Design And Realization Of Real-Time Simulation Platform For Control Process

In this paper, two methods of establishing simulation plant models are developed, based on the theory of hardware-in-the-loop simulation. The first method uses MATLAB/Simulink as a plant model. Employing S-Function to create a real-time environment, we run the plant model in real-time and realize data exchange by DDE and AD/DA communication between MATLAB and the monitor platform software. The other method uses the electric simulation. The device named Process Simulator - with circuit elements - is really important in this method. Based on the electric comparability between the model circuit and the real system, we can use the Process Simulator to construct the plant model.By using the hardware-in-the-loop simulation, we linked the plant model which is established by the two methods, to the real controller, and constructed the whole control process real-time simulation platform. The simulation environment is much similar to the real one, so the function of the controller can be verified rapidly and accurately; faster and more accurate tuning methods can be achieved; new types of control systems and arithmetic methods can be realized; and the bugging time on the spot can be reduced.The method to build the simulation platform is straightforward. Simulation experiments have been performed to validate the feasibility and flexibility of the simulation platform.This kind of simulation platform is also compatible with the control software based on IEC 61131-3 Standard. Through the communication with the model, the controller based on IEC 61131-3 Standard can work independently.