Putting an actual system on a computer for simulation will go through the following eight steps: (1) System definition: according to the purpose of system simulation, the boundary and constraint conditions of the studied system are determined. (2) Establish a mathematical model: abstract the actual system into a mathematical expression or flow chart. (3) Model conversion: the mathematical model of the system is converted into a simulation model that can be processed by the computer. (4) Design simulation experiment: Given the external input signal of the system, set relevant parameters and variables. (5) Model loading: input the converted simulation model into a computer in the form of a program. (6) Simulation experiment: Conduct various designated experiments on the simulation system in the computer. (7) Model verification: modify and test the model according to the performance requirements that the system should meet. (8) Submit the simulation report: analyze and sort out the simulation data and provide the simulation final result report.