Abstract:Conducting polymers have wide application prospect in biological robot and biomedical device because of their excellent properties of small energy consumption, light weight and good flexibility. The experimental system has been set up for the actuators which made by multilayer bending polypyrrole conducting polymer, and according to the equivalent cantilever beam theory, the mechanical model of conducting polymer actuators are given. Through researched the substrate bending deformation when applied low voltage (0 ~ 1 V) to the actuators, the relationship between the voltage and the displacement is established. Further more, the function relation between the voltage and the uniformly distributed load is also founded. The results show that the voltage and vertical displacement are a linear relationship, when the voltage is 1 V, the displacement may reach half the length of the actuators, and the scaling factor between voltage and strain is derived. Besides, it was verified by the fact that the tip of the actuator can support a certain load and the actuator can move 2.71 mm with something weighted about 5 times of itself on it.