In order to improve the transmission inefficiency about clamping force control of Metal V-belt Continuously Variable Transmission(CVT)
a control method of clamping force based on slip is presented.Dynamic slip model is founded
and slip factor is set to correct target clamping force
at the same time
fuzzy controller is designed to control slip factor.Whole vehicle road test is did to validate the controlling effect of clamping force of the secondary pulley system.The result shows that clamping force of the secondary pulley system based on slip response quickly
and the fact clamping force can pursuit the object clamping force well.Also it lower the clamping force applied on the secondary pulley and improve the efficiency of the transmission.