A control mode in which there is a continual linear relationship between the deviation computer in the controller, the signal of the controller, and the position of the final control element.
Control in which the amount of corrective action is proportional to the amount of error.
A control mode which generates an output correction in proportion to error (the process variable's deviation from setpoint).
(1) An element of PID control. (2) Actions that change the controller output in proportion to the setpoint error. Proportional control never achieves the setpoint and there is always an offset error. See PID control.
A control in which the amount of control action is determined by an error signal multiplied by a gain. The gain term may be specified directly or as the reciprocal of a theoretical band over which error causes a 100% control action (Analog algorithm is m(e) = P(e).) (See also PID, Integral and Derivative controls.)
A controller relationship or transformation in which the controller output changes in proportion to the error signal. The error is multiplied by a term called the Controller Gain.
A control action with an output that is to be proportional to the deviation of the controlled variable from a desired set point.
A mode of control in which there is a continuous linear relation between value of the controller variable and position of the final control element (modulating control).
A proportional control system is a type of linear feedback control system. Two classic mechanical examples are the toilet bowl float proportioning valve and the fly-ball governor.