CN103746596B - The output signal of topological structure is driven to turn off control method based on two pwm power - Google Patents
The output signal of topological structure is driven to turn off control method based on two pwm power Download PDFInfo
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Abstract
Drive the output signal of topological structure to turn off a control method based on two pwm power, belong to ultrasound electric machine power driving power supply field.It is characterized in that the gate drive signal G01=' 0 ', the G02=' 1 ' that make constant current-supplying PWM_POWER.Gate drive signal G03, G04 of coupling power PWM_DRIVE is made to be driven according to certain logical relation.The present invention can realize effectively turning off control to the output rudimental energy of ultrasound motor drive controller, makes ultrasound electric machine have better start and control characteristic.This invention plays key effect for the accurate control realizing the sub-rad level angular displacement of ultrasound electric machine and angular speed.
Description
Technical field
The present invention relates to a kind of ultrasonic motor control method, especially a kind of ultrasound electric machine power driving power supply technology, specifically a kind of output signal shutoff control method driving topological structure based on two pwm power.
Background technology
Compared with conventional motors, ultrasound electric machine has that the slow-speed of revolution, moment/mass ratio are large, fast response time, cut off self-lock, nanometer resolution, without features such as electromagnetic interference.
Ultrasound electric machine needs to provide the supersonic frequency of two-way quadrature phase to drive work by ultrasound motor drive controller.Such as: a kind of output stage of ultrasound electric machine that patent of invention " the two pwm power of a kind of ultrasound electric machine drives topological structure (November 13 2012 applying date; application number 201210451717.9) " is disclosed, what adopt is two pwm powers driving topological structures of constant current-supplying PWM_POWER and coupling power PWM_DRIVE two PWM assemblies, achieves the Orthogonal modification that output voltage is independent of each other mutually with output frequency.But, do not relate to and the method controlled turned off to the effective of output signal.After output signal turns off by ultrasound motor drive controller, its export resonance matching network remains with residual energy, still can exert an adverse impact to the start of ultrasound electric machine.So proposed by the invention drives the output signal of topological structure to turn off control method based on two pwm power, and the rudimental energy of output signal has carried out effective control, eliminates the harmful effect of rudimental energy to ultrasound electric machine thoroughly.
Summary of the invention
The object of the invention is to turn off control signal for the ultrasound electric machine of existing topological control structure to there is residual amount of energy and affect the problem of operation precision, invent and a kind ofly drive the output signal of topological structure to turn off control method based on two pwm power.
Technical scheme of the present invention is:
Drive the output signal of topological structure to turn off a control method based on two pwm power, it is characterized in that it comprises the following steps:
First, an a constant current-supplying PWM assembly PWM_POWER and coupling power PWM assembly PWM_DRIVE is set;
Secondly, make the gate drive signal G01=' 0 ' of the first power tube in constant current-supplying PWM assembly, the gate drive signal G02=' 1 ' of the second power tube, even the first power tube Q01 turns off, second power tube Q02 conducting, thus by inductor L0 and the second power tube Q02 for the rudimental energy turning off the transformer T0 that releases provides path of releasing;
3rd, the gate drive signal G03 of the 3rd power tube in coupling power PWM assembly and the gate drive signal G04 of the 4th power tube is made to be driven according to the logical relation of setting, to realize outputing signal the control turned off, reach the sub-angular displacement of rad level of ultrasound electric machine, the control of angular speed.
Make original signal frequency on the gate drive signal G04 of the gate drive signal G03 of the 3rd power tube and the 4th power tube constant, energy residual on transformer T0 was released by the time of setting.
Make the gate drive signal G04 of the gate drive signal G03 of the 3rd power tube and the 4th power tube be ' 0 ' level, allow energy residual on transformer T0 be released completely at once.
Described constant current-supplying PWM assembly is by the first power tube Q01, second power tube Q02 and inductor L0 forms, the drain electrode of the first power tube Q01 meets DC power anode VDD, the source electrode of the second power tube Q02 meets DC power cathode GND, the source electrode of the first power tube Q01 and the drain electrode of the second power tube Q02 connect into tests A point, first power tube Q01 accepts the control from the PWM drive singal G01 of its grid, second power tube Q02 accepts the control from the PWM drive singal G02 of its grid, make the gate drive signal that the gate drive signal G02 of the gate drive signal G01 of the first power tube Q01 and the second power tube Q02 is complementary in a pair.
