Model-Based Control - Real-Time Rendering: Computer Graphics with Control Engineering - page 87

PID control technique which is a superior approach to the conventional PID control
design. It does not require manual tuning of its gain parameters and constitutes a
viable solution for achieving performance targets in real-time rendering
In summary, we have shown by our experiments that the PID controller is effective
in keeping the output of a rendering process close to the user defined performance
target for linear rendering system models and when gain scheduling is adopted for
larger operating ranges.