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The Performance Study on Low-pressure Water Hydraulic Throttle Valve with Piezoelectric Actuator

Author: ChenJuYuan
Tutor: GongYongJun
School: Dalian Maritime University
Course: Mechanical and Electronic Engineering
Keywords: Low-pressure water hydraulic transmission Piezoelectric stack drive Water hydraulic throttle Temperature compensation Preload Performance test system
CLC: TH137.5
Type: Master's thesis
Year: 2011
Downloads: 69
Quote: 1
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Abstract


Water hydraulic drive technology is a new technology for the direct use of sea water or fresh water as the working medium , compared with traditional hydraulic technology , with a pollution-free , flame-resistant , energy saving , wide range of sources , etc. , and adapt to a sustainable human development and the environment protection requirements , while the low-pressure water hydraulic technology is becoming a research focus of researchers in developed countries as an effective way to solve the problem of the cost of water hydraulic components , cutting-edge issues fluid Power Transmission and Control field . Throttle as an important element of the fluid drive and control system , a flow control valve in the system can be used as conditioning system flow to the pump load as well as to adjust the pump inlet suction resistance . By adjusting the size of the variable orifice to change the fluid resistance , in order to achieve the control of the flow . On existing water hydraulic throttle foundation of the design of a novel piezoelectric driven low-pressure water hydraulic throttle piezoelectric stack drive faster response , output power , high position accuracy , energy-saving , and easy to control other advantages to the throttle valve opening control . The expanded main work is as follows : 1 introduces the basic theory of the piezoelectric drive , drive key issues for the piezoelectric stack , study its characteristics , design of piezoelectric stack the drive characteristics test experimental system and its The characteristics of the test analysis . For piezoelectric stack the drive temperature characteristics hysteresis characteristics study proposed improvement measures designed piezoelectric stack the drive temperature compensation agencies and preload adjustment device . And drive the piezoelectric stack preload using AMESm software simulation analysis and experimental studies to determine the preload applied to the ideal range . 3 , for the development of the piezoelectric drive low-pressure water hydraulic throttle , corrosion , sealing and cavitation to face a series of key technical issues in the choice of the form of the valve structure , the characteristics of the material analysis and selection , the choice of the form of sealed well processing technology for targeted research . Design structures piezoelectric drive low-pressure water hydraulic throttle performance test system and its commissioning and experimental analysis , summed up the impact of the experimental results of the debugging reasons .

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Hydraulic transmission > Hydraulic components
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