Patent ID: 9614513
Date: 2017-04-04
CPC Classifications: G01C,H03K

Claim:
1. A vibration generation apparatus for driving a test body to vibrate in response to a PWM drive signal, the vibration generation apparatus comprising: a magnitude detection part for detecting a magnitude of vibration of the test body; a drive part for determining a duty ratio of the PWM drive signal in accordance with the magnitude of vibration so that the magnitude of vibration becomes a predetermined magnitude and outputting the PWM drive signal having the determined duty ratio, wherein the drive part includes a control circuit and a drive signal generation circuit, the control circuit outputting a control value corresponding to the duty ratio, and the drive signal generation circuit measuring time corresponding to the control value by using a gate delay time, generating the PWM drive signal having a pulse width corresponding to the control value, and outputting the PWM drive signal.