Apparatus and method for stiction compensation in a process control system

摘要

An apparatus, method, and computer program for stiction compensation in a process control system are provided. A determination is made as to whether a valve is suffering from stiction. A control signal provided to the valve is adjusted in order to at least partially compensate for the stiction suffered by the valve. Adjusting the control signal could include (i) adjusting the control signal to cause the valve to move into a steady-state position and (ii) adjusting the control signal to cause the valve to remain in the steady-state position. Adjusting the control signal to cause the valve to move into the steady-state position could include (a) adjusting the control signal to cause the valve to move from a current position into a new position and (b) adjusting the control signal to cause the valve to move from the new position into the steady-state position.