| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration generator which can generate vibrations of a frequency that a human can feel in spite of a small size and permits easy setting of the form of the vibrations. SOLUTION: When a driving signal S1 consisting of a set of an accumulation signal S1a and attenuation signal S1b is given as the natural frequency of a movable body, the vibration waveform of the movable body is an envelope E. Since the frequency fe of the envelope E is in a band lower than the frequency of the natural frequency of the movable body, the human is made able to surely know the vibrations. If the number of the excitation signal A and reverse excitation signal B included in the accumulation signal S1a and current capacity are changed and when the number of the suppression signal C and reverse suppression signal D included in the attenuation signal S1b and the current capacity are changed, the frequency fe and amplitude of the envelope E can be changed and therefore the diversified vibrations can be generated. COPYRIGHT: (C)2004,JPO&NCIPI
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