发明名称 |
Driving unit |
摘要 |
A driving unit of the present invention comprises a moving element, an elastic body configured to support the moving element, a permanent magnet fixed on said moving element, an electromagnet disposed to be opposed to said permanent magnet, and a controller. The moving element and the elastic body constitute a resonance system. The electromagnet includes a magnetic material and a coil wounded around the magnetic material. The controller magnetizes the magnetic material by feeding a current through the coil and gives a vibration force to the moving element by magnetic force acting between the magnetic material and the permanent magnet. The feature of the present invention resides in that the controller determines a current waveform necessary for an intended motion of the moving element, and applies a voltage to the coil intermittently so that a current in the form of the current waveform flows through said coil. <IMAGE> |
申请公布号 |
EP1610447(B1) |
申请公布日期 |
2009.09.09 |
申请号 |
EP20050012363 |
申请日期 |
2005.06.08 |
申请人 |
MATSUSHITA ELECTRIC WORKS, LTD. |
发明人 |
IZUMI, TOMOHIRO;IBUKI, YASUO;YAMASHITA, MIKIHIRO;ABE, HIDEAKI |
分类号 |
H02K33/02;B26B19/28;H02K33/04;H02K33/16;H02P25/02 |
主分类号 |
H02K33/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|