Bodily sensed vibration generator system
First Claim
1. A vibration generator system for vibrating a movable body according to a drive signal, wherein accumulation signals for excitation of the movable body to vibrations are included in the drive signal at intervals, and when the accumulation signals are given, the movable body perform motions to be excited, to damp thereafter, and to repeat such excitation and damping, and that changes in an envelope, which connects peaks of amplitude of the movable body when the vibrations are excited and damped, are obtained as vibrations of a lower frequency than a frequency of the vibrations, wherein the accumulation signals include excitation signals intermittently giving to the movable body a driving force in the same direction as the motions to be excited.
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Abstract
A vibration generator system is capable of generating vibrations of a frequency that can be bodily sensed by humans, notwithstanding a small size, and making setting of a configuration of vibrations easy. When a drive signal composed of a set of an accumulation signal and a damping signal is given as a natural frequency of a movable body, a vibrational waveform of the movable body makes an envelope. Since a frequency of the envelope is in a lower frequency band than the natural frequency of the movable body, humans can surely sense vibrations. When the number of and a current quantity of excitation signals and reverse excitation signals included in the accumulation signal are changed and the number of and a current quantity of inhibition signals and reverse inhibition signals included in the damping signal are changed, the envelope can be changed in frequency and amplitude, so that it becomes possible to generate a variety of vibrations.
45 Citations
13 Claims
- 1. A vibration generator system for vibrating a movable body according to a drive signal, wherein accumulation signals for excitation of the movable body to vibrations are included in the drive signal at intervals, and when the accumulation signals are given, the movable body perform motions to be excited, to damp thereafter, and to repeat such excitation and damping, and that changes in an envelope, which connects peaks of amplitude of the movable body when the vibrations are excited and damped, are obtained as vibrations of a lower frequency than a frequency of the vibrations, wherein the accumulation signals include excitation signals intermittently giving to the movable body a driving force in the same direction as the motions to be excited.
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12. A vibration generator system for vibrating a movable body according to a drive signal,
wherein accumulation signals for excitation of the movable body to vibrations are included in the drive signal at intervals, and when the accumulation signals are given, the movable body perform motions to be excited, to damp thereafter, and to repeat such excitation and damping, and that changes in an envelope, which connects peaks of amplitude of the movable body when the vibrations are excited and damped, are obtained as vibrations of a lower frequency than a frequency of the vibrations, wherein the drive signal includes damping signals for damping of the movable body, which has been excited with the accumulation signals, after the excitation, wherein the damping signals include inhibition signals giving to the vibrating movable body a driving force in a reverse direction to a move direction of the movable body, and wherein the damping signals include reverse inhibition signals provided between the inhibition signals to give a driving force in a reverse direction to that of the driving force by the inhibition signals.
Specification