Voltage/Frequency Proportional Control of Stick-Slip Micropositioning Systems

A new control type for stick-slip micropositioning systems is proposed in this brief: the voltage/frequency (U/f) proportional control. It gives more precise results relatively to the classical control algorithm. It is also an assembling of two classical controllers: the sign and the classical proportional controllers. A high stroke model of a stick-slip micropositioning system is first given. Then, we will theoretically analyze the performances of the closed-loop process with the U/f controller. Finally, we will give some experimental results obtained with different values of the proportional gains.