need not to damage element, also can realize driving.
See also shown in Fig. 7 a and Fig. 7 b, be respectively the curve chart of conventional switch reluctance motor control system and switched Reluctance Motor Control System of the present invention, it comprises: sensor signal, be input into signal in the motor, final signal and electric moter voltage and electric current.
Shown in Fig. 7 a, the conventional switch reluctance motor if noise takes place during input sensor signal, will be exported signal in advance not under normal interval situation, can receive required high voltage and heavy current with this motor.
Shown in Fig. 7 b, switched Reluctance Motor Control System of the present invention is identical with sensor signal on interval, only transmits final signal in normal interval to motor, and transmits normal voltage and current to motor.
Above-mentioned all have many saving graces as the method and the switched Reluctance Motor Control System of the present invention of architecture formation and the technological innovation of control method thereof for technical staff of the same trade now, and the progressive that possesses skills really.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (8)
1, a kind of switched Reluctance Motor Control System is characterized in that it comprises:
Sensor part is exported high signal/low signal according to the rotor-position of switched reluctance machines;
Microcomputer produces signal according to the high signal/low signal in the output of the sensor portion;
Logic add portion, the information of logic add the sensor portion and microcomputer output when producing noise in the high signal/low signal of sensor part output, also can be exported and the irrelevant final signal of noise.
2, switched Reluctance Motor Control System according to claim 1 is characterized in that wherein said sensor part comprises: the start sensor of exporting high signal/low signal according to the position of the rotor in the motor starting process; Export the operation transducer of high signal/low signal according to the rotor-position in the motor operation course.
3, switched Reluctance Motor Control System according to claim 2, it is characterized in that wherein said logic add portion makes the above-mentioned operation transducer of motor starting process and the AND value of start sensor and signal be output as final signal, make that the AND value of above-mentioned operation transducer and signal is output as final signal in the motor operation course.
4, switched Reluctance Motor Control System according to claim 3 is characterized in that wherein said logic add comprises:
The operation transducer control port of the high signal of input in motor starting process and the motor operation course;
Will import low signal in the motor starting process, the motor start sensor control port that will import high signal in service;
When above-mentioned two transducer control ports are imported high signal, make the AND value of the signal of the output signal of related sensor and microcomputer be output as final signal.
5, switched Reluctance Motor Control System according to claim 1 is characterized in that:
Wherein, microcomputer is exported pwm control signal when electric motor starting;
Output DWELL control signal when motor moves.
6, a kind of control method of switched Reluctance Motor Control System is characterized in that it comprises:
Start sensor, the rotor-position during according to electric motor starting is exported high signal/low signal;
The operation transducer, rotor-position is exported high signal/low signal when moving according to motor;
Microcomputer produces signal according to high signal/low signal of exporting in above-mentioned two transducers.
7, the control method of switched Reluctance Motor Control System according to claim 6 is characterized in that it also comprises:
Phase I, whether start or move according to motor, the signal of exporting in signal that logic add is exported in above-mentioned start sensor or operation transducer and the above-mentioned microcomputer;
Second stage, the logic add signal of above-mentioned phase I outputs to switched reluctance machines as final signal.
8, the control method of switched Reluctance Motor Control System according to claim 7, it is characterized in that in the above-mentioned phase I, during above-mentioned electric motor starting, the signal of exporting in start sensor and operation transducer and the microcomputer will be by the AND logic add, thereby during the motor operation, impel the signal of exporting in operation transducer and the microcomputer to be reached logic add by AND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100970682A CN1797933A (en) | 2004-12-21 | 2004-12-21 | Control system of switch magnetic resistance motor, and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100970682A CN1797933A (en) | 2004-12-21 | 2004-12-21 | Control system of switch magnetic resistance motor, and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1797933A true CN1797933A (en) | 2006-07-05 |
Family
ID=36818765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100970682A Pending CN1797933A (en) | 2004-12-21 | 2004-12-21 | Control system of switch magnetic resistance motor, and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1797933A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7923958B2 (en) | 2006-10-25 | 2011-04-12 | Lg Electronics Inc. | Apparatus and method for driving 2-phase SRM motor |
| CN104300939A (en) * | 2014-09-29 | 2015-01-21 | 杭州电子科技大学 | Circuit for converting level signal into pulsed magnet field signal |
-
2004
- 2004-12-21 CN CNA2004100970682A patent/CN1797933A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7923958B2 (en) | 2006-10-25 | 2011-04-12 | Lg Electronics Inc. | Apparatus and method for driving 2-phase SRM motor |
| CN101317326B (en) * | 2006-10-25 | 2011-08-03 | Lg电子株式会社 | Apparatus and method for driving two-phase SRM electric motor |
| CN104300939A (en) * | 2014-09-29 | 2015-01-21 | 杭州电子科技大学 | Circuit for converting level signal into pulsed magnet field signal |
| CN104300939B (en) * | 2014-09-29 | 2016-12-07 | 杭州电子科技大学 | A kind of circuit that level signal is converted to pulsed magnetic field signal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101404435B (en) | Magnetic field speed reduction type low speed large torque moment permanent-magnet brushless DC motor | |
| CN100352146C (en) | Opening/closing reluctance motor and initial driving method | |
| US20130093374A1 (en) | Method of starting a brushless motor | |
| CN1773817A (en) | AC plate type non-core permasyn motor based on Halbach array | |
| CN1520021A (en) | Controller | |
| CN101030746A (en) | Device for driving a single phase motor | |
| CN101030712A (en) | Low-speed DC direct-driven brushless motor with segmented modularized stator structure | |
| CN100341237C (en) | Circuit and method for controlling brushless DC motor | |
| CN201466836U (en) | Three-phase centralized winding type electric motor with redundant winding | |
| CN104527912A (en) | Multifunctional brushless and toothless big hub motor with manual stator and rotor clutch function | |
| CN1797933A (en) | Control system of switch magnetic resistance motor, and control method | |
| CN1758528A (en) | Output torque depulsation control method for switch reluctance servo motor | |
| CN1862928A (en) | Modularized stator structure low-speed DC brushless motor | |
| CN102111055A (en) | Outer rotor type permanent-magnet machine | |
| CN1756035A (en) | Single phase induction motor | |
| CN201213237Y (en) | Magnetic field speed reducing type large torque permanent magnet brushless DC motor | |
| CN105680649A (en) | Axial and radial magnetic flux doubly salient permanent magnet motor | |
| CN200969555Y (en) | Integrated brushless DC measurement generator | |
| CN115378155A (en) | Hybrid surface-embedded spoke type permanent magnet asymmetric magnetic axis offset motor | |
| CN204131245U (en) | Low noise type switched reluctance machines | |
| CN209526642U (en) | A kind of transverse magnetic general formula motor | |
| CN2831608Y (en) | Easy-to-start circuit structure of d.c. monophase brushless motor | |
| CN2622928Y (en) | Speed control circuit of d.c. brushless fan motor | |
| CN201418018Y (en) | High-efficient switched reluctance motor | |
| CN1218466C (en) | Method for controlling operation of switch reluctance motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20060705 |