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Force and displacement amount air-float type measurement method

A measurement method and displacement technology, applied in measurement devices, hydraulic/pneumatic measurement, power measurement, etc., can solve the problems of no relevant reports, complex decoupling structure, and inability to achieve decoupling, so as to improve measurement accuracy , the effect of avoiding errors

Inactive Publication Date: 2010-03-24
HEFEI UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

However, for the measurement of multi-dimensional force, there is inevitably inter-dimensional coupling in this type of measurement method. The decoupling setting is not only complex in structure, but also cannot achieve complete decoupling. Various decoupling methods only reduce the influence of coupling to a certain degree of accuracy.
[0004] So far, there is no relevant report on the method of using pneumatic floating to realize force and displacement measurement

Method used

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  • Force and displacement amount air-float type measurement method
  • Force and displacement amount air-float type measurement method
  • Force and displacement amount air-float type measurement method

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Embodiment Construction

[0020] see Figure 5 , the floating body is set as a floating plate 51, and an air flotation system supporting the floating plate 51 with air flow is provided. The air flotation system is formed by a throttle device 52 communicated with the gas source and the surface of the floating plate 51 to form a pressure chamber 53. A pressure measuring chamber 54 is provided at the end of the flow device 52; the pressure signal of the pressure receiving chamber 53 or the pressure measuring chamber 54 is used as the detection output signal, or the flow rate or flow velocity signal of the throttling device 52 is used as the detection output signal. Each detection output signal is in one-to-one correspondence with the measured external force acting on the floating plate 51 and the displacement of the floating plate 51 under the action of the external force, and the corresponding relationship is determined by an experimental calibration method.

[0021] see figure 1 , in order to realize t...

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Abstract

Disclosed is an air float measuring method of force and displacement, which is characterized in that a floating body is arranged, and a air float system which uses air current to support the floatingbody is arranged, an external force acted on the floating body or the displacement of the floating body under the external action is obtained by measuring the air pressure, the flow rate or the flow speed signal in the air float system, the corresponding relation between the pressure, the flow rate and the flow speed in the air float system and the measured external force acted on the floating body or the displacement of the floating body under the external action is confirmed by a experimental standardization method. The implementing of the method of the invention can effectively avoid interstage coupling when multidimensional forces are acted, accurately implement multidimensional force-measuring, and enable an air bearing to simultaneously be the sensors of the force and the displacement.

Description

technical field [0001] The invention relates to a method for measuring force and displacement. Background technique [0002] At present, the application of air flotation technology is mainly in gas bearings, and the application of gas bearings as the "carrying" function of air flotation systems has achieved great success. However, the gas bearing can only be used to bear the load, but cannot measure the magnitude of the load on the floating body and the displacement of the floating body. [0003] The existing force measurement methods include strain gauge type, piezoelectric element type, differential transformer type, capacitive displacement type and so on. However, for the measurement of multi-dimensional force, there is inevitably inter-dimensional coupling in this type of measurement method. The decoupling setting is not only complex in structure, but also cannot achieve complete decoupling. Various decoupling methods only reduce the influence of coupling to a certain d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/02G01L3/00
Inventor 黄斌
Owner HEFEI UNIV OF TECH