id	keyword
fumecheng-6852	spring
fumecheng-6852	stiffness
fumecheng-6852	fig
fumecheng-6852	torque
fumecheng-6852	magnets
fumecheng-6852	angle
fumecheng-6852	shaft
fumecheng-6852	output
fumecheng-6852	control
fumecheng-6852	design
fumecheng-6852	section
fumecheng-6852	characteristics