MODELING AND SIMULATION OF MECHATRONIC SYSTEM TO INTEGRATED DESIGN OF SUPERVISION : USING A BOND GRAPH APPROACH Mohamed Arezki Mellal Smaïl Adjerid Djamel Benazzouz Solid Mechanics and Systems Laboratory M’Hamed Bougara University M’Hamed Bougara University M’Hamed Bougara University Boumerdès, Algeria E-mail: mellal-mohamed@umbb.dz Boumerdès, Algeria Boumerdès, Algeria KEYWORDS Modeling, Simulation, Mechatronic system, Bond graph approach, Integrated design of supervision. ABSTRACT The research in mechatronics focuses on the design and implementation of reliable, secure and economic systems. Our study is to modeling the operative part of a CNC machine using a bond graph approach with optimal placement of sensors in order to achieve a model for an integrated design of supervision. The proposed model allows a conception technically feasible and economically realizable to be integrated into production lines. The generation of analytical redundancy relations can find the FDI (Fault Detection and Isolation) matrix, that optimizes the maintenance function. INTRODUCTION Mechatronics is the synergistic and systemic combination of mechanics, electronics and computers in real time, the value of this pluridisciplinary engineering field is to design powerful, reliable, economic and automated systems to allow control of complex systems (Bishop 2006). From this definition we deduce that each mechatronic system can be modeled and simulated with an efficient in the design phase. A unified modeling approach is necessary for analysis and mode. The graphical tool is well suited for this purpose. This methodology allows the display of the power exchange system, which includes storage, dissipation and transformation. In addition, this tool takes into account not only the generation of a behavior of the system, but it can also be used for structural and causal analysis, which is essential for designing control systems and surveillability. The flexibility of this tool allows us to add more elements such as losses or thermal effects. The causal and structural properties of the graphic language allows the modeler to solve the algorithmic level model in the formulation stage before the detailed equations have been derived, this context has been developed in (Samantaray and Ould Bouamama 2008). These properties can be used for the design of systems for monitoring and supervision, these methods are illustrated in (Ould Bouamama 2002; Djeziri et Ou. 2009; Medjaher et Sa. 2006; Cocquempot 2004). Therefore, this graphical method can be considered an integrated tool for computer-aided design. The bond graph, abbreviated by (BG) are, (Ould Bouamama and Tanguy 2006) : − Representation graphs of the dynamic behavior of systems regardless of the domain considered. − Graphs based on energy flow. − An object-oriented modeling of systems. − A powerful modeling tool for engineers. In the bond graph language there is a set of multiports which are necessary for modeling a physical system in a generic way using generalized variables of effort and flow. These elements are classified into three categories, (Ould Bouamama and Tanguy 2006): three passive elements (R, C and I), two active elements (Se and Sf) and four junctions (1, 0, TF and GY). The notion of causality has been developed in (Borutzky 2009). CASE STUDY In our study we model and simulate the operative part of a CNC machine using the bond graph tool to lead a model for integrated design of supervision. This machine consists of two parts: − Control part for machining program, instrumentation and monitoring display. − Operative part for piece machining. An electric motor drives through: set reductor and screw/nut, a table piece porter moving horizontally. The engine is powered by a voltage  ௜௡ and the table is marked with its rated position Pos(t), view figure 1. Figure 1: Presentation of the table. The parameters of the table are illustrated in the table 1, (Vergé and Jaume 2004): ࢂ ࢏࢔ Electric motor ࣓ ૚ Reductor ࣓ ૛ Screw/ nut F Piece porter Pos(t) Proceedings 25th European Conference on Modelling and Simulation ©ECMS Tadeusz Burczynski, Joanna Kolodziej Aleksander Byrski, Marco Carvalho (Editors) ISBN: 978-0-9564944-2-9 / ISBN: 978-0-9564944-3-6 (CD)