PROPORTIONAL CONTROL ACTION (P)
The action of a controller whose output signal V (or Φ) is pro- protonate to the deviation θ.
θ is the difference between the measured value of the control- led condition θo and the command signal θi.
V ∝ -θ
V = -K1 θ
The negative sign denotes that the correction signal is opposite in direction to the deviation. K1, a constant depending on the controller characteristic, is called the proportional action factor.
Potential correction Φ (change of actual controlled condition γo) is proportional to the movement of the correcting unit (which depends on V).
Φ ∝ V
Φ = C1 V
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