Description: variable variable that maps the controlled variable and is fed back to the comparator; Name: feedback variable
Description: variable quantity, which represents the controlled variable and is returned to the comparing element; Name: feedback variable
Description: average speed given by the stroke length multiplied with the number of complete pumping cycles of the piston, plunger or piston attached to the diaphragm per minute (stroke per minute or pump crank speed); Name: piston velocity