Impedance Z
General form of resistance. Impedance Z is a complex physical variable (actual and notional element), which takes the following form R = resistive element of resistance jωL = inductive element of resi
Hydrostatic energy
Energy produced by the effect of the pressure of a fluid.
High pass (filter)
Electronic circuit that allows high-frequency signals to pass through unchanged, but results in a reduction in amplitude and a phase lead at low frequencies (Figure H 7) .
Velocity amplification
Defines the degree to which the velocity x at the zero point (y = 0) increases as a function of the deflection of the control element y, if the load is zero (Figure G 12) .
Back pressure
Pressure that acts against a force or another pressure over an area (according to DIN 24 312).
Intermittent operation
Intermittent duty is one of the other Nominal mode of operation denoted in the international standard IEC 60034-1. Hydraulic power packs work in intermittent operation if they are switched on and off
Sequence control
Sequential control system that is called a "process-dependent sequence control" according to DIN 19 237.
Equivalent time constant
This includes the Delay T u as the time defined by the time from the arrival of the control signal to the intersection of the inflection line with the abscissa and the Settling time T g as the time de
Screen filter
Filter with screen fabric as an active filter element. Screen filters are made for a filtration grade up to a maximum of 25 μm, as the ratio of filter surface to free pore space is too unfavourable be
Pump direction switching
There are two possible methods available for enabling a (relatively) low-pressure circulation of the pump delivery flow if it is needed elsewhere (excluding turning off the drive motor): The three-way