Modeling and Simulation of Time-Varying Delays

This paper presents the numerical methods for modeling and simulation of fundamental continuous time-varying delays. Continuous time-varying delays are categorized as variable time delay and variable transport delay. These two fundamental delays are formulated and implemented as two Simulink built-in blocks. The difference between these two delays are discussed. With these two fundamental time varying delays, physical system such as convey belt, control system with delayed control signals, delay differential equations, can be easily modeled and simulated.