CN1761148A - Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system - Google Patents
Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system Download PDFInfo
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- CN1761148A CN1761148A CN 200510015130 CN200510015130A CN1761148A CN 1761148 A CN1761148 A CN 1761148A CN 200510015130 CN200510015130 CN 200510015130 CN 200510015130 A CN200510015130 A CN 200510015130A CN 1761148 A CN1761148 A CN 1761148A
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- torsional vibration
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Abstract
The driver includes motor, dwang of stator, and link rod, and straight vibrator, interface board of computer, frequency converter and revolution speed sensor. Measuring apparatus for torsional vibration and revolution speed sensor are installed on working-spindle series. Output signals of measuring apparatus for torsional vibration and revolution speed sensor are connected to interface board of computer. Output end of D/A converter of vibration signal in interface board of computer is connected to the input end of power amplifier. D/A converter for speed regulation of motor controls frequency converter to output frequency of power source. Through dwang of stator and link rod, the motor is connected to straight vibrator to make stator of motor generate superimposed components of rotating magnetic field and torsional vibration.
Description
Technical field
This invention belongs to the control technology of electric power, mechanical system center shafting torsional oscillation.
Background technology
In industries such as Aeronautics and Astronautics, electric power, machinery, engine, the torsional oscillation of axle system is the problem of very significant.The shafting torsional oscillation phenomenon is damaged axle system unconsciously easily, causes heavy economic losses.Because the complexity of some shafting structure, in the present torsional oscillation computational analysis adopt approximate hypothesis or draw empirical equation by experiment statistics, make present shafting torsional oscillation result of theoretic analysis, especially the torsional oscillation amplitude of axle system and stress due to torsional vibration value and actual deviation are bigger, need also after shafting torsional oscillation characteristic theoretical calculation analysis that therefore actual axle system is carried out the torsional oscillation actual measurement and are confirmed.Find out that thus torsional oscillation ACTIVE CONTROL oscillation damping method is a kind of rising method.Existing people proposes some schemes about rotary axis torsional oscillation ACTIVE CONTROL oscillation damping method, but complex structure performance difficulty mostly.The present invention proposes the drive unit of rotor axial system revolving-field type torsional oscillation ACTIVE CONTROL for this reason.The present invention is simple with mechanical structure, is applicable to the ACTIVE CONTROL and the vibration damping of shafting torsional oscillation.
Summary of the invention
The purpose of this invention is to provide a kind of torsional oscillation ACTIVE CONTROL drive unit based on the rotating magnetic field operation principle.Below consulting 2 pairs of operation principles of the present invention of accompanying drawing 1 and accompanying drawing describes.System is made up of the motor 1 that has extension shaft, bearing 2, bearing spider 3, coupling 4, rotating rod of stator 5, link rod 6, linear vibration exciter 7, power amplifier 8, interface board for computers 9, electric machine speed regulation frequency converter 10, digital torsional vibration instrument 11, speed probe 12, electric power switch 13, computer 14 etc.The composition of interface board for computers 9 as shown in Figure 3, it comprises: filter amplifier 16, accumulation signal D/A converter 17, frequency conversion A/D converter 18, spin counter 19, electric machine speed regulation D/A converter 20 and torsional oscillation A/D converter 21, interface board for computers 9 links to each other with computer 14.On the two ends of the elongated rotor axle of motor 1, rolling bearing 2-1 and rolling bearing 2-2 are installed respectively, make motor can lubricate rotation.On motor 1 stator case rotating rod of stator 5 is housed, rotating rod of stator 5 and 6 universal connections of link rod, promptly link rod 6 can freely rotate in low-angle with rotating rod of stator 5 junctions.Motor 1 main shaft is 15 to be connected by coupling 4 and working shaft.Working shaft is that digital torsional vibration instrument 11 and speed probe 12 are housed on 15, and the output signal of digital torsional vibration instrument 11 and speed probe 12 all is connected to interface board for computers 9.Accumulation signal D/A converter 17 outputs in the interface board for computers 9 connect the input of power amplifier 8; The frequency of electric machine speed regulation D/A converter 20 control of conversion devices 10 out-put supplies in the interface board for computers 9.Can adjust rotating speed of motor by the input voltage that changes frequency converter 10, purpose is that rotor and working shaft system are rotated synchronously.
