发明名称 |
Magnetostrictive vibration generation system |
摘要 |
A shaker with a Terfenol-D rod actuator includes a mass coupled to both ends of the rod through a spring seat, a spring seat/adjuster and a spring washer. The actuator is mounted inside a cylindrical coil, which in turn is mounted inside a cylindrical permanent magnet, which in turn is mounted inside a cylindrical housing. An electrical drive system provides a predetermined excitation signal to the coil to cause the rod to vibrate under the influence of the magnetic field generated by the coil. One embodiment features a vibrating mass on one end of the rod. An implantable shaker includes a seal to leak-proof the shaker and a coating of Biomer TM . The implantable shaker can be implanted in an animal to test tissue response to certain vibrations. According to another embodiment, the Terfenol-D rod actuator is held in place on one end with a pre-stress adjusting screw, which is threaded into the end of the housing and fixed in place with a jam nut. In all embodiments, a spring base is seated on one end of the rod actuator and forms an annular coaxial air gap between it and a spring seat, so that the air gap remains constant when the rod actuator vibrates and the spring base moves coaxially with respect to the spring seat.
|
申请公布号 |
US5510660(A) |
申请公布日期 |
1996.04.23 |
申请号 |
US19940269678 |
申请日期 |
1994.07.01 |
申请人 |
IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC. |
发明人 |
FLATAU, ALISON;HALL, DAVID |
分类号 |
H01L41/12;(IPC1-7):H01L41/12 |
主分类号 |
H01L41/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|