The Smooth Impact Drive Mechanism (SIDM) is a linear piezoelectric actuator that has seen practically applied to camera lens modules. Although previous SIDM actuators are easily miniaturized and enable accurate positioning, these actuators cannot actuate at high speed and cannot provide powerful driving because they are driven at an off-resonant frequency using a soft-type PZT. In the present s...

This paper presents design modification to the existing standard wheelchair by incorporating an improved propulsion system and also braking and tilting systems that allow its full control with only one hand. The proposed design has the propulsion system with a chain drive powered through a four-bar linkage driven by the main handle. The desired direction of motion is obtained by moving the leve...

This paper presents the novel hopping mechanism using permanent magnets for tiny asteroid exploration rovers. The main part of the mechanism consists of one movable magnet and two stationary magnets. The mechanism uses for hopping the impact force generated when the movable magnet sticks to the stationary magnet. The features of the mechanism are that the large impact force can be generated in ...

Page I. Gate Drive Requirements ................................................................................1 I. A Impact of the impedance of the gate drive circuit on switching losses............1 I. B Impact of the gate drive impedance on noise sensitivity.................................2 I. C Impact of gate drive impedance on "dynamic latching" ..................................2 I. D U...