CN201663562U - Ultrasonic motor driving control circuit and system thereof - Google Patents
Ultrasonic motor driving control circuit and system thereof Download PDFInfo
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- CN201663562U CN201663562U CN2010201004990U CN201020100499U CN201663562U CN 201663562 U CN201663562 U CN 201663562U CN 2010201004990 U CN2010201004990 U CN 2010201004990U CN 201020100499 U CN201020100499 U CN 201020100499U CN 201663562 U CN201663562 U CN 201663562U
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Abstract
The utility model discloses an ultrasonic motor driving control circuit and a system thereof. The ultrasonic motor driving control circuit comprises a driving signal generation circuit and a control signal generation circuit, wherein the output terminal of the driving signal generation circuit is connected with a phase-shifting circuit, the output terminal of the phase-shifting circuit is connected with a data-selecting control circuit, the output terminal of the data-selecting control circuit is connected with a power amplifying circuit, the output terminal of the power amplifying circuit is connected with a voltage regulating and impedance matching circuit, the output terminal of the control signal generation circuit is connected with a digital duty ratio regulating circuit, and the output terminal of the digital duty ratio regulating circuit is connected with the input terminal of the data-selecting control circuit. The ultrasonic motor driving control circuit is compact in structure, integrative and high in integration level; after modularization, both the versatility and the replaceability of the ultrasonic motor driving control circuit are enhanced, and the application and the popularization of the ultrasonic motor are convenient; and the ultrasonic motor driving control circuit with excellent performance and the system thereof are widely applied to the transmission control field.
Description
Technical field
The utility model relates to a kind of Drive and Control Circuit and a kind of driving control system, particularly a kind of system that has the traveling-wave ultrasonic motor driving control circuit of digital pulse width modulation interface and utilize this control circuit.
Background technology
Ultrasonic motor (Ultrasonic Motor) is called piezo-electric motor or ultrasonic motor again, and the English USM that is called for short is an inverse piezoelectric effect of utilizing piezoelectric, and electric energy is converted into mechanical vibrational energy, and a kind of next-generation drive that relies on frictional force to drive.Ultrasonic motor is divided into two kinds of traveling-wave ultrasonic motor and standing-wave supersonic motors, is applied in numerous areas such as optical precision instrument, micromechanics, robot, fluid measurement and medicine equipment at present.
At present, still there are not modularization and commercial ultrasonic motor general driving controller, because ultrasonic motor belongs to novel driving device, drive controlling at ultrasonic motor also is in the more elementary and backward stage, its Drive Control Technique is still needed and is addressed the problem: (1) drive circuit miniaturization, simplification, use special-purpose integrated circuit; (2) drive circuit moduleization, the versatility and the commutativity of raising drive circuit are convenient to popularizing of ultrasonic motor; (3) intellectuality of drive circuit, control strategy and frequency self-adaption tracking technique and drive circuit is integrated, improve the efficient and the robustness of system; (4) drive circuit is integrated, and motor and drive circuit as a system, satisfying under the functional requirement prerequisite, are comprehensively improved the operating efficiency of ultrasonic motor and drive circuit.
The utility model content
In order to solve above-mentioned technical problem, the purpose of this utility model provides a kind of simple and reliable, stable output signal, has the ultrasonic motor Drive and Control Circuit of digital pulse width modulation interface.
Another purpose of the present utility model provides the ultrasonic motor driving control system that a kind of control stabilization is reliable and integrated level is high.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of ultrasonic motor Drive and Control Circuit, comprise drive signal generation circuit and control signal generation circuit, the output of described drive signal generation circuit is connected with phase-shift circuit, the output of described phase-shift circuit is connected with data and selects control circuit, described data select the output of control circuit to be connected with power amplification circuit, the output of described power amplification circuit is connected with voltage-regulation and impedance matching circuit, the output of described voltage-regulation and impedance matching circuit is the interface of CD-ROM drive motor, the output of described control signal generation circuit is connected with the digital regulated circuit of duty ratio, the output of the digital regulated circuit of described duty ratio selects the input of control circuit to be connected with data, and another input of the digital regulated circuit of described duty ratio is the computer numerical control (CNC) interface.
A kind of ultrasonic motor driving control system, comprise drive signal generation circuit, the output of described drive signal generation circuit is connected with phase-shift circuit, the output of described phase-shift circuit is connected with data and selects control circuit, described data select the output of control circuit to be connected with power amplification circuit, the output of described power amplification circuit is connected with voltage-regulation and impedance matching circuit, the output of described voltage-regulation and impedance matching circuit is connected with the traveling-wave ultrasonic motor, the output of described traveling-wave ultrasonic motor is connected with velocity checking circuits, the output of described velocity checking circuits is connected with the computer numerical control (CNC) circuit, the output of described computer numerical control (CNC) circuit is connected with the digital regulated circuit of duty ratio, another input of the digital regulated circuit of described duty ratio is connected with control signal generation circuit, and the output of the digital regulated circuit of described duty ratio selects the input of control circuit to be connected with data.
