CN103746596A - Output signal shutoff control method based on dual-PWM (pulse-width modulation) power drive topological structure - Google Patents
Output signal shutoff control method based on dual-PWM (pulse-width modulation) power drive topological structure Download PDFInfo
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Abstract
The invention discloses an output signal shutoff control method based on a dual-PWM (pulse-width modulation) power drive topological structure, and relates to the field of ultrasonic motor power drive powers. The output signal shutoff control method is characterized in that gate drive signals G01 and G02 of a constant-current supply PWM_POWER are enabled to be respectively equal to 0 and 1. Gate drive signals G03 and G04 of a power coupler PWM_DRIVE are driven according to a certain logical relationship. According to the output signal shutoff control method disclosed by the invention, effective shutoff control can be realized on the output residual energy of an ultrasonic motor drive controller, so that an ultrasonic motor is better in actuation and control characteristic. The output signal shutoff control method disclosed by the invention plays a key role in accurate control of sub-arc-second angular displacement and angular speed of the ultrasonic motor.
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 that drives topological structure based on two pwm powers.
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 need to provide the supersonic frequency of two-way quadrature phase to carry out driving work by ultrasound motor drive controller.For example: a kind of output stage of ultrasound electric machine that patent of invention " the two pwm powers of a kind of ultrasound electric machine drive topological structure (November 13 2012 applying date; application number 201210451717.9) " is disclosed, what adopt is two pwm powers driving topological structures of two PWM assemblies of constant current-supplying PWM_POWER and power coupling PWM_DRIVE, has realized the Orthogonal modification that output voltage and output frequency are independent of each other mutually.But, do not relate to the method for the effective shutoff control to output signal.After ultrasound motor drive controller turn-offs output signal, 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 powers, the rudimental energy of output signal has carried out effective control, has eliminated thoroughly the harmful effect of rudimental energy to ultrasound electric machine.
Summary of the invention
The object of the invention is to turn-off that control signal exists residual amount of energy and the problem that affects operation precision for the ultrasound electric machine of existing topological control structure, invent and a kind ofly based on two pwm powers, drive the output signal of topological structures to turn-off control method.
Technical scheme of the present invention is:
Based on two pwm powers, drive the output signal of topological structure to turn-off a control method, it is characterized in that it comprises the following steps:
First, a constant current-supplying PWM assembly PWM_POWER and a power coupling 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 turn-offs, the second power tube Q02 conducting, thus by inductor L0 and the second power tube Q02, provide the path of releasing for the rudimental energy that turn-offs the transformer T0 that releases;
The 3rd, make the gate drive signal G03 of the 3rd power tube and the gate drive signal G04 of the 4th power tube in power coupling PWM assembly be driven according to the logical relation of setting, the control of turn-offing to realize output signal, reaches the angular displacement to the sub-rad level of ultrasound electric machine, the control of angular speed.
Make the upper original signal frequency of the gate drive signal G03 of the 3rd power tube and the gate drive signal G04 of the 4th power tube constant, the upper residual energy of transformer T0 was released by the time of setting.
Make 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.
Described constant current-supplying PWM assembly is by the first power tube Q01, the second power tube Q02 and inductor L0 composition, 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 drain electrode of the source electrode of the first power tube Q01 and the second power tube Q02 connects into test A point, the first power tube Q01 accepts to drive from the PWM of its grid the control of signal G01, the second power tube Q02 accepts to drive from the PWM of its grid the control of signal G02, make the gate drive signal G01 of the first power tube Q01 become the gate drive signal of a pair of complementation with the gate drive signal G02 of the second power tube Q02.
Described power coupling PWM assembly is comprised of the 3rd power tube Q03, the 4th power tube Q04, the first capacitor C 0, the second capacitor C 1 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; The 3rd power tube Q03 accepts to drive from the PWM of its grid the control of signal G03, the 4th power tube Q04 accepts to drive from its PWM of grid the control of signal G04, make the gate drive signal G03 of the 3rd power tube become the gate drive signal of a pair of complementation with the gate drive signal G04 of the 4th power tube and be driven according to the logical relation of setting, can realize different turn-off characteristics;
The elementary center terminal B for the supply current that receives constant current-supplying PWM assembly of described transformer T0 is the current output terminal of constant current-supplying PWM assembly, is also the current input terminal of power coupling PWM assembly.
The invention has the beneficial effects as follows:
The present invention can realize effectively and turn-off and control 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 electricity theory diagram of the present invention.
Fig. 3 is power coupling PWM_DRIVE electricity theory diagram of the present invention.
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 power coupling PWM_DRIVE.
Q01, Q02, Q03, Q04 are MOSFET power tube; G01, G02, G03, G04 are that the PWM of MOSFET power tube grid drives signal; 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 power coupling assembly; COM is the output reference edge of power coupling 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 that drives topological structure based on two pwm powers, 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, the G04 of power coupling assembly PWM_DRIVE be driven according to certain logical relation.As shown in Figure 1.When keeping G03, G04 upper original signal frequency constant, can make energy residual on T0 transformer be released by the time of setting, and can allow when G03, G04 are ' 0 ' level in season residual energy on T0 transformer 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 two PWM assemblies of power coupling assembly PWM_DRIVE, as shown in Figure 1.Constant current-supplying PWM_POWER power tube Q01, Q02 and inductor L0 composition as shown in Figure 2.Power coupling PWM_DRIVE power tube Q03, Q04, C0, C1 and transformer T0 composition as shown in Figure 3.
