A piezoelectric inertial
crawling robot with a large load-to-weight ratio and a driving method thereof with an extremely simple structure. The
robot provides direct power for the
robot's
linear motion and rotational motion by arranging two piezoelectric inertial
impact drive mechanisms on one side as the main power source. The robot has an extremely simple structure, no
energy loss and redundant structure, so that it can achieve high-speed linear and rotational motion in a plane. At the same time, the load weight is designed as an
inertial mass, so that the load is converted into power, which significantly improves the robot's
load capacity. The present invention also provides an actuation method. By applying
voltage to each piezoelectric stack, the two piezoelectric inertial
impact drive mechanisms generate inertial force, and then by adjusting the input
voltage of each piezoelectric stack, the size and direction of the inertial force generated by each drive mechanism can be changed to achieve
linear motion and rotational motion in a plane. The two cooperate to achieve large-scale rapid
crawling in any direction in the plane.