Described coupling power PWM assembly is made up of the 3rd power tube Q03, the 4th power tube Q04, the first electric capacity C0, the second electric capacity C1 and transformer T0, and the 3rd power tube Q03, the 4th power tube Q04 and transformer T0 form transformer coupled formula push-pull circuit; The source electrode of the 3rd power tube Q03, the 4th power Q04 is all connected to DC power cathode GND; The drain electrode of the 3rd power tube Q03 connects the elementary top of transformer T0, and the drain electrode of the 4th power tube Q04 connects the elementary tail end of transformer T0, and the elementary center-side of transformer T0 receives the supply current from constant current-supplying PWM assembly; 3rd power tube Q03 accepts the control from the PWM drive singal G03 of its grid, 4th power tube Q04 accepts from its control of PWM drive singal G04 of grid, make the gate drive signal G04 of the gate drive signal G03 of the 3rd power tube and the 4th power tube gate drive signal complementary in a pair and driven according to the logical relation of setting, different turn-off characteristics can be realized;
The center terminal B of the supply current for receiving constant current-supplying PWM assembly that described transformer T0 is elementary is the current output terminal of constant current-supplying PWM assembly, is also the current input terminal of coupling power PWM assembly.
The invention has the beneficial effects as follows:
The present invention can realize effectively turning off control to the output rudimental energy of ultrasound motor drive controller, makes ultrasound electric machine have better start and control characteristic.
Invention can realize the accurate control of the sub-rad level angular displacement of ultrasound electric machine and angular speed.
Accompanying drawing explanation
Fig. 1 is the electric theory diagram that of the present invention pair of pwm power drives topological structure.
Fig. 2 is constant current-supplying PWM_POWER of the present invention electricity theory diagram.
Fig. 3 is coupling power PWM_DRIVE of the present invention electricity theory diagram.
In figure:
A is constant current-supplying PWM_POWER power supply test point.
B is constant current-supplying PWM_POWER current output terminal, is also the current input terminal of coupling power PWM_DRIVE.
Q01, Q02, Q03, Q04 are MOSFET power tube; G01, G02, G03, G04 are the PWM drive singal of MOSFET power tube grid; L0 is inductor; C0, C1 are capacitor; T0 is transformer; VDD is the positive pole of DC power supply; GND is the negative pole of DC power supply; OUT is the output drive end of coupling power assembly; COM is the output reference edge of coupling power assembly.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As Figure 1-3.
A kind of output signal shutoff control method driving topological structure based on two pwm power, its key is shilling gate drive signal G01=' 0 ', a G02=' 1 ' of constant current-supplying assembly PWM_POWER, then makes gate drive signal G03, G04 of coupling power assembly PWM_DRIVE be driven according to certain logical relation.As shown in Figure 1.Energy residual on T0 transformer can be made when keeping G03, G04 upper original signal frequency constant to be released by the time of setting, and the energy that T0 transformer remains when G03, G04 are ' 0 ' level in season, can be allowed to be released completely at once.
Details are as follows:
Of the present invention pair of pwm power drives topological structure to comprise constant current-supplying assembly PWM_POWER and coupling power assembly PWM_DRIVE two PWM assemblies, as shown in Figure 1.Constant current-supplying PWM_POWER power tube Q01, Q02 as shown in Figure 2 and inductor L0 form.Coupling power PWM_DRIVE power tube Q03, Q04, C0, C1 as shown in Figure 3 and transformer T0 form.
In constant current-supplying assembly PWM_POWER, the drain electrode of power tube Q01 meets DC power anode VDD, and the source electrode of power tube Q02 meets DC power cathode GND.Power tube Q01 source electrode and power tube Q02 drain and connect into test point A point.Power tube Q01 accepts the control from the PWM drive singal of grid G 01, and power tube Q02 accepts the control from the PWM drive singal of grid G 02.G01 and G02 is the gate drive signal of a pair complementation, makes G01=' 0 ', G02=' 1 ', i.e. power tube Q01 shutoff, power tube Q02 conducting.L0 inductor and power tube Q02 are the rudimental energy turning off T0 transformer of releasing, and provide the path of releasing.As shown in Figure 2.
In coupling power assembly PWM_DRIVE, power tube Q03, Q04 and transformer T0 form transformer coupled formula push-pull circuit.The source electrode of power tube Q03, Q04 is all connected to DC power cathode GND.Power tube Q03 drain electrode connects the elementary top of transformer T0, power tube Q04 drain electrode connects the elementary tail end of transformer T0, and the elementary center-side of transformer T0 receives the supply current of the constant current-supplying PWM_POWER inputted from B point.B point is constant current-supplying PWM_POWER current output terminal, is also the current input terminal of coupling power PWM_DRIVE.Power tube Q03 accepts the control from the PWM drive singal of grid G 03, and power tube Q04 accepts the control from the PWM drive singal of grid G 04.G03 and G04 is also the gate drive signal of a pair complementation, makes G03, G04 be driven according to certain logical relation, realizes different turn-off characteristics.As shown in Figure 3.
The present invention can realize soft switching and hard shutoff:
1, soft switching: keep the upper original signal frequency of G03, G04 constant, allow energy residual on T0 transformer, through B → L0 inductor → A point → power tube Q02 → GND, then according to the rhythm of original signal frequency, return T0 by Q03 or Q04 respectively, released by the regular hour.
