Proportional integral derivative (PID) controller for pressure control of hydraulic system, controls actuator by creation of manipulated variable that is obtained by multiplication of reference value with amplification factor

摘要

The controller (100) controls an actuator in a control arrangement by creation of manipulated variable (u) for reduction of offset between the actual value (i) and the reference value (w) of controlled variable. The manipulated variable is obtained by the multiplication of reference value with the amplification factor (Ku) that is obtained by dividing one reference value by the actual value. An independent claim is included for control method of pressure of hydraulic system.