Modelling Electromechanical Systems FromMultiple Perspectives (original) (raw)
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In this work, a methodology and an integrated tool framework has been proposed for the preliminary design of electromechanical actuators. An in-house Modelica library has been developed to perform the sizing process. A CAD tool has been integrated with the system simulation software for automatic validation of the geometrical integration of an electromechanical actuator over a specific kinematic. The proposed framework is illustrated with the geometrical validation for an electromechanical actuator of a nose landing gear doors mechanism. Nowadays in Aerospace industry, new generations of systems based on electromechanical actuators technologies are beginning to replace the hydraulics ones [RR1]. This reconfiguration of actuation systems for aircraft can provide a gain in power management, operating mode, reliability and maintainability. This change in technology requires an overall rethinking of the design process and notably the use of multi-physics or multi-domain simulation tools...
Generalized Circuital Modeling of Electromechanical Devices
16th International Conference on Electrical Machines - ICEM 2004, 2004
The lumped-parameters modeling of electromechanical devices in terms of equivalent circuits and rigid bodies is widely in use by long time. In fact, it permits to draw important theoretical conclusions and to obtain handy analytical results useful for dynamic analysis. Nevertheless, this approach is often presented in reduced forms, e.g., assuming a single mechanical degree-of-freedom, magnetic linearity, 3-phase symmetrical windings, etc. This paper proposes a generalized treatment suppressing several of such hypotheses, leveraging on matrix notation and lagrangian notation for mechanical aspects to provide a powerful conceptual tool for the analysis of a wide class of devices.
Practical Considerations in the Modelling and Simulation of Electromechanical Actuators
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The work reported here was aimed at improving the practical efficiency of the model-based development and integration of electromechanical actuators. Models are proposed to serve as preliminary design, virtual prototyping, and validation. The first part focuses on the early phases of a project in order to facilitate the identification of modelling needs and constraints, and to build a top-level electromechanical actuator model for preliminary studies and sub-specification. Detailed modelling and simulation are then addressed with a mixed view on the control, power capability, and thermal balance. Models for the power chain are firstly considered by focusing on the key practical issues in modelling the electric motor, power electronics, and mechanical power transmission. The same logic is applied to the signal and control chain with practical considerations concerning the parameters of the controller, its digital implementation, the sensors, and their signal conditioning. Numerous or...