With the analytical solution, we check how accurate the results of the program DV1ETRP3 program approaches the analytical solution,

To run the Program DV1TRP3, follow the next steps:

1: Start the program DV1ETRP3 from the menu.

2: Enter the step size dx which determines the accuracy of the results. A smaller step size gives better results but takes more processor time. As rule of thumb, we take dx=(a/10b). (a/b) is also called the time constant  τ  (say tau) of a system. More information about step size choice is available on the page: 

3: Xmax is the maximum X in which area Y is solved. We take 5 times the time constant = 5*0.1/0.7 

4: Y(0) is the initial value of Y. In this case, we take Y(0)= 0. (The initial value depends on the history of the process.)

5: a=0.1, b=0.7

6: To define f(x) there are 2 possibilities: direct (in our case f(x)=0.6) or by a special input already generated with the program Funcgen, Funcst1 or PWM. 

8: Now the program is ready to solve the problem. All the steps and the results are shown here below. By default, only the output signal is shown, but you can view the input signal too by activating Y6.