Description: 1. Numerical Integration function with fourth-order Runge-Kutta method RK4 2. Inlet parameters of this function: the system dimension dimension, the simulation time tspan. 3.tspan Formats for [a: h: b], wherein A represents a start time, h is the step length, b indicates the termination time. The equation of state of the simulation model, the coefficient matrix of the equation as well as the system initial value of the output is stored in the file input information.txt. The 5. Simulation results are stored in a file result.txt. Running example: the the M file RK4.m and input information.txt of are placed in Matlab current working directory, then enter the following command in the Command Window: dimension = 3 tspan = [0:0.01:2] RK4 (dimension, tspan) Enter, open Matlab' s current working directory folder find the file result.txt, you can see the simulation results.
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RK4.m
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