摘要
设计了一种新型气动微型伺服阀。该伺服阀的电-机械转换由一种新型的形状记忆合金(SMA)—生物金属纤维(BMF)实现。通过实验,研究了BMF100的输出位移与负载特性,在0.1 N载荷、10 V驱动电压范围内,其电压滞环为0.2 V;在1.0 N载荷、11 V驱动电压范围内,其电压滞环为0.4 V。利用CATIA软件建立了伺服阀的三维模型,利用有限元分析方法对阀芯的应力及应变特性进行了仿真研究。伺服阀阶跃响应仿真研究表明,伺服阀输出压力的上升时间为0.3 s,输出流量的上升时间为1.6 s。
Utilizing a new type shape memory alloy（SMA）-biometal fiberR（BMF） as the convertor from electrical energy to mechanical energy,a pneumatic micro-servo valve was developed.Input-output characteristics of BMF100,including displacement output and load output were investigated by the experiments.The voltage hysteresis of BMF100 was 0.2V at 0.1N load and 10V maximum driving voltage,and the value was 0.4V at 1.0N load and 11V maximum driving voltage.3-D model of servo valve was simulated by the software of CATIA.As an important part,the allowable stress and strain of coniform core of valve was studied by the numerical simulation of finite element method with software of ANSYS.Response time of pressure output of the valve was 0.3s.The result shows that it is feasible to use BMF as the convertor from electrical energy to mechanical energy of pneumatic servo micro-valve.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2010年第5期218-221,217,共5页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目(50777028)
浙江省钱江人才计划资助项目(2009R10010)
关键词
生物金属纤维
驱动器
气动阀
实验
仿真
BMF
Actuator
Pneumatic servo valve
Experiment
Simulation
