| 摘要 |
Provided is a control device for a vibration type actuator having an elastic member fixed with an electro-mechanical energy conversion element, and a vibration member that generates a vibration on a surface of the elastic member by supplying a drive signal to the electro-mechanical conversion element, the control device including: a drive circuit that supplies a periodic signal to the electromechanical energy conversion element, a state detecting circuit that detects a drive state of the vibration member and outputs a waveform signal representing the detected drive state, an inclination detecting circuit that detects an inclination of a waveform in a given level of the waveform signal, and a control circuit that controls the drive circuit on the basis of an output signal from the inclination detecting circuit.
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