CN109842332A - A kind of control method of the five phase step motor of new pentagon connection - Google Patents

A kind of control method of the five phase step motor of new pentagon connection Download PDF

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Publication number
CN109842332A
CN109842332A CN201910237208.8A CN201910237208A CN109842332A CN 109842332 A CN109842332 A CN 109842332A CN 201910237208 A CN201910237208 A CN 201910237208A CN 109842332 A CN109842332 A CN 109842332A
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phase
step motor
current
phase step
voltage
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CN109842332B (en
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赖九才
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Shenzhen Ruitech Mechanical And Electrical Technology Co ltd
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Shenzhen Keen Electromechanical Technology Co Ltd
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Abstract

The present invention discloses newly a kind of control method of the five phase step motor of new pentagon connection, it is calculated nearest four-vector algorithm is carried out using the two-phase voltage obtained after PI control to constant current, obtain the size of four voltage vectors, to obtain the corresponding PWM duty cycle of five half-bridges, machine winding finally is outputed current to via five phase half-bridge drivers, the winding of the five phase step motor uses new pentagon connection.The present invention generates the SVPWM waveform of five half-bridges using Near four vectors SVPWM algorithm, it can be realized the micro-stepping control of five phase step motor, the DC bus-bar voltage utilization rate of five phase voltage source inventers is improved, harmonic component contained in output phase voltage is reduced, is conducive to the reduction of vibration.

Description

A kind of control method of the five phase step motor of new pentagon connection
Technical field
The present invention relates to drive and control of electric machine technology, in particular to a kind of control of the five phase step motor of new pentagon connection Method processed.
Background technique
In equipment manufacture, high-precision, low vibration become the important indicator of an equipment, drive and control of electric machine technology hair The direction of exhibition directly determines that the technological development direction of equipment manufacturing industry, drive and control of electric machine technical level also directly determine The technical level of equipment manufacturing industry and its downstream industry.
Country's Five Phase Step Motor Driver is predominantly built using special chip at present, and performance relatively falls behind, and flexibility is poor. Five phase step actuator market of high-performance is mainly that Japan Oriental motor (Oriental motor) company occupies, due to having property Absolute predominance on energy, price are extremely expensive.Domestic step actuator manufacturer focuses primarily upon control technology level lower two Phase, three-phase stepper motor can not provide high-performance five phase step motor product.
Five phase step motor is driven, the mode of connection mainly has at present: starriness connection, pentagon connection and new five side Shape connection (pentagon connection).Star connection is easily controllable, but the utilization rate of voltage is low, and high speed performance is poor;Pentagon connection, Control is simple, and high speed performance is preferable, is mainly used for half step, synchronizing control;New pentagon connection, control algolithm is complicated, with small vibration, High speed performance is preferable.
Existing five mix formula stepper motor driver is built using external special chip, be typically only capable to carry out synchronizing, Half step operation can not can not play the maximum of five phase step motor for the adjustment that the different use environment of motor is responded Performance.
Five phase step motor control core be five phase voltage source inventers (voltage source inverter, VSI SVPWM algorithm) is closed if only the algorithm of three-phase bridge is expanded to Wu Xiangqiao using two nearest voltage vectors At voltage vector, great harmonic wave is will be present in motor, causes to shake larger.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of control of the five phase step motor of new pentagon connection Method.
To achieve the above object, concrete scheme of the invention is as follows:
A kind of control method of the five phase step motor of new pentagon connection, which is characterized in that PI will be used to constant current The two-phase voltage obtained after control carries out nearest four-vector algorithm and calculates, and the size of four voltage vectors is obtained, to obtain five The corresponding PWM duty cycle of a half-bridge finally outputs current to machine winding, the five phases stepping electricity via five phase half-bridge drivers The winding of machine uses new pentagon connection.
Preferably, this method further includes current feedback, the current feedback by acquisition five phase step motor in five around The electric current of group, extends to five phases for clark transform method, five phase currents is then converted to two phase feedback currents.
Preferably, described to constant current and feedback current is biphase current under rectangular coordinate system, the two-phase voltage For the two-phase voltage under rectangular coordinate system.
Preferably, the five phases half-bridge driver is the digital driver based on DSP, including 10 power MOSFET structures Five half-bridge circuits built, five half-bridge circuits are separately connected a node of motor pentagon winding.
Using technical solution of the present invention, have the advantages that
For the five phase step motor of new pentagon connection, converted by the Clark of extension by the electricity of five phase step motor Flow control is converted to the equivalent two phase winding control of rectangular coordinate system, generates five half-bridges using Near four vectors SVPWM algorithm SVPWM waveform, can be realized the micro-stepping control of five phase step motor, improve five phase voltage source inventers DC bus electricity Utilization rate is pressed, harmonic component contained in output phase voltage is reduced, is conducive to the reduction of vibration.
Detailed description of the invention
Fig. 1 is the space vector of voltage Distribution Principle figure of five phase half-bridges of the invention;
Fig. 2 is the nearest two vector operations schematic diagram of the present invention;
Fig. 3 is present invention four-vector algorithm principle figure recently;
Fig. 4 is control method block diagram of the present invention;
Fig. 5 is drive circuit schematic diagram of the present invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Referring to Fig. 4, the present invention provides a kind of control method of the five phase step motor of new pentagon connection, and feature exists In the two-phase voltage obtained after being controlled to constant current using PI is carried out nearest four-vector algorithm and calculated, and four voltages arrows will be obtained The size of amount finally outputs current to motor via five phase half-bridge drivers to obtain the corresponding PWM duty cycle of five half-bridges The winding of winding, the five phase step motor uses new pentagon connection.
This method further includes current feedback, the electricity that the current feedback passes through five windings in acquisition five phase step motor Stream, extends to five phases for clark transform method, five phase currents is then converted to two phase feedback currents.
Described to constant current and feedback current is biphase current under rectangular coordinate system, and the two-phase voltage is that right angle is sat Two-phase voltage under mark system.
Referring to Fig. 5, the five phases half-bridge driver is the digital driver based on DSP, including 10 power MOSFET Five half-bridge circuits of building, five half-bridge circuits are separately connected a node of motor pentagon winding.
The operation principle of the present invention is that:
Five phase step motor control core be five phase voltage source inventers (voltage source inverter, VSI SVPWM algorithm), due to the inverter of 5 half-bridge MOSFET composition, up to 32 kinds, corresponding space vector divides for switch combination Butut is as shown in Figure 1.Usual two vector operation synthesizes required voltage vector, such as Fig. 2 using maximum neighboring voltage vector It is shown.
The nearest four-vector synthesizes required voltage vector with two intermediate vectors using maximum two, such as Fig. 3 institute Show.
Control method realizes that block diagram is as shown in Figure 4, in which:
Given value of current: Ia=Ipeak*cos (Θ), Ib=Ipeak*sin (Θ);
Current feedback: electric current IA~IB by acquiring 5 windings of five phase step motor extends clark transform method To five phases, five phase current IA~IB are converted to two-phase rectangular co-ordinate, obtain biphase current feedback Ialpha, Ibeta;
Current control is controlled using PI: after PI controller, the two-phase voltage obtained under rectangular co-ordinate is given Valpha, Vbeta;
Nearest four-vector algorithm: the vector section where foundation Valpha, Vbeta in Fig. 3, using maximum two vectors The size of 4 vectors is calculated, to obtain five and half according to the linear decomposition method of vector with two intermediate vectors The corresponding PWM duty cycle of bridge voltage VA~VE;
Finally machine winding is outputed current to via 5 phase half-bridge circuits.
As shown in figure 5, the digital Five Phase Step Motor Driver based on DSP, passes through 10 power MOSFET buildings five A half-bridge circuit realizes five phases in the electric current loop of five phase winding of DSP internal build in conjunction with space vector pulse width modulation (SVPWM) The high-performance Multi-level microstep of stepper motor.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly It is included in protection scope of the present invention in other related technical areas.

