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Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system

A rotating magnetic field and active control technology, applied in the fields of motor vibration suppression control, AC motor control, control system, etc., can solve problems such as complex structure and difficult implementation

Inactive Publication Date: 2006-04-19
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some schemes have been proposed for the active control and damping method of torsional vibration of the rotating shaft system, but most of them have complex structures and are difficult to implement

Method used

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  • Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system
  • Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system
  • Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system

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Embodiment Construction

[0009] Through the following specific examples and in combination with figure 1 , figure 2 The structure of the present invention is further described. Motor 1 adopts a three-phase squirrel-cage motor with extended shaft, bearing 2-1 and bearing 2-2 are ball bearings, two supports 3-1, 3-2, coupling 4, stator rotating rod 5, and connecting rod 6 For general machining parts. The linear vibrator 7, the power amplifier 8, and the frequency converter 10 are all general products. Computer 14 adopts industrial control computer, and the internal circuit block diagram of computer interface board 9 is as image 3 As shown, the circuit chip adopted by the computer interface board 9 is as follows: the speed counter 19 selects Intel 8254; the filter amplifier 16 selects op07; / D converter 18 and torsional vibration A / D converter 21 select ad574. The computer interface board 9 is installed in the ISA bus slot of the computer 14 . The rotational speed sensor 12 is a photoelectric sen...

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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 [0001] The invention belongs to the control technology of shafting torsional vibration in electric and mechanical systems. Background technique [0002] In aviation, spaceflight, electric power, machinery, engine and other industries, the torsional vibration of shafting is a problem worthy of attention. Shafting torsional vibration is easy to damage the shafting unknowingly, resulting in significant economic losses. Due to the complexity of some shafting structures, approximate assumptions or empirical formulas are mostly used in the current calculation and analysis of torsional vibration, so that the results of the current theoretical analysis of shafting torsional vibration, especially the torsional vibration amplitude and The torsional vibration stress value deviates greatly from the actual value, so after the theoretical calculation and analysis of the torsional vibration characteristics of the shafting system, it is necessa...

Claims

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Application Information

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IPC IPC(8): H02P23/04H02P27/06
Inventor 张俊红刘杰倪广健
Owner TIANJIN UNIV
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