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Control of the flow rate of a hydraulic system by flow resistances in general with the objective of controlling the velocity of a cylinder or motor. For this purpose flow valves , manually controlled

Location in a device at which the flow cross-section is constricted and therefore a throttle effect (increase in resistance) occurs.

Combination of throttle valve and such that the hydraulic fluid flow in one direction must flow through the throttle (and is reduced in the process), while in the other direction the hydraulic fluid f

Throttles as an independent element in the context of flow resistances are used to change a flow rate. A differentiation is made between constant throttles with the two forms of nozzle and orifice tha

Unintentional change in a measured signal due to the effect of a external variables that change over time, e.g. temperature drift.

Servo valve

Valve with three switching positions (e.g. forward-stop-backward). The number of positions is stated after the number of ports, e.g. 4/3 directional valve: 4 ports, 3 switching positions.

Controller on which three physical variables are either measured or otherwise acquired and fed back. It corresponds on 3rd order systems to a state controller . On higher order systems (e.g. 5th order

4/3 directional valve with three annular channels in the housing for the three ports A, B and P (Figure D 42) . The 4th port T is to the spring chambers F1 and F2 that are connected together via a con

In principle the rotation speed of a hydraulic motor is defined by the ratio of the flow rate supplied Q 1 to the displacement of the motor V 2: The highest rotation speed is reached on fixed displace