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Displacement sensor testing frock of electrohydraulic servo valve

A technology of displacement sensors and electro-hydraulic servo valves, which is applied in the testing of mechanical components, testing of machine/structural components, and measuring devices. The effect of development costs

Inactive Publication Date: 2008-05-14
SHANGHAI NUOMA HYDRAULIC SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a displacement sensor testing tool for electro-hydraulic servo valves, which has solved the defects of inconvenient testing and poor precision in the prior art

Method used

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  • Displacement sensor testing frock of electrohydraulic servo valve

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Embodiment 1

[0014] As shown in Figure 1, a displacement sensor test tool for electro-hydraulic servo valves, including valve core test seat 7, handle micrometer 10, iron core rod sleeve 6 and displacement sensor fixed end cover 4, the iron core The rod sleeve 6 is installed in the valve core test seat 7, one end of which is equipped with a return spring 5, and a stainless steel rod sleeve is installed on its outer sea, and the end cover 4 is connected to the iron core rod sleeve 6 and the displacement sensor coil 1 by screws 2 and 3 , the screw micrometer head 10 is positioned and fixed by the screw 9, and the valve core test seat 7 is fixed on the valve core test seat 8 by the screw 11; the displacement sensor coil 1 is externally connected with a built-in amplifier (input excitation signal, output secondary Coil excitation signal), the screw micrometer head 10 feeds (or retreats), so that the core rod sleeve 6 is displaced, and the secondary coil generates a voltage difference, which is ...

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Abstract

The invention relates to a displacement sensor test frock for electro hydraulic servovalve which includes a valve core test seat (7), a displacement measuring adjusting part(10), an iron core stem casing (6)and a fixed end cover (4)for the displacement sensor. The iron core stem casing (6) is arranged in the valve core test seat (7) and one end of the iron core stem casing is provided with an offsetting spring(5). The end cover (4) is connected with the iron core stem casing (6) and a displacement sensor loop (1) through a bolt. The displacement measuring adjusting part (10) is positioned andfixed by a bolt (9) and the valve core test seat (7) is fixed on a valve core test seat (8) with a bolt (11). The invention can better detect the linearity, the yield value and the changing range of the displacement sensor, and can detect the changing range, the linearity and the yield value of the feedback circuit voltage of a built-in amplifier matched with an electric feedback type servovalve,thereby being convenient for the debugging of the servovalve greatly, reducing the developing period and saving the developing cost.

Description

technical field [0001] The invention belongs to the field of testing components of electro-hydraulic servo valves, in particular to a displacement sensor testing tool for electro-hydraulic servo valves. Background technique [0002] The development of hydraulic servo valves in the international professional field has experienced more than 50 years, and the application occasions are becoming more and more extensive. In the past 20 years, due to the rapid development of the electronic industry, the control theory has been widely used in industrial products, and the hydraulic servo valve with electric feedback has developed rapidly. However, the research and manufacture of electric feedback servo valves are basically in a blank state in China. Through the collective efforts of numerous scientific researchers, our company has independently developed several varieties of electric feedback servo valves. The key of the electric feedback servo valve lies in its LVDT displacement s...

Claims

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Application Information

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IPC IPC(8): G01D18/00G01M13/00
Inventor 曹勇桂云杰陈奕泽
Owner SHANGHAI NUOMA HYDRAULIC SYST
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