| 摘要 |
A miniaturized inexpensive vibration generator using rotary bodies having unbalanced weights with no absolute encoders provided on the rotary body driving means, consisting of rotary bodies having unbalanced weights and disposed in an opposed state, driving means for rotating the rotary bodies, members to be detected fixed to the rotary bodies so that the members to be detected have a predetermined positional relation with the relative weights, rotation detectors provided fixedly in the positions close to the loci of the rotational movements of the members to be detected, and adapted to output signals representative of what are detected thereby in the form of pulses each of which is generated every time each of the members to be detected passes the relative rotation detector, i.e., every time each member to be detected is revolved 360.degree., a phase difference computing element adapted to compute a phase difference between the unbalanced weights on the basis of the signals from the rotation detectors, and rotation controllers adapted to control the rotary body driving means on the basis of a detected phase difference signal from the phase difference computing element so that the phase difference signal reaches a set level; and a vibratory stimulating apparatus utilizing this vibration generator.
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