Simulation and Control of Variable Speed Hydrostatic Power Transmission System

چکیده مقاله

In recent years, needs for low fuel consumption and reduction in environmental loads have rapidly increased in industrial vehicles and construction machinery due to growing global environmental awareness and a rise in crude oil prices. The response to the above has become an important element in the development and manufacturing of Hydrostatic Power Transmission (HPT) systems for vehicles. Hydrostatic transmission systems are the best choice when variable output velocity or high torque at low speed is required in engineering applications, especially in the field of manufacturing, automation and heavy duty vehicles.
This project involves the replacement of a conventional gearbox transmission system by an innovative variable speed HPT system. In this regard, simulation and control of a specific HPT system for vehicles is presented. The Matlab/Simscape and Simulink software environment are used to develop the transmission system model, prime mover and longitudinal vehicle dynamics, which are observed as the perfect rapid prototyping design tool achieving the desired objectives. The aim is to achieve the best performance of vehicle and its power transmission system with different inputs of the prime mover throttle signals. The simulation results with unit step and unit ramp inputs of the throttle signal in flat and inclined roads illustrate the great performance of the developed variable speed HPT system.

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