This is a simple tool for simulating PID controller with configurable parameters in a negative unit feedback loop.
The structure of the PID controller is the parallel structure, cannot be changed for this simulator.
The simulator supports visualizations of impulse response, step response, Bode plots, Nyquist plot, Root-Locus plot.
This tool is developed for educational demonstration purpose, not meant for extremely accurate scientific visualization.
Thi is a portable version, just download the zip file and unzip, there is a all-in-one executable file (.exe) which you may run directly.
The variable you use for the transfer function must be the Laplace variable 's'. The rule for filling in your symbolic transfer function follows the rule of sympy.