Claims (4)

1. a kind of control method of the five phase step motor of new pentagon connection, which is characterized in that will be controlled to constant current using PI The two-phase voltage obtained after system carries out nearest four-vector algorithm and calculates, and the size of four voltage vectors is obtained, to obtain five The corresponding PWM duty cycle of half-bridge finally outputs current to machine winding, the five phase step motor via five phase half-bridge drivers Winding use new pentagon connection.
2. the control method of the five phase step motor of new pentagon connection according to claim 1, which is characterized in that the party Method further includes current feedback, and the current feedback is converted clark by the electric current of five windings in acquisition five phase step motor Method extends to five phases, and five phase currents are then converted to two phase feedback currents.
3. the control method of the five phase step motor of new pentagon connection according to claim 2, which is characterized in that described To the biphase current that constant current and feedback current are under rectangular coordinate system, the two-phase voltage is the two-phase under rectangular coordinate system Voltage.
4. the control method of the five phase step motor of new pentagon connection according to claim 1, which is characterized in that described Five phase half-bridge drivers are the digital drivers based on DSP, five half-bridge circuits including 10 power MOSFET building, five A half-bridge circuit is separately connected a node of motor pentagon winding.
CN201910237208.8A 2019-03-27 2019-03-27 Control method of novel pentagonal connection five-phase stepping motor Active CN109842332B (en)

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CN201910237208.8A CN109842332B (en) 2019-03-27 2019-03-27 Control method of novel pentagonal connection five-phase stepping motor

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CN201910237208.8A CN109842332B (en) 2019-03-27 2019-03-27 Control method of novel pentagonal connection five-phase stepping motor

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06319294A (en) * 1993-09-10 1994-11-15 Nippon Parusumootaa Kk Five-phase stepping motor
JP2000324894A (en) * 1999-05-17 2000-11-24 Brother Ind Ltd Driver for 5-phase stepping motor
CN103715973A (en) * 2014-01-03 2014-04-09 天津大学 Space voltage vector pulse width modulation algorithm of five-phase voltage source inverter bridge
CN103731055A (en) * 2014-01-20 2014-04-16 东南大学 Simplified three-level space vector modulation method
CN105119547A (en) * 2015-09-08 2015-12-02 江苏大学 Full-vector control method of five-phase fault-tolerant permanent magnet motor
CN106787918A (en) * 2017-01-16 2017-05-31 南京航空航天大学 A kind of random SVPWM method of Five-phase inverter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06319294A (en) * 1993-09-10 1994-11-15 Nippon Parusumootaa Kk Five-phase stepping motor
JP2000324894A (en) * 1999-05-17 2000-11-24 Brother Ind Ltd Driver for 5-phase stepping motor
CN103715973A (en) * 2014-01-03 2014-04-09 天津大学 Space voltage vector pulse width modulation algorithm of five-phase voltage source inverter bridge
CN103731055A (en) * 2014-01-20 2014-04-16 东南大学 Simplified three-level space vector modulation method
CN105119547A (en) * 2015-09-08 2015-12-02 江苏大学 Full-vector control method of five-phase fault-tolerant permanent magnet motor
CN106787918A (en) * 2017-01-16 2017-05-31 南京航空航天大学 A kind of random SVPWM method of Five-phase inverter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
高宏伟 等: "五相电压源逆变器的空间矢量脉宽调制方法研究", 《中国电机工程学报》 *

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