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Electric spindle semi-active vibration control test stand, system and electric spindle control method

A technology of vibration control and test bench, which is applied in the general control system, control/regulation system, vibration test, etc., and can solve the problems that the bending vibration and torsional vibration of the electric spindle cannot be effectively suppressed

Inactive Publication Date: 2013-01-02
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem solved by the invention is that the prior art cannot effectively suppress the bending vibration and torsional vibration of the electric spindle

Method used

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  • Electric spindle semi-active vibration control test stand, system and electric spindle control method
  • Electric spindle semi-active vibration control test stand, system and electric spindle control method
  • Electric spindle semi-active vibration control test stand, system and electric spindle control method

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Embodiment Construction

[0018] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0019] see figure 1, the electric spindle semi-active vibration control test bench of the present invention includes a bracket, an electric spindle 1, a stator 2, a motion generating device, a rotor 4, at least two displacement sensors, a strain gauge 5, at least one for controlling the bending vibration of the electric spindle 1 The flexural vibration magnetorheological damper 6, at least one torsional vibration magnetorheological damper 7 for controlling the torsional vibration of the electric spindle 1, and a magnetic powder brake 8. The brackets are installed on the base 3 in this embodiment, including left brackets 9A and 9B, and the left bracket 9A and the right bracket 9B are arranged opposite to each other. The electric spindle 1 ...

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Abstract

The invention discloses an electric spindle semi-active vibration control test stand, a system and an electric spindle control method, wherein the electric spindle semi-active vibration control method comprises the following steps: through a processor, an electric spindle torsional coupled vibration signal is separated by using an experience modal decomposition and Hilbert transformation method so as to obtain a test frequency and a test phase; through an electric spindle intensive parameter equivalent mechanical model and the design parameter of the electric spindle system, the theory frequency and theory phase of the bending vibration and the torsional vibration of the electric spindle are obtained; through a force synchronizing vibration control model, the testing frequencies of the bending vibration and the torsional vibration of the electric spindle are combined, the test phase, the theory frequency and the theory phase are combined, so that a first pulse-width modulation (PWM) signal of a magneto-rheological absorber used for controlling the bending vibration and a second PWM signal of the magneto-rheological absorber used for controlling the torsional vibration are generated respectively. Therefore the bending vibration and the torsional vibration of the electric spindle can be synchronously controlled.

Description

technical field [0001] The invention relates to the vibration control technology of an electric spindle, in particular to a semi-active vibration control test bench for an electric spindle, a test system and a vibration control method for an electric spindle. Background technique [0002] Electric spindle components are the main power source of precision and ultra-precision machine tools, directly participate in the cutting process, and have a great impact on the machining accuracy, surface quality and production efficiency of the machine tool. With the increase of the speed of the electric spindle, the centrifugal force is getting bigger and bigger when the electric spindle is running, and a very small unbalance anywhere on the electric spindle (including the tool) will generate a large centrifugal force. The unbalanced vibration of the electric spindle caused by factors such as unbalance on the electric spindle, unbalanced tool, external interference, manufacturing and ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02G01M13/00G05B13/02
Inventor 胡红生钱苏翔王娟
Owner JIAXING UNIV
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