The beneficial effects of the utility model are: this ultrasonic motor Drive and Control Circuit compact conformation and integrated, integrated level is high; Drive circuit moduleization, the versatility and the replaceability of raising drive circuit are convenient to the application popularization of ultrasonic motor; The intellectuality of drive circuit, control strategy and frequency self-adaption tracking technique and drive circuit is integrated, improve efficient, reliability and the robustness of control circuit.
Another beneficial effect of the present utility model is: this ultrasonic motor driving control system has been realized the closed-loop control of high integration, intelligent ultrasonic motor control system is integrated with drive circuit with control strategy and frequency self-adaption tracking technique, raising overall system efficiency, reliability and robustness.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a block diagram of the present utility model;
Fig. 2 is that ultrasonic motor signal of the present utility model takes place and the control circuit schematic diagram;
Fig. 3 is the oscillogram of each signal node of Fig. 2;
Fig. 4 is ultrasonic motor controlled adjuster circuit theory diagrams of the present utility model;
Fig. 5 is a power amplification circuit schematic diagram of the present utility model.
Embodiment
With reference to Fig. 1, a kind of ultrasonic motor Drive and Control Circuit, comprise drive signal generation circuit 1 and control signal generation circuit 6, the output of described drive signal generation circuit 1 is connected with phase-shift circuit 2, the output of described phase-shift circuit 2 is connected with data and selects control circuit 3, described data select the output of control circuit 3 to be connected with power amplification circuit 4, the output of described power amplification circuit 4 is connected with voltage-regulation and impedance matching circuit 5, the output of described voltage-regulation and impedance matching circuit 5 is the interface of CD-ROM drive motor, the output of described control signal generation circuit 6 is connected with the digital regulated circuit 7 of duty ratio, the output of the digital regulated circuit 7 of described duty ratio selects the input of control circuit 3 to be connected with data, and another input of the digital regulated circuit 7 of described duty ratio is the computer numerical control (CNC) interface.
Continuation is with reference to Fig. 1, a kind of ultrasonic motor driving control system, comprise drive signal generation circuit 1, the output of described drive signal generation circuit 1 is connected with phase-shift circuit 2, the output of described phase-shift circuit 2 is connected with data and selects control circuit 3, described data select the output of control circuit 3 to be connected with power amplification circuit 4, the output of described power amplification circuit 4 is connected with voltage-regulation and impedance matching circuit 5, the output of described voltage-regulation and impedance matching circuit 5 is connected with traveling-wave ultrasonic motor 10, the output of described traveling-wave ultrasonic motor 10 is connected with velocity checking circuits 9, the output of described velocity checking circuits 9 is connected with computer numerical control (CNC) circuit 8, the output of described computer numerical control (CNC) circuit 8 is connected with the digital regulated circuit 7 of duty ratio, another input of the digital regulated circuit 7 of described duty ratio is connected with control signal generation circuit 6, and the output of the digital regulated circuit 7 of described duty ratio selects the input of control circuit 3 to be connected with data.
With reference to Fig. 2 and Fig. 3, signal produces generally and produces the frequency adjustable pulse signal by a waveshape generating device, after phase shift, obtain the pulse output that the two-way phase place differs pi/2, select for use multi-functional function generator ICL8038 to realize the generation of supersonic frequency drive signal herein.
The supply power voltage of function generator must could starting of oscillation greater than 10V, and the 9th pin output high-frequency impulse amplitude is identical with supply power voltage, considers in circuit the coupling of Transistor-Transistor Logic level in the CMOS level and controlling unit, has added divider resistance in circuit.Phase shift function is realized by NAND gate CD4011 and J-K flip flop CD4027.
In the phase shift process, pulse frequency becomes 1/2 of input signal, therefore need the adjustable frequency of waveform generator can reach more than 2 times of ultrasonic motor resonance frequency, the function generator output frequency can reach more than the 100KHz, when 4,5 pin connecting resistance resistances equated, output frequency can be calculated by following formula.
f＝0.33/(RC) (1)
F is an output frequency in the formula (1), when C=800PF, R=3.9K Ω.The highest output frequency of multi-functional function generator output square wave is 105.7KHz, and highest frequency can satisfy ultrasonic motor and drive requirement more than 50KHz after the phase shift.
Frequency adjustment realizes by changing function generator the 8th pin voltage, because the resonance range of ultrasonic motor is narrower, finishes the coarse adjustment and the fine adjustment function of frequency by the potentiometer of two different sizes in circuit.Pulse signal after the phase shift inserts the selection that data selector CD4019 realizes the two paths of signals lead-lag.
With reference to Fig. 4, ultrasonic motor pulse-width regulated control section is made of 555 timers (NE555), 8-digit device (HC393), digital comparator (HC688), data selector (CD4019), J-K flip flop (CD4027) and some logic gates respectively, eight inputs of data selector be respectively phase phasic difference+pi/2 and-the signal square wave of pi/2.
Produce high-frequency square-wave signal by 555 timers and insert counter, 8 outputs of counter link to each other with two 8 bit data comparators respectively.The relatively end P0～P7 pin of two comparators connects high level respectively and eight bit machine adjustable sides produce to realize the digital pulse width modulation signal.
