An elliptic friction drive element using an ICPF actuator

The ionic conducting polymer gel film (ICPF) actuator, which has advantages such as low driving voltage, high speed, and underwater motion, was discovered in 1992. This article presents a new actuator element using the ICPF which generates an elliptic motion, as used in ultrasonic motors, to drive objects by friction. A method of forming a pattern of ICPF on a membrane was developed for production of the element. Some robotic applications are proposed. Experimental elements effectively functioned as driving devices and successfully drove a rotary motor as a testimony. Experiments and modeling revealed the relationship of the resultant elliptic motion to control signals and design parameters