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This paper presents and discusses the design of SMA driving a micro biped wall-climbing robot. The robot has a symmetrical configuration, and its motion is controlled by shape memory alloy (SMA) actuator that replaces the traditional motor. SMA actuator overcomes the problems by traditional motor driver such as complex structure, quality. According to the DSP technology, design the DSP controller for shape memory alloy driving to achieve the motion of the robot and Check the feasibility that the micro biped wall-climbing robot actuated by SMA.