Speed Ratio Control Architecture Design of Planetary Gear Train Power Assist Module

Abstract

This thesis aims to develop an innovative power assist module which is capable of the active speed ratio adjustment By assembling a power-assisted motor to the second input port of the planetary gear train the characteristic of power transmission between input port and output port can be adjusted and controlled with the actual application need With the goal of power assistance two kinds of speed control system schemes are investigated with the purpose of speed ratio adjustment and control; one is semi-closed loop speed control which is based on the kinematics speed relationship of planetary gear train and the other is full-closed loop based on the feedback signal of output port speed With the MATLAB software simulation result we can demonstrate the different possible responses of the two schemes which are effected by loading’s disturbance or the uncertainty of system coefficients in the actual application Also the thesis founds a hardware scheme of the power assist module In order to reach the application purpose of regulating the speed ratio of transmission system a suitable regulation strategy for the second input port power-assisted motor is designed in accordance with the setting range of the speed ratio regulation input port speed signal and output port speed signal Finally the feasibility of the analysis and the proposed control method is verified

Date of Award	2019
Original language	English
Supervisor	Mi-Ching Tsai (Supervisor)