Using Simulink

Mixed Continuous and Discrete Systems

Mixed continuous and discrete systems are composed of both sampled and continuous blocks. Such systems can be simulated using any of the integration methods, although certain methods are more efficient and accurate than others. For most mixed continuous and discrete systems, the Runge-Kutta variable-step methods, ode23 and ode45, are superior to the other methods in terms of efficiency and accuracy. Because of discontinuities associated with the sample and hold of the discrete blocks, the ode15s and ode113 methods are not recommended for mixed continuous and discrete systems.

Invariant Constants

Simulink Basics