Working shaft system drives rotor when rotating and rotates.Spin counter 19 receives the pulse signal that speed probe 12 produces by interface board for computers 9, and the rotating speed of axle system is measured.Frequency conversion A/D converter 18 is a digital signal with the VD conversion of signals of frequency converter 10, computer 14 is according to the output result of frequency conversion A/D converter 18 and spin counter 19, calculate the frequency rotating speed that just rotating magnetic field produced of motor frequency conversion power supply, calculate rotating speed poor of this rotating speed and working shaft system simultaneously.The input voltage value of (it is rotating speed that motor rotational shaft speed equals working shaft) frequency converter 10 when the difference that computer calculates the rotating speed of rotating speed and working shaft system again is zero, and the frequency of the frequency conversion input control of conversion power supply of exporting to frequency converter 10 by frequency conversion D/A converter 20, retainer shaft is that rotating speed equates with the rotating speed that rotating magnetic field produces thus.The rotating speed that the rotating magnetic field that motor stator produces makes motor shaft and working shaft are rotating speed when equating, do not have torsional interaction between rotor and the stator, or moment of torsion very little be to influence to ignore to working shaft.When torsional oscillation took place in working shaft system, the torsional vibration signals that digital torsional vibration instrument 11 sends sent torsional oscillation A/D converter 21 to after filter amplifier 16 amplifications, filtering, be converted to digital signal by torsional oscillation A/D converter 21 and reach computer.The pumping signal data that computer 14 is determined the required characteristic frequency of ACTIVE CONTROL vibration damping, phase place, amplitude according to the vibration characteristics and the digital torsional vibration signals of working shaft system, and export corresponding pumping signal by accumulation signal D/A converter 17 and give power amplifier 8.Power amplifier 8 provides excitation power for linear vibration exciter 7.The straight-line oscillation that linear vibration exciter 7 produces makes the rotor of motor 1 produce twisting vibration by link rod 6 and rotating rod of stator 5, and the rotating magnetic field that is mixed with twisting vibration like this produces torsional oscillation moment on rotor.Because the rotation and the rotating magnetic field of rotor are synchronous, the moment that do not rotate so only produce torsional oscillation moment, or producing very little rotating torque, torsional oscillation moment passes to working shaft system by armature spindle and shaft coupling 4, just finishes ACTIVE CONTROL torsional oscillation damping effect thus.
Description of drawings
Fig. 1 is a sketch for torsional oscillation ACTIVE CONTROL vibration damping shaft drive axis.
Fig. 2 is a torsional oscillation ACTIVE CONTROL vibration damping drive operation principle sketch.
Fig. 3 is interface board for computers 9 internal circuit block diagrams.
In the accompanying drawing: motor-1; Bearing-2-1,2-2; Bearing spider-3-1,3-2; Coupling-4; Rotating rod of stator-5; Link rod-6; Linear vibration exciter-7; Power amplifier-8; Interface board for computers-9; Electric machine speed regulation frequency converter-10; Digital torsional vibration instrument-11; Speed probe-12; Electric power switch-13; Computer-14; Working shaft system-15; Filter amplifier-16; Accumulation signal D/A converter-17; Frequency conversion A/D converter-18; Spin counter-19; Electric machine speed regulation D/A converter-20; Torsional oscillation A/D converter-21.
Specific embodiment
Below by specific embodiment and in conjunction with Fig. 1, Fig. 2 structure of the present invention is further described.Motor 1 adopts the three-phase squirrel cage motor of extension shaft, and bearing 2-1 and bearing 2-2 are ball bearing, two bearing 3-1,3-2, and coupling 4, rotating rod of stator 5, link rod 6 are general machined part.Linear vibration exciter 7, power amplifier 8, frequency converter 10 are the universal product.Computer 14 adopts industrial computers, interface board for computers 9 internal circuit block diagrams as shown in Figure 3, the circuit chip that interface board for computers 9 adopts is as follows: spin counter 19 is selected Intel 8254 for use; Filter amplifier 16 is selected op07 for use; Accumulation signal D/A converter 17 and electric machine speed regulation D/A converter 20 are selected dac1210 for use; Rotating speed A/D converter 18 and torsional oscillation A/D converter 21 are selected ad574 for use.Interface board for computers 9 is installed in the isa bus groove of computer 14.Speed probe 12 is a photoelectric sensor.
When starting working, system at first switch 13 is disconnected.Computer 14 is by the rotating speed of the spin counter 19 surveying work axles system of interface board 9, by frequency conversion A/D converter 18 Measurement for Inverter 10 frequency conversion VD.The rotating speed and the working shaft that are obtained the pairing rotating magnetic field of frequency of frequency converter output three phase electric machine by COMPUTER CALCULATION are the poor of rotating speed, input voltage by frequency conversion D/A converter 20, adjustment frequency converter 10, making the rotating speed of rotating magnetic field is that rotating speed equates with working shaft, and this process has adopted the method for closed-loop control.When the rotating speed of rotating magnetic field and working shaft be rotating speed equate or near the time Closing Switch 13.The torsional vibration signals that in the time of the computer control frequency converter is by the torsional oscillation A/D converter 21 collecting work axles in the interface board for computers 9, by frequency, phase place, the amplitude that calculates the needed pumping signal of ACTIVE CONTROL vibration damping, and then output signal to power amplifier 8 by accumulation signal D/A converter 17.Power amplifier drives linear vibration exciter 7 drives three phase squirrel cage motor 1 by linkage stator twisting vibration.The rotating magnetic field that is superimposed with twisting vibration has applied ACTIVE CONTROL vibration damping moment of torsion to working shaft system, reaches the effect of ACTIVE CONTROL vibration damping.
