Hi:

I use mathematica to solve the control system, after encountering the following questions:

1. The controller can not and bring the original system, you must manually organize your own to SystemsModelFeedbackConnect

2. For the first question, I have to manually connect the control system, using OutputResponse solving numerical results, my input is 600 * UnitStep [t] + 10 * UnitStep [t-200], that is interfering in the first 200 seconds, but OutputResponse errors, using Matlab / Simulink is no error, the calculation method Matlab / Simulink using ode23tb Method

3.I find NDSolve can specify Metheod, but OutputResponse unable to set their own calculation method, for example ode23tb, ode45 etc.

Thank you very much!!