Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
TIME-VARYING NONLINEAR DYNAMICAL SYSTEM ANALOG COMPUTING CO-SIMULATION
Submission Author:
Atila Bueno , SP
Co-Authors:
Rodolfo Machado, Paulo Serni, Atila Bueno, José Manoel Balthazar
Presenter: Atila Bueno
doi://10.26678/ABCM.COBEM2017.COB17-0125
Abstract
Usually, analog computation is applied to solve linear time-invariant dynamical systems, due to the easy design of analog circuits to perform integrations, sums and gains. However, nonlinear dynamical systems demand much more complicated mathematical operations. This work presents a technique of co-simulation for a time-varying nonlinear dynamical system based on integrating analog computation with data acquisition system and control software in order to modify the dynamical system gains. This technique was applied to simulate a bench with three connected tanks, where the main objective was to control the level central tank. There are two pumps to supply water to the left and right tanks and this last has a return to reservoir. The pump flows are the control variables. The right tank and the flow from it to the reservoir are calculated by an analog computation simulator. The controller was developed using the LQG/LTR technique and the algorithm is responsible to communicate with the plant and the simulator, and to run the control loop.
Keywords
nonlinear dynamic systems, analog computation, Simulation, co-simulation
