基于磁控形状记忆合金的伺服阀驱动器

Servo Valve Actuator Based on MSMA

磁控形状记忆合金(MSMA)是一种新型的具有形状记忆功能的功能材料。用这种材料制成的驱动器具有响应频响高、驱动力大、可控位移大等特点,特别适合于制造高精度大位移运动与位置控制驱动器。根据MSMA以上优点,研究基于MSMA的先导式伺服阀驱动器,设计出一种新型的驱动器结构:用弹簧恢复MSMA形变,直流绕组产生偏磁磁场,励磁绕组提供可控磁场。通过已有数据分析了材料静态特性,用MATLAB软件进行数据分析并且仿真,得到材料的驱动力及位移与时间的关系,验证了结构设计的合理性。

Magnetic shape memory alloys （MSMA）is a new type of shape memory alloys. The actuator made with MSMA has the advantages of fast speed,high frequency,big controlled displacement,memory function etc,and is particularly suitable for high preci-sion motion and position control. The high frequency servo valve actuator based on MSMA was researched,and a new type of actuator structure was designed：spring was used to recover deformation,DC coils was used to produce bias magnetic field,the field coils was used to provide controllable magnetic field. The material static characteristic was analyzed through existing data,electromagnetic simu-lation was made through ANSYS software. Finally the relationship between driving force and deformation is gotten,the rationality of the structure design is validated.