Artificial Muscle

Compliant amplified shape memory alloy actuator (CASA)

• Shape memory alloy-based high-power artificial muscle actuator

• Lightweight (0.22 g) and thin form factor (5 mm of height)

• High power density of 1.7 kW/kg, an actuation strain of 300% under 80 g of external payload

• Suitable for various applications such as bio-inspired robots and wearable devices

• High frequency actuation (10 Hz)

Control of SMA actuator via an electrostatic capacitive sensor

• SMA-based artificial muscle actuator with a self-displacement sensing function through electrostatic capacitive sensing. 

• Capable of position control (100 μm step and sinusoidal response) through the low-profile capacitive sensor, as well as maintaining a high power-to-weight ratio and payload capacity (0.22 g weight of the actuator and 20 g payload). 

• 1-degree of freedom (DoF) mirror tilting device to evaluate the controllability of this actuator,