Patent ID: 6545389
Filing Date: 2003-04-08
Classification: B82Y,H02N

Abstract:
A driving apparatus comprising:an electromechanical transducer which can extend and contract in a predetermined direction, said transducer having a first end and a second end in the predetermined direction; a first member connected to the first end of said transducer; a driving frictional member connected to the second end of said transducer; a second member frictionally coupled with said driving frictional member; a driving pulse generating means including a high-speed electrifying circuit and a low-speed electrifying circuit, said driving pulse generating means being connected to said electromechanical transducer; and a controller which is capable of controlling an electrification period of time and an electrification start time of said high-speed electrifying circuit and said low-speed electrifying circuit of said driving pulse generating means; wherein said electrification start time of said high-speed electrifying circuit from said start time of said low-speed electrifying circuit is changed based on said electrification period of the low-speed electrifying circuit.