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This paper presents how to use an ultrasonic motor, which features high torque at low speed, small size and low weight, as an actuator in the flutter control of a two-dimensional airfoil section. The paper begins with the design of a two-dimensional airfoil model with the piecewise-linear torsional stiffness in pitch direction and a control surface driven by an ultrasonic motor. Then, it gives the...
The paper deals with the motion of turning in place of a spherical robot for military reconnaissance and unknown environment exploration developed by us. The robot belongs to a nonholonomic and under-actuated system. The robot has 3 DOF and 2 inputs. The motion of turning in place can make a spherical robot with higher dexterity and environmental adaptability. The mathematical model of the turning...
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