Control Systems
PID, transfer functions, Bode & stability
PID Controller Tuner (simulation)
Tune Kp, Ki, Kd interactively
Transfer Function Explorer
Build and analyze transfer functions
Bode Plot Visualizer
Magnitude & phase plots
Nyquist Plot Reference
Nyquist stability criterion
Root Locus Concept Tool
Root locus shapes and rules
Step Response Simulator
Time-domain step response
Feedback Control Concept Builder
Build closed-loop diagrams
Control System Stability Checker
Routh-Hurwitz stability test