Hose assemblies
The part of a hose line , which enables it to be connected to devices. In addition, the (fixed) fitting must be connected to the (elastic) hose such that this inclusion still has a quadruple safety level
Filter in main conduit
Filters in the main conduit include the following: Suction filter (a) Low-pressure filter (b) Return line filter (d) If filtering is only required for a subflow, part of the flow rate is channelled past the
Displacement machine (displacement unit)
according to the reciprocation principle, with the displacement units (generally pistons) performing a linear movement. All displacement machines – with the exception of the screw pumps – can be classified using
Suction throttle control
Throttle units are built into the suction line of hydraulic pumps and compressors to specifically influence the filling of pumps or the compression pressure in the case of compressors. The suction throttle
Status monitors
state variables of the subsystem and the simulated state variables of the observer arise due to non-linear influences. The matching achieved in this way is normally completely sufficient in practice. The
Integrated control
Examples: mechanical-hydraulic pressure reduction in flow control valves or for electro-hydraulic linear amplifiers where the measuring spindle is responsible for feeding back the piston travel. Electr
Annular gear pump/motor
from one hole in the ring to another, each chamber fills and empties once. Due to the unfavourable (linear) seal, annular gear pumps/rotors are only suitable for moderate pressures (up to around 160 bar)
Flow resistance of filters
pressure fluid and therefore on its actual temperature (Figure F 13) . As the pressure drop is not linear, but instead corresponds approximately to a 3rd order function, a filter with a differential pressure
Laplace transformation
Laplace transformation is a method for solving linear differential equations with constant coefficients based on given initial conditions. It can also be used for fault functions which give the value zero
Signal flow diagram
for certain contexts (e.g. circuits for addition points ( Figure S 58 ). Each signal is shown by a line of action with an arrow at the top (DIN 19 226). The functional relationship may be illustrated by