Ultrasonic motor
Driving the autofocus mechanism in SLR cameras- Ultrasonic motors are based on an entirely new operating principle that does not rely on the electromagnetic mechanism used in conventional motors. Ultrasonic motors are advantageous for their low speed, high torque, and quick response, in addition to being quiet and non-magnetic. Ultrasonic motors are widely used for driving the autofocus mechanism in SLR cameras, the headrests in luxury cars, and stages of semiconductor equipment and holds tremendous potential for future market growth.
Vacuum-type motor
Ring-type motor-
Due to advances in telecommunication equipment, there has been escalating customer demand that cannot be met with electromagnetic motors. In response to these demands, Fukoku now performs everything from circuit design of ultrasonic motors to the production of piezoelectric ceramics and motors in-house, receiving high praise for its reliability both in Japan and abroad. Our product line-up includes motors with encoders, vacuum-type motors, hollow-type motors, non-magnetic motors, φ12 motors, and ring-type motors, and we provide custom solutions to meet the needs of our clients.
φ12 motors
Hollow-type motor
Principles of the ultrasonic motor
- The ultrasonic motor produces force with traveling waves generated by applying a voltage in the ultrasonic range to an elastic metal body adhered to a piezoelectric ceramic material. The magnitude of the traveling waves is about 2-3 microns. Since a single strand of human hair is about 100 microns, advanced machining and manufacturing technologies are needed to produce such a motor. The development and design of ultrasonic motors is achieved through advanced mechanical design and a combination of machining, materials technology, electronics, and Fukoku's unique technology.
