Linkping University Electronic Press

Title:	Signal-Simulink: Hybrid System Co-Simulation
Authors:	Stéphane Tudoret
Series:	Linkping Electronic Articles in Computer and Information Science ISSN 1401-9841
Issue:	Vol. 4 (1999), No. 020
URL:	http://www.ep.liu.se/ea/cis/1999/020/

Abstract:	This report presents an approach to simulating hybrid systems. We show how a discrete controller that controls a continuous environment can be co-simulated with the environment (plant) using C-code generated automatically from mathematical models. This approach uses SIGNAL with SIMULINK to model complex hybrid systems. The choices are motivated by the fact that SIGNAL is a powerful tool for modelling complex discrete behaviours and SIMULINK is well-suited to deal with continuous dynamics. We present various alternatives for implementing the communication between the plant and the controller, and how the MATLAB code generation mechanism in Real-time Workshop can be used for this purpose. Finally, we present interesting scenarios in the co-simulation of a discrete controller with its environment: a non-trivial siphon pump proposed by the Swedish engineer Christofer Polhem in 1697.

Abstract:

This report presents an approach to simulating hybrid systems. We show how a discrete controller that controls a continuous environment can be co-simulated with the environment (plant) using C-code generated automatically from mathematical models. This approach uses SIGNAL with SIMULINK to model complex hybrid systems. The choices are motivated by the fact that SIGNAL is a powerful tool for modelling complex discrete behaviours and SIMULINK is well-suited to deal with continuous dynamics. We present various alternatives for implementing the communication between the plant and the controller, and how the MATLAB code generation mechanism in Real-time Workshop can be used for this purpose. Finally, we present interesting scenarios in the co-simulation of a discrete controller with its environment: a non-trivial siphon pump proposed by the Swedish engineer Christofer Polhem in 1697.

Original publication 1999-02-21	Postscript Checksum Checksum (old) Information about recalculation of checksum