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Control in which the reference variable (n) is delivered by a time-dependent programmer . The programmer can be started by a trigger signal (DIN 19 226).

The signal parameter can only assume defined discrete values (or overlapping value ranges) (DIN 19 225).

Electrical signals which are issued depending on the path travelled. Switches with a contacting or –– increasingly –– non-contacting method of engaging through to hall generators. However, optical swi

1. Pressure intentionally generated by a resistance in a system (e.g. in the outlet line of a system). 2. Pressure to which the oil in a tank is subjected if the suction of the pump requires this. To

Valve tappets which are guided outwards must be sealed off. This is generally done using nut rings or O-rings.

Period of time, after which the outstanding instructions are reported (DIN 19 237).

Flow rate required for pilot actuation of a multi-stage valve. Its size results from the control volume and the desired reversal time. The pilot flow rate may become unexpectedly large due to the norm

Sum of all measures, which the system designer must take for a given pump (motor) to produce a quiet system (see noise creation in hydraulic systems). Specifically, this means: measures, which can red

Change in the specific resistance of a metal under a mechanical load (mainly strain). The piezoresistive effect occurs with all metals (including metal strain gauges), although it is particularly pron

Pump piston with a spherical piston area which uses the piston rings provided for sealing purposes. The piston shaft — unlike the spherical piston — is conical in shape and is responsible for taking t