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Square Root Function Improves Thermostat: 09/30/99
EDN-Design Ideas / (added 6/03) 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. |
