CN1543052A - High-low voltage driving method for improving piezoelectric ultrasonic motor stepping resolution ratio and reducing driving energy consumption - Google Patents
High-low voltage driving method for improving piezoelectric ultrasonic motor stepping resolution ratio and reducing driving energy consumption Download PDFInfo
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- CN1543052A CN1543052A CNA2003101031634A CN200310103163A CN1543052A CN 1543052 A CN1543052 A CN 1543052A CN A2003101031634 A CNA2003101031634 A CN A2003101031634A CN 200310103163 A CN200310103163 A CN 200310103163A CN 1543052 A CN1543052 A CN 1543052A
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Abstract
This invention discloses a high and low voltage driving method for increasing piezo supersonic motor step resolution based on the character that the barrier voltage maintaining the operation of the motor is lower than that of starting. Different driving voltages to the uniform electrodes of piezo ceramics at different time intervals are controlled to reduce the influence of the tail wave effect brought by high start barrier voltage to the brake. Test shows that the step angle increases from the smallest 1 minute 15 angle seconds by ordinary drive to the smallest 23 angle seconds from the high-low voltage drive and the step resolution increases more than two times. This method extends to big step and continuous control, so that low voltage drive is applied at work to reduce energy cost.
Description
Technical field
The invention belongs to piezoelectric ultrasound motor control technology field, particularly a kind of high-low pressure driving method that improves the step resolution of piezoelectric ultrasound motor and reduce energy consumption.
Background technology
Piezoelectric ultrasound motor has high displacement resolution and characteristics such as big moment, the slow-speed of revolution, is a kind of high rigidity, high response speed, high-precision next-generation drive that can directly drive load.It can constitute high confining force, and the transmission system of low noise realizes miniaturization and intellectuality easily.So piezoelectric ultrasound motor is in the fields such as travel mechanism, transmission system and robot of precision optical machinery, measuring instrument, application prospect is boundless.
For piezoelectric ultrasound motor, a sill voltage is arranged, use the high-frequency drive power supply be higher than this sill voltage could drive piezoelectric ultrasound motor, it is then low than this sill voltage to keep the piezoelectric ultrasound motor needed magnitude of voltage that turns round; To improve the high frequency characteristics of piezoelectric ultrasound motor driver in addition, just must improve conducting phase current forward position, just must fall the electric charge that fills in supersonic motor by rapid release and will make supersonic motor can get back to halted state fast, voltage is too high, phase current is inevitable very big at the beginning, it is also corresponding slow to discharge electric charge speed, and the coda wave of high pressure is disadvantageous for the braking of piezoelectric ultrasound motor in addition; In addition, the step angle of a minimum is arranged for piezoelectric ultrasound motor, this step angle is relevant with motor rotor material, relevant with the motor pretightning force, relevant with temperature, also relevant with driving, at present in the world seldom, and just still less to the research at minimum step angle to the research of ultrasonic step motor; In addition, the driving energy consumption of piezo-electric motor is relevant with the voltage that is provided, and is relevant with the duration of voltage.The present invention just is being based on a kind of method that improves step resolution of the type of drive proposition of ultrasonic motor, and this method is applied in piezoelectric ultrasound motor can reach the purpose that reduces energy consumption under the occasion of stepping and continuous operation greatly continuously.
Summary of the invention
The purpose of this invention is to provide a kind of high-low pressure driving method that improves the piezoelectric ultrasound motor step resolution and reduce the driving energy consumption, it is characterized in that: described high-low pressure driving method carries out in two steps: the driving of first-phase uses the voltage U h that is greater than or equal to sill voltage to drive, and driving time is T
1Reduce the voltage to then Ul and drive, driving time is T
2Second-phase then uses low-voltage Ul to drive, and driving time is T3,
Specify as follows:
Its power supply timing is for improving step resolution
First-phase: by the pulse high level that B, C come, open simultaneously Q1, Q2, end because D2 is anti-phase, so Ul does not power, and only have the Uh power supply, the time is T1, and the A point is low level, and Q3 ends; After B, the C point DC pulse, B point step-down level, Q1 ends, and the C point becomes the pulse input, Ul power supply this moment, the time is T2; Second-phase A point then becomes the pulse of phase lag C point 90 degree, and the time is T3; Regulate driving time T1, T2, T3 can realize improving step resolution.
The invention has the beneficial effects as follows in the different time periods to add different voltage, reduced the adverse effect of coda wave effect that high startup sill voltage brings braking; Can obtain than only using the lower step angle of univoltage Uh power supply.The step resolution that obtains is than using the resulting step resolution of conventional method to improve more than 2 times.
For the motion of big step angle, regulate suitable T1, T2 and T3, make to be low-voltage Ul driving in main driving time T2, T3 time, thereby reach the purpose that reduces energy consumption.
For continuous motion, T2 and T3 are got final product time of continuous motion, equally also when continuous motion, adopt low pressure Ul to drive and reach the purpose that reduces energy consumption.
Description of drawings
Fig. 1 drives the power supply circuits schematic diagram of piezoelectric ultrasound motor for high-low pressure.
