Development and Experimental Study of Dynamic Characteristics for Servo Valve Torque Motor

Cheng Cheng Li; Dong Xiang Shao; Guang Lin Wang

doi:10.4028/www.scientific.net/KEM.621.476

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 621Development and Experimental Study of Dynamic...

Development and Experimental Study of Dynamic Characteristics for Servo Valve Torque Motor

Abstract:

Torque motor is the electrical - mechanical converter of servo valve, is the bridge connecting electrical devices and hydraulic devices, is one of the key elements of electro-hydraulic servo valve. The main object of study of this paper is moving iron permanent magnet torque motor. The dynamic characteristics of torque motor are the key parameter to measure the overall performance. At present, the research of most of manufacturers emphasize on the test of integral valve servo valve. Torque motor is also designed to mimic the structure and size of foreign-based valve, lacking of system understanding for characteristics of servo valve. Early in the design, people cannot effectively control the overall performance of the torque motor products. There is large performance difference with a larger group of torque motor, producing serious waste. This paper describes the principle of dynamic characteristics test, establishes a test system of dynamic characteristics for torque motor, accurately obtain nature frequency and bandwidth of torque motor on the test bench which we have established before.

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Periodical:

Key Engineering Materials (Volume 621)

Pages:

476-481

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.621.476

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Online since:

August 2014

Authors:

Cheng Cheng Li*, Dong Xiang Shao, Guang Lin Wang

Keywords:

Bandwidth, Characteristics of Dynamic, Natural Frequency, Torque Motor

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