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: Determined proportion of pump available power input, Pa, which is delivered as pump power output, Pu, after satisfying the losses resulting from friction due to the relative motion of internal surfaces and internal leakage ; Name: Hydraulic efficiency