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 electrode connect into test point A point.Power tube Q01 accepts to drive from the PWM of grid G 01 control of signal, and power tube Q02 accepts to drive from the PWM of grid G 02 control of signal.G01 and G02 are the gate drive signals of a pair of complementation, make G01=' 0 ', G02=' 1 ', i.e. power tube Q01 shutoff, power tube Q02 conducting.L0 inductor and power tube Q02 are the rudimental energy that turn-offs the T0 transformer of releasing, and the path of releasing is provided.As shown in Figure 2.
In power coupling 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 from the constant current-supplying PWM_POWER of B point input.B point is constant current-supplying PWM_POWER current output terminal, is also the current input terminal of power coupling PWM_DRIVE.Power tube Q03 accepts to drive from the PWM of grid G 03 control of signal, and power tube Q04 accepts to drive from the PWM of grid G 04 control of signal.G03 and G04 are also the gate drive signals of a pair of complementation, make G03, G04 be driven according to certain logical relation, realize different turn-off characteristics.As shown in Figure 3.
The present invention can realize soft shutoff and hard shutoff:
1, soft shutoff: keep the upper original signal frequency of G03, G04 constant, allow residual energy on T0 transformer, through B → L0 inductor → A point → power tube Q02 → GND, then according to the rhythm of original signal frequency, by Q03 or Q04, return to T0 respectively, by the regular hour, released.
2, firmly turn-off: make G03, G04 be ' 0 ' level, allow residual energy on T0 transformer, through B point → L0 inductor → A point → power tube Q02 → GND, then return to T0 via Q03 and Q04, released completely at once.
Above examples of implementation are only for illustrating that the present invention is and unrestricted, although the present invention is had been described in detail, its object is to make one of skill in the art easily to understand.To modification of the present invention and equivalent replacement, and do not depart from core technology of the present invention and scope thereof, within all should being encompassed in 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 (6)
1. based on two pwm powers, drive the output signal of topological structure to turn-off a control method, it is characterized in that it comprises the following steps:
First, a constant current-supplying PWM assembly (PWM_POWER) and a power coupling 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) turn-offs, the second power tube (Q02) conducting, thus by inductor (L0) and the second power tube (Q02), be that the rudimental energy that turn-offs the transformer (T0) of releasing provides the path of releasing;
The 3rd, make the gate drive signal (G03) of the 3rd power tube and the gate drive signal (G04) of the 4th power tube in power coupling PWM assembly be driven according to the logical relation of setting, the control of turn-offing to realize output signal, reaches the angular displacement to the sub-rad level of ultrasound electric machine, the control of angular speed.
2. based on two pwm powers, drive the output signal of topological structure to turn-off control method according to claim 1, it is characterized in that the upper original signal frequency of the gate drive signal (G03) of the 3rd power tube and the gate drive signal (G04) of the 4th power tube is constant, make the upper residual energy of transformer (T0), by the time of setting, released.
3. based on two pwm powers, drive the output signal of topological structure to turn-off control method 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 to be ' 0 ' level, allow the upper residual energy of transformer (T0) be released completely at once.
4. based on two pwm powers, drive the output signal of topological structure to turn-off control method according to claim 1, it is characterized in that described constant current-supplying PWM assembly is by the first power tube (Q01), the 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 drain electrode of the source electrode of the first power tube (Q01) and the second power tube (Q02) connects into test A point, the first power tube (Q01) accepts to drive from the PWM of its grid the control of signal (G01), the second power tube (Q02) accepts to drive from the PWM of its grid the control of signal (G02), make the gate drive signal (G01) of the first power tube (Q01) and the gate drive signal (G02) of the second power tube (Q02) become the gate drive signal of a pair of complementation.
5. based on two pwm powers, drive the output signal of topological structure to turn-off control method according to claim 1, it is characterized in that described power coupling PWM assembly is comprised of the 3rd power tube (Q03), the 4th power tube (Q04), the first electric capacity (C0), the second electric capacity (C1) and transformer (T0), 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; The 3rd power tube (Q03) accepts to drive from the PWM of its grid the control of signal (G03), the 4th power tube (Q04) accept from grid its PWM drive signal (G04) control, make the gate drive signal (G03) of the 3rd power tube and the gate drive signal (G04) of the 4th power tube become the gate drive signal of a pair of complementation and driven according to the logical relation of setting, can realize different turn-off characteristics.
6. according to driving the output signal of topological structure to turn-off control method based on two pwm powers described in claim 1 or 5, it is characterized in that the elementary center end points (B) for the supply current that receives constant current-supplying PWM assembly of transformer (T0) is the current output terminal of constant current-supplying PWM assembly, is also the current input terminal of power coupling PWM assembly.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289784A (en) * | 2019-07-09 | 2019-09-27 | 南京航大超控科技有限公司 | Monophasic pulses if method for controlling speed regulation based on double pwm powers 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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Patent 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289784A (en) * | 2019-07-09 | 2019-09-27 | 南京航大超控科技有限公司 | Monophasic pulses if method for controlling speed regulation based on double pwm powers driving topological structure |
| 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 |
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