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Preliminary note : The traditional language of hydraulic engineers takes particularly little notice of the difference between control and . Therefore, adjustment processes frequently involve talk of "

Displacement machine in which the geometric displacement per cycle can be changed. For design-based reasons, this is only possible for vane and piston constructions. Variable pumps can be adjusted fro

Throttle forms

Multi-circuit pump normally with an inclined axis design, but also a design according to the swash plate principle, in which two drives are included in one housing. In the case of an inclined axis des

In the case of : signal converter with auxiliary energy used to amplify the power (DIN 19 226).

All components required to activate a continuously adjustable valve (not just for amplifiers) are housed on a card (normally with a European format) ( Figure V 19 ). This includes not only control amp

Here, linearity refers to the relationship between the input measured variable (e.g. distance, pressure) and the electrical , which should remain as constant as possible. Where this is not the case, i

Controllers where the relationship between input variables (system variables) and output variables ( correcting variables ) is a linear one. Linear regulators also include both single loop controllers

This assumes there are linear relationships within the . As well as the controller (linear controller), the model ( model of open loop system ) for the controlled subsystem must also behave in a linea

System whereby electrical signals are converted into light signals, relayed inside optical fibres (glass or plastic fibres) and then converted back into electrical signals ( Figure L 19 ). Optical fib