Piezoelectric robot demonstrates linear and turning motion
The new H-shaped bionic piezoelectric robot (H-BPR) consists of four legs connected by three piezoelectric beams. By harnessing the bending vibrations of the piezoelectric beams, the robot mimics the periodic leg movements of a cheetah’s running gait.
The researchers analyzed the dynamics and kinematics of the piezoelectric robot to determine the trajectory of a point at the end of the robot’s leg. They then examined the motion principles of the robot, followed by modal and harmonic response analyses using finite element analysis software.
“The performance test results show that the piezoelectric robot has a maximum velocity of 66.79 mm/s at an excitation voltage of 320 V and a load capacity of 55 g. In addition, the H-BPR with unequal drive legs has better climbing performance, and the obtained conclusions are informative for selecting leg heights for piezoelectric robots,” the researchers wrote in the abstract.