The invention has the beneficial effects as follows: utilize three phase electric machine and linear vibration exciter to produce the rotating magnetic field that is superimposed with torsional oscillation.The linear vibration exciter that system of the present invention adopted, signal generator or the like all are the universal products, and required processing component is also very simple.Be implemented in the twisting vibration that superposes on the rotating magnetic field that stator produces with lower cost, thereby produce torsional moment when making rotor produce turning moment.
Claims (2)
1. rotating magnetic field type driver for active controlling torsional vibration of rotational axis system, has motor (1), bearing (2), bearing spider (3), rotating rod of stator (5), link rod (6), linear vibration exciter (7), power amplifier (8), interface board for computers (9), frequency converter (10), speed probe (12), it is characterized in that interface board for computers (9) is by filter amplifier (16), accumulation signal D/A converter (17), frequency conversion A/D converter (18), spin counter (19), electric machine speed regulation D/A converter (20) and torsional oscillation A/D converter (21) are formed, in the working shaft system (15) digital torsional vibration instrument (11) and speed probe (12) are housed, the output signal of described digital torsional vibration instrument (11) and speed probe (12) all is connected to interface board for computers (9), accumulation signal D/A converter (17) output in the interface board for computers (9) connects the input of power amplifier (8), the frequency of electric machine speed regulation D/A converter (20) control of conversion device (10) out-put supply in the interface board for computers (9), simultaneous computer interface board (9) links to each other with computer (14).
2. according to right 1 described rotating magnetic field type driver for active controlling torsional vibration of rotational axis system, it is characterized in that described motor is connected with linear vibration exciter (7) by rotating rod of stator (5) and link rod (6), the rotating magnetic field stack twisting vibration composition that motor (1) stator is produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100151303A CN100377493C (en) | 2005-09-21 | 2005-09-21 | Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100151303A CN100377493C (en) | 2005-09-21 | 2005-09-21 | Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1761148A true CN1761148A (en) | 2006-04-19 |
| CN100377493C CN100377493C (en) | 2008-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100151303A Expired - Fee Related CN100377493C (en) | 2005-09-21 | 2005-09-21 | Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175412A (en) * | 2011-03-10 | 2011-09-07 | 上海交通大学 | Rotor torsion oscillation testing device and testing method thereof |
| CN107064562A (en) * | 2017-04-20 | 2017-08-18 | 吉林宇恒光电仪器有限责任公司 | A kind of caliberating device of photoelectric encoder output speed error |
| CN112963496A (en) * | 2021-04-07 | 2021-06-15 | 哈尔滨工业大学 | Control device and control method for reducing multi-order line spectrum vibration of rotary machine |
| CN114448313A (en) * | 2022-03-03 | 2022-05-06 | 西安热工研究院有限公司 | Vibration compensation system based on servo driver |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5410228A (en) * | 1991-02-05 | 1995-04-25 | Kabushiki Kaisha Yaskawa Denki | Method and apparatus for suppressing torsional vibration in an electric motor speed control system |
| DE19907216C1 (en) * | 1999-02-19 | 2000-10-12 | Univ Hannover | Torsional vibration damper |
| JP2000297844A (en) * | 1999-04-16 | 2000-10-24 | Nok Vibracoustic Kk | Dynamic vibration absorber |
| CN2844992Y (en) * | 2005-11-01 | 2006-12-06 | 天津大学 | Rotor axial series torsional vibration active controlling and driving device based on rotary magnetic field |
-
2005
- 2005-09-21 CN CNB2005100151303A patent/CN100377493C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175412A (en) * | 2011-03-10 | 2011-09-07 | 上海交通大学 | Rotor torsion oscillation testing device and testing method thereof |
| CN107064562A (en) * | 2017-04-20 | 2017-08-18 | 吉林宇恒光电仪器有限责任公司 | A kind of caliberating device of photoelectric encoder output speed error |
| CN112963496A (en) * | 2021-04-07 | 2021-06-15 | 哈尔滨工业大学 | Control device and control method for reducing multi-order line spectrum vibration of rotary machine |
| CN114448313A (en) * | 2022-03-03 | 2022-05-06 | 西安热工研究院有限公司 | Vibration compensation system based on servo driver |
| CN114448313B (en) * | 2022-03-03 | 2024-01-23 | 西安热工研究院有限公司 | Vibration compensation system based on servo driver |
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| CN100377493C (en) | 2008-03-26 |
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Granted publication date: 20080326 Termination date: 20100921 |