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Quotient of the complex amplitudes of acoustic pressure and acoustic flow (acc. DIN 1320). The acoustic impedance describes the acoustic behaviour of a component. For hydraulics this quotient comprise

This is generally synonymous with a . In the event of movement control, the actuator converts the electrical signals of a controller into mechanical work. One example of this is the opening and closin

Sensor that, under load, outputs a voltage that it generates internally (e.g. thermocouple). It requires a DC amplifier to amplify the signal. Opposite: passive sensor

1. A term only used infrequently these days for hydraulic accumulator . 2. Register in a computer system for carrying out mathematical operations, this register contains an operand prior to carrying o

Combination of various devices that carry out one or more functions.

Gearboxes with an external power split comprise a mechanical summation gearbox (planetary gearbox) in the direct flow of power and an adjustable gearbox (hydrostatic transmission) in the parallel circ

On valve-controlled radial piston machines on which the pistons are supported on an eccentric element (internal support) the supply of the hydraulic fluid on motors is from the exterior onto the pisto

The displacement units in a hydrostatic displacement machine (vane, piston) are supported on an outer raceway that at the same time defines the stroke of the displacement unit due to the eccentric mou

Characterises the chemical composition as well as the physical state of a new hydraulic fluid . Here is must be noted that even new oil is never absolutely clean, instead on average it corresponds to

Time that would be necessary to reach an agreed value for the task or controlled variable if its max. rate of change from the initial value of the output variable to the agreed value were to remain ef