CN2844992Y - Rotor axial series torsional vibration active controlling and driving device based on rotary magnetic field - Google Patents
Rotor axial series torsional vibration active controlling and driving device based on rotary magnetic field Download PDFInfo
- Publication number
- CN2844992Y CN2844992Y CNU2005201229226U CN200520122922U CN2844992Y CN 2844992 Y CN2844992 Y CN 2844992Y CN U2005201229226 U CNU2005201229226 U CN U2005201229226U CN 200520122922 U CN200520122922 U CN 200520122922U CN 2844992 Y CN2844992 Y CN 2844992Y
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- interface board
- magnetic field
- motor
- computers
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Abstract
The utility model provides a torsional vibration active control driving device based on the operating principle of a rotating magnetic field, which is mainly provided with a motor, a stator rotating rod, a connecting rod, a linear exciter, an interface board for a computer, a frequency converter, a speed sensor, etc., wherein a torsional vibration measurer and a speed sensor are installed on a working shafting, and output signals of the torsional vibration measurer and the speed sensor are both connected to the interface board for the computer; an output end of an exciting signal D/A converter in the interface board for the computer is connected to an input end of a power amplifier, and the frequency of an output power of the frequency converter is controlled by a motor speed regulating D/A converter. The motor is connected with the linear exciter through the stator rotating rod and the connecting rod, and a rotating magnetic field generated by the motor stator can be overlapped in the torsional vibration.
Description
Technical field
The utility model 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 complicacy of some shafting structure, in the present torsional oscillation computational analysis adopt approximate hypothesis or draw experimental formula 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 utility model proposes rotor axial system torsional ACTIVE CONTROL drive unit based on rotating magnetic field for this reason.The utility model is simple with physical construction, is applicable to the ACTIVE CONTROL and the vibration damping of shafting torsional oscillation.
Summary of the invention
The purpose of this utility model provides a kind of torsional oscillation ACTIVE CONTROL drive unit based on the rotating magnetic field principle of work.Below consulting 2 pairs of principle of work of the present utility model 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, shaft 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, computing machine 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 computing machine 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 shaft 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 output terminals in the interface board for computers 9 connect the input end 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, computing machine 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 computing machine calculates the rotating speed of rotating speed and working shaft system again is zero, and the frequency of the frequency conversion input end 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 computing machine.The pumping signal data that computing machine 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 sketch for the utility model based on the rotor axial system torsional ACTIVE CONTROL driving unit shaft of rotating magnetic field.
Fig. 2 is the rotor axial system torsional ACTIVE CONTROL drive unit principle of work sketch of the utility model based on rotating magnetic field.
Fig. 3 is the utility model 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; Shaft 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; Computing machine-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 utility model 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 shaft 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.Computing machine 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 computing machine 14.Speed probe 12 is a photoelectric sensor.
When starting working, system at first switch 13 is disconnected.Computing machine 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 assembly 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 beneficial effects of the utility model are: utilize three phase electric machine and linear vibration exciter to produce the rotary magnetic that is superimposed with torsional oscillation . The linear vibration exciter that the utility model system adopts, signal generator etc. all are the universal products, required processing department Part is also very simple. Be implemented in the twisting vibration that superposes on the rotating excitation field that stator produces with lower cost, thereby make rotor Produce torsional moment when producing turning moment.
Claims (2)
1. based on the rotor axial system torsional ACTIVE CONTROL drive unit of rotating magnetic field, 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 terminal in the interface board for computers (9) connects the input end 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 computing machine (14).
2. according to right 1 described rotor axial system torsional ACTIVE CONTROL drive unit based on rotating magnetic field, 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 |
|---|---|---|---|
| CNU2005201229226U CN2844992Y (en) | 2005-11-01 | 2005-11-01 | Rotor axial series torsional vibration active controlling and driving device based on rotary magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201229226U CN2844992Y (en) | 2005-11-01 | 2005-11-01 | Rotor axial series torsional vibration active controlling and driving device based on rotary magnetic field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2844992Y true CN2844992Y (en) | 2006-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201229226U Expired - Lifetime CN2844992Y (en) | 2005-11-01 | 2005-11-01 | Rotor axial series torsional vibration active controlling and driving device based on rotary magnetic field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2844992Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377493C (en) * | 2005-09-21 | 2008-03-26 | 天津大学 | Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system |
| CN102906992A (en) * | 2010-03-22 | 2013-01-30 | 西门子公司 | Avoidance of torsional excitations in converter-controlled compressor runs |
| CN105864302A (en) * | 2016-01-21 | 2016-08-17 | 大连理工大学 | Shaft coupling vibration reduction system and method |
| CN106940574A (en) * | 2016-01-04 | 2017-07-11 | 中冶长天国际工程有限责任公司 | A kind of intensive mixer control method and system |
-
2005
- 2005-11-01 CN CNU2005201229226U patent/CN2844992Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377493C (en) * | 2005-09-21 | 2008-03-26 | 天津大学 | Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system |
| CN102906992A (en) * | 2010-03-22 | 2013-01-30 | 西门子公司 | Avoidance of torsional excitations in converter-controlled compressor runs |
| US9148084B2 (en) | 2010-03-22 | 2015-09-29 | Siemens Aktiengesellschaft | Machine having a converter controlled drive |
| CN102906992B (en) * | 2010-03-22 | 2016-02-03 | 西门子公司 | Avoiding of being encouraged by the torsion in the compressor branch road of convertor controls |
| CN106940574A (en) * | 2016-01-04 | 2017-07-11 | 中冶长天国际工程有限责任公司 | A kind of intensive mixer control method and system |
| CN105864302A (en) * | 2016-01-21 | 2016-08-17 | 大连理工大学 | Shaft coupling vibration reduction system and method |
| CN105864302B (en) * | 2016-01-21 | 2018-09-04 | 大连理工大学 | Shaft coupling vibration insulating system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080326 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |