Square Root Function Improves Thermostat:
9/30/99 EDN-Design Ideas / Perhaps the most
elementary rule of control-loop design theory is
that feedback-loop performance is fundamentally
linked to the careful choice—and stability—of loop
gain. Insufficient loop gain leads to poor setpoint
accuracy. Too much gain can induce feedback
instabilities, such as overshoot, ringing, and,
ultimately, oscillation. Therefore, the greater the
accuracy you expect from a control system, the more
critical maintaining near-optimal loop gain becomes. |