2, firmly turn off: make G03, G04 be ' 0 ' level, allow energy residual on T0 transformer, through B point → L0 inductor → A point → power tube Q02 → GND, then return T0 via Q03 and Q04, released completely at once.
Above examples of implementation are only unrestricted for illustration of the present invention, although to invention has been detailed description, its object is to make one of skill in the art's easy understand.To amendment of the present invention and equivalent replacement, and do not depart from core technology of the present invention and scope thereof, all should be encompassed within claim of the present invention.
The part that the present invention does not relate to prior art that maybe can adopt same as the prior art is realized.
Claims (4)
1. drive the output signal of topological structure to turn off a control method based on two pwm power, it is characterized in that it comprises the following steps:
First, a constant current-supplying PWM assembly (PWM_POWER) and a coupling power PWM assembly (PWM_DRIVE) are set;
Secondly, make the gate drive signal G01=' 0 ' of the first power tube in constant current-supplying PWM assembly, the gate drive signal G02=' 1 ' of the second power tube, even the first power tube (Q01) turns off, second power tube (Q02) conducting, thus by inductor (L0) and the second power tube (Q02) for the release rudimental energy of transformer (T0) of shutoff provides path of releasing;
3rd, the gate drive signal (G03) of the 3rd power tube in coupling power PWM assembly and the gate drive signal (G04) of the 4th power tube is made to be driven according to the logical relation of complementation, to realize outputing signal the control turned off, reach the sub-angular displacement of rad level of ultrasound electric machine, the control of angular speed, described constant current-supplying PWM assembly is by the first power tube (Q01), second power tube (Q02) and inductor (L0) composition, the drain electrode of the first power tube (Q01) connects DC power anode (VDD), the source electrode of the second power tube (Q02) connects DC power cathode (GND), the source electrode of the first power tube (Q01) and the drain electrode of the second power tube (Q02) connect into tests A point, first power tube (Q01) accepts the control from the PWM drive singal (G01) of its grid, second power tube (Q02) accepts the control from the PWM drive singal (G02) of its grid, make the gate drive signal that the gate drive signal (G02) of the gate drive signal (G01) of the first power tube (Q01) and the second power tube (Q02) is complementary in a pair, described coupling power PWM assembly is made up of the 3rd power tube (Q03), the 4th power tube (Q04), the first electric capacity (C0), the second electric capacity (C1) and transformer (T0), and the 3rd power tube (Q03), the 4th power tube (Q04) and transformer (T0) form transformer coupled formula push-pull circuit, the source electrode of the 3rd power tube (Q03), the 4th power (Q04) is all connected to DC power cathode GND, the drain electrode of the 3rd power tube (Q03) connects the elementary top of transformer (T0), and the drain electrode of the 4th power tube (Q04) connects the elementary tail end of transformer (T0), and the elementary center-side of transformer (T0) receives the supply current from constant current-supplying PWM assembly, 3rd power tube (Q03) accepts the control from the PWM drive singal (G03) of its grid, 4th power tube (Q04) accepts from its control of PWM drive singal (G04) of grid, make the gate drive signal (G04) of the gate drive signal (G03) of the 3rd power tube and the 4th power tube gate drive signal complementary in a pair and driven according to the logical relation of setting, different turn-off characteristics can be realized.
2. drive the output signal of topological structure to turn off control method based on two pwm power according to claim 1, it is characterized in that on the gate drive signal (G03) of the 3rd power tube and the gate drive signal (G04) of the 4th power tube, original signal frequency is constant, make the upper residual energy of transformer (T0), released by the time of setting.
3. drive the output signal of topological structure to turn off control method based on two pwm power according to claim 1, it is characterized in that making the gate drive signal (G03) of the 3rd power tube and the gate drive signal (G04) of the 4th power tube be ' 0 ' level, allow the upper residual energy of transformer (T0) be released completely at once.
4. drive the output signal of topological structure to turn off control method based on two pwm power according to claim 1, it is characterized in that the center end points (B) of the supply current for receiving constant current-supplying PWM assembly that transformer (T0) is elementary is the current output terminal of constant current-supplying PWM assembly, is also the current input terminal of coupling power PWM assembly.
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| CN110289784B (en) * | 2019-07-09 | 2022-03-08 | 南京航达超控科技有限公司 | Single-phase pulse speed regulation control method based on double-PWM power driving topological structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11225473A (en) * | 1998-02-06 | 1999-08-17 | Nagano Japan Radio Co | Power supply |
| CN102983776A (en) * | 2012-11-13 | 2013-03-20 | 南京航空航天大学 | Ultrasonic motor dual pulse-width modulation (PWM) power drive topological structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11225473A (en) * | 1998-02-06 | 1999-08-17 | Nagano Japan Radio Co | Power supply |
| CN102983776A (en) * | 2012-11-13 | 2013-03-20 | 南京航空航天大学 | Ultrasonic motor dual pulse-width modulation (PWM) power drive topological structure |
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