DRIVE SYSTEM, VIDEO DEVICE, IMAGE PROJECTION DEVICE, AND DRIVE CONTROL METHOD

摘要

A drive system includes an actuator, a waveform generating unit, a driving amplifier, and a bias amplifier. The actuator includes a drive unit. The waveform generating unit generates a voltage waveform for driving the drive unit. The driving amplifier amplifies the voltage waveform so as to apply a voltage to the drive unit. The bias amplifier applies a bias voltage to the drive unit. The driving amplifier and the bias amplifier are coupled to a shared power supply and the ground. The output voltage of the bias amplifier is higher than the minimum output voltage of the driving amplifier.

主权项

1. A drive system comprising:
an actuator including a drive unit; a waveform generating unit configured to generate a voltage waveform for driving the drive unit; a driving amplifier configured to amplify the voltage waveform so as to apply a voltage to the drive unit; and a bias amplifier configured to apply a bias voltage to the drive unit, wherein the driving amplifier and the bias amplifier are coupled to a shared power supply and the ground, and the output voltage of the bias amplifier is higher than the minimum output voltage of the driving amplifier.