| The main objective of this research project is to design and simulate a multi-domain system under a unique work environment. This system integrates a control sub-system, an electrical sub-system and a mechanical sub-system. Indeed, the digital simulation is a critical part in the research and design process to complete the goal of prototypes design-cost reduction and time diminution. This objective can be fulfilled by using specific software tools based on the complementarity between the different domains studied. For this reason, this project is realized under the Matlab/Simulink environment which has different toolboxes dedicated to the simulation of mechanical and electrical systems with their controls.; In order to be familiarized with the Matlab/Simulink environment, the first multi-domain system designed is the winding machine. This system, used in the paper industry, consists to control the electrical motor torque. This motor drives a coil who's inertia and mass are increasing while the paper is winded.; The second case study is the powertrain system of a hybrid electric vehicle based on the Toyota Prius car (THS II system). This system has an electrical power supply coming from a battery and a primary energy source from an internal combustion engine.; The Toyota Prius architecture is called serial/parallel architecture. The system has an internal combustion engine and two electrical motors. Depending on the desired mode of operation, the internal combustion engine provides its mechanical power to the wheels and/or turns the generator, which in turn, drives the motor. The electrical motor can be supplied by the generator and/or by the battery. A power split device splits the power coming from the internal combustion engine between the wheels and the generator in order to use each motor in its high-efficiency region. Therefore, the overall powertrain energy efficiency is increased.; The simulation has been made in order to represent the behavior of the model for different system operation modes (starting, driving under normal conditions, sudden acceleration, braking). The results show that the behavior of the mechanical system and the electrical system was respected. The dynamic characteristics of the vehicle (acceleration, speed) are coherent for this kind of vehicle. Also, the model shows the complementarity between the Physical Modeling toolboxes to model and simulate complex electro-mechanical systems. |