Fig. 2 is a piezoelectric ultrasound motor high-low pressure driving voltage sequential schematic diagram.
Embodiment
The present invention improves the piezoelectric ultrasound motor step resolution and reduces the high-low pressure driving method that drives energy consumption for a kind of.Described high-low pressure driving method carries out in two steps: the driving of first-phase uses the voltage U h that is greater than or equal to sill voltage to drive, and driving time is T
1The alternating voltage Ul that is lower than sill voltage U h with alternating voltage mean value then drives, and driving time is T
2Second-phase then uses voltage U l to drive, and driving time is T3, is described as follows:
Its sequential is as shown in Figure 1 and Figure 2 for improving step resolution:
After first-phase: B, the C point DC pulse, B point step-down level, Q1 ends, and the C point becomes the pulse input, Ul power supply this moment, the time is T2; Second-phase A point then becomes the pulse of phase lag C point 90 degree, and the time is T3; Regulate driving time T1, T2, T3 can realize improving step resolution.
For the motion of big step angle, regulate suitable T1, T2 and T3, make to be low-voltage Ul driving in main driving time T2, T3 time, thereby reach the purpose that reduces energy consumption.
For continuous motion, T2 and T3 are got final product time of continuous motion, equally also when continuous motion, adopt low pressure Ul to drive and reach the purpose that reduces energy consumption.
Employed D1, D2, D3 are fast recovery diode, be beneficial to the release of electric charge under the high-frequency work situation, L1, L2 are the coupling inductance, the motor that adopted of experiment be the head-swinging type ultrasonic motor as experiment, 15 rads of experimental result step angles 1 minute from minimum step angle that common driving obtains are brought up to high-low pressure and are driven 23 rads at the minimum step angle that obtains.
Claims (1)
1. one kind is improved the piezoelectric ultrasound motor step resolution and reduces the high-low pressure driving method that drives energy consumption, it is characterized in that: described high-low pressure driving method carries out in two steps: the driving of first-phase uses the voltage U h that is greater than or equal to sill voltage to drive, and driving time is T
1Reduce the voltage to then Ul and drive, driving time is T
2Second-phase then uses low-voltage Ul to drive, and driving time is T3, is described as follows:
Its power supply timing is for improving step resolution:
First-phase: by the pulse high level that B, C come, open simultaneously Q1, Q2, end because D2 is anti-phase, so Ul does not power, and only have the Uh power supply, the time is T1, and the A point is low level, and Q3 ends; After B, the C point DC pulse, B point step-down level, Q1 ends, and the C point becomes the pulse input, Ul power supply this moment, the time is T2; Second-phase A point then becomes the pulse of phase lag C point 90 degree, and the time is T3; Regulate driving time T1, T2, T3 can realize improving step resolution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310103163 CN1543052B (en) | 2003-11-06 | 2003-11-06 | High-low voltage driving method for improving piezoelectric ultrasonic motor stepping resolution ratio and reducing driving energy consumption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310103163 CN1543052B (en) | 2003-11-06 | 2003-11-06 | High-low voltage driving method for improving piezoelectric ultrasonic motor stepping resolution ratio and reducing driving energy consumption |
Publications (2)
| Publication Number | Publication Date |
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| CN1543052A true CN1543052A (en) | 2004-11-03 |
| CN1543052B CN1543052B (en) | 2010-04-28 |
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| CN 200310103163 Expired - Fee Related CN1543052B (en) | 2003-11-06 | 2003-11-06 | High-low voltage driving method for improving piezoelectric ultrasonic motor stepping resolution ratio and reducing driving energy consumption |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897443B (en) * | 2005-07-11 | 2010-08-25 | 三星电机株式会社 | Piezo actuator driving circuit |
| CN104022682A (en) * | 2014-06-25 | 2014-09-03 | 哈尔滨工业大学 | Cross-scale driving method of foot-type piezoelectric driver with composite bending-vibration mode |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86202716U (en) * | 1986-04-30 | 1986-12-10 | 周宁 | High-low voltage power for driving step motor |
| JP2002064977A (en) * | 2000-08-21 | 2002-02-28 | Matsushita Electric Ind Co Ltd | Method of driving pezoelectric transformer and power supply |
| CN1141783C (en) * | 2001-12-14 | 2004-03-10 | 清华大学 | Three-dimension self-support swing type high-precision step piezoelectric ultrasonic motor and driving system |
| CN1258865C (en) * | 2002-03-15 | 2006-06-07 | 清华大学 | Plume type ultrasonic motor drive power supply with wide frequencies and high step accuracy |
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2003
- 2003-11-06 CN CN 200310103163 patent/CN1543052B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897443B (en) * | 2005-07-11 | 2010-08-25 | 三星电机株式会社 | Piezo actuator driving circuit |
| CN104022682A (en) * | 2014-06-25 | 2014-09-03 | 哈尔滨工业大学 | Cross-scale driving method of foot-type piezoelectric driver with composite bending-vibration mode |
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| Publication number | Publication date |
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| CN1543052B (en) | 2010-04-28 |
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Granted publication date: 20100428 Termination date: 20121106 |