| 摘要 |
A vibration generation apparatus allows vibration frequency and amplitude to be independently controlled and to produce various modes of vibration involving shocks in addition to simple modes of vibration. The apparatus comprises a coil and a vibratory assembly comprising a-yoke providing a magnetic circuit, the coil being supplied with a drive current for a rectangular pulse of a constant peak value to cause the vibratory assembly to vibrate such that the amplitude of the vibration assembly corresponds to the duration of the rectangular-pulse drive current. The vibration generation apparatus allows the frequency and the duration of the rectangular-pulse drive current to be varied independently of each other.
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