When eight of counter be high level entirely, the B end is exported negative pulse; When counter output equates with computer digit output, A end output negative pulse.If the time interval of A, B output negative pulse is KT0, the value of K realizes by regulating the output of computer digital interface.Therefore can be 256T0 as a PWM cycle, K/256 produces the EDM Generator of Adjustable Duty Ratio waveform of D, E end as pulse width modulation duty, is connected on data selector CD4019 two gating ports sa and sb, respectively the input of gating a0-a3 and b0-b3.Definition K (0≤K≤255) is the duty cycle adjustment coefficient, by the value of regulating K regulate a PWM in the cycle two-phase phase difference be+the number ratio of pi/2 and-pi/2 pulse, promptly change the number ratio of interior CD-ROM drive motor positive movement of one-period and counter motion pulse, finally reach the purpose of control rate.Motor positive movement when 0＜K＜128,128＜K＜256 o'clock motor counter motion.
With reference to Fig. 5, to regulate through transformation again and receive ultrasonic motor at last through over commutation and power amplification from the signal of data selector output.Traditional type of drive generally will constitute the inversion electric bridge through a lot of power MOSFETs and finish above-mentioned task, but driven MOS FET need add some principle complexity, chip for driving that price is more expensive in the centre, makes this type of drive circuit complexity, cost higher.Circuit connects with coupling mutually and also makes circuit stability and recoverability relatively poor between the difference of element function of the same race and different elements in addition.The design has adopted a kind of dual H-bridge power integrated drive L298, can finish shaping of TTL circuit output signal and power amplifier function.
Dual H-bridge power integrated drive L298 is a kind of full-bridge inverting electric bridge, by two gating ends (6,11 pin) high level difference gating two-way power amplification passage.Can realize overload protection function by regulating SEN A and SEN B port resistance, simultaneously can be with the resistance both end voltage as signal feedback.Differ the square-wave signal of pi/2 through the two-phase phase place of external diode rectification and the scalable TTL input of power amplifier.Driver has four power take-offs, can directly connect inductive load, again by the appropriate design impedance matching, can directly drive the Traveling Ultrasonic motor after boosting through pulse transformer.The not only stable performance of this driver of the ultrasonic motor of centering mini power, circuit are simple, make the adjusting of power amplifier link and reparation become easier simultaneously.
More than be that preferable enforcement of the present utility model is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite of the utility model spirit, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (2)
1. ultrasonic motor Drive and Control Circuit, it is characterized in that: comprise drive signal generation circuit (1) and control signal generation circuit (6), the output of described drive signal generation circuit (1) is connected with phase-shift circuit (2), the output of described phase-shift circuit (2) is connected with data and selects control circuit (3), described data select the output of control circuit (3) to be connected with power amplification circuit (4), the output of described power amplification circuit (4) is connected with voltage-regulation and impedance matching circuit (5), the output of described voltage-regulation and impedance matching circuit (5) is the interface of CD-ROM drive motor, the output of described control signal generation circuit (6) is connected with the digital regulated circuit of duty ratio (7), the output of the digital regulated circuit of described duty ratio (7) selects the input of control circuit (3) to be connected with data, and another input of the digital regulated circuit of described duty ratio (7) is the computer numerical control (CNC) interface.
2. ultrasonic motor driving control system, it is characterized in that: comprise drive signal generation circuit (1), the output of described drive signal generation circuit (1) is connected with phase-shift circuit (2), the output of described phase-shift circuit (2) is connected with data and selects control circuit (3), described data select the output of control circuit (3) to be connected with power amplification circuit (4), the output of described power amplification circuit (4) is connected with voltage-regulation and impedance matching circuit (5), the output of described voltage-regulation and impedance matching circuit (5) is connected with traveling-wave ultrasonic motor (10), the output of described traveling-wave ultrasonic motor (10) is connected with velocity checking circuits (9), the output of described velocity checking circuits (9) is connected with computer numerical control (CNC) circuit (8), the output of described computer numerical control (CNC) circuit (8) is connected with the digital regulated circuit of duty ratio (7), another input of the digital regulated circuit of described duty ratio (7) is connected with control signal generation circuit (6), and the output of the digital regulated circuit of described duty ratio (7) selects the input of control circuit (3) to be connected with data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201004990U CN201663562U (en) | 2010-01-22 | 2010-01-22 | Ultrasonic motor driving control circuit and system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201004990U CN201663562U (en) | 2010-01-22 | 2010-01-22 | Ultrasonic motor driving control circuit and system thereof |
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| CN201663562U true CN201663562U (en) | 2010-12-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993736A (en) * | 2015-07-03 | 2015-10-21 | 南京航空航天大学 | Ultrasonic motor driving control device and control method |
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2010
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993736A (en) * | 2015-07-03 | 2015-10-21 | 南京航空航天大学 | Ultrasonic motor driving control device and control method |
| CN104993736B (en) * | 2015-07-03 | 2017-06-30 | 南京航空航天大学 | A kind of Driven by Ultrasonic Motors control device and control method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20110122 |