Study on the Application of Fuzzy Controller in Hydrostatic Transmission System of Heavy Earth Moving Machines
Keywords:
Fuzzy Controller, Hydrostatic Transmission System, Earth Moving, Machines.Abstract
A simple hydrostatic transmission system (HST) mainly encompasses an engine (diesel or electric), a variable displacement hydraulic pump and a variable displacement hydraulic motor. By monitoring the rotational speed of the prime mover and administering the hydraulic components displacements, the final output speed of the HST is regulated. Conventionally, a PID controller has been utilized for the controlling of speed but it faces the drawback of causing fluctuation in the speed control system’s dynamics when speed is being varied. The paper takes in account the application of fuzzy control in dealing with various issues related to off road vehicle’s HST systems such as detecting slippage, speed control of motor, controlling accuracy and position, energy regeneration, etc.
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