Actuator
Hydraulic motor performs rotational movements. The Hydraulic cylinder performs movements in a straight line, thus transferring forces. In aircraft hydraulics the term is used for servo hydraulic . Actuator
Pitot tube
direction of the flow ( Figure P 9 ). Pressure measured with this kind of open tube will change in line with the angle, since dynamic pressure only acts in the direction of the flow. In order to avoid
Quiescent flow
quiescent flow comprises the flow for the first stage and the leakage for the second stage. It changes in line with the inlet pressure and the input current and reaches its maximum level at hydraulic zero ( Figure
Double acting cylinder
opposite directions. The surfaces are of the same size or different sizes. The cylinders have two line connections that are separate from each other. By feeding the hydraulic fluid through the two connections
Transfer factor
variable to the input signal, i.e. the gradient of the characteristic curve . In the case of non-linear characteristic curves, the area for which the transfer factor applies should be stated. A differentiation
Identification of a system
stationary and dynamic characteristics. This makes it necessary to define the structure of the system (linear?, which order?, etc.) and determine the gains within the individual blocks. The result is the respective
Technical cybernetics
sense. For example, as a technical system with a certain dynamic performance, which is highly non-linear, the hydraulic system has specific behaviour. The same applies for electrical or mechanical drive
Filter selection
On pressure filters : nominal pressure , Intended installation location (suction, pressure , return line filter ).
Phase-frequency response
Part of the description of a linear, time-invariant transfer element whereby the phase-frequency response represents the frequency-dependent element of the angle through which an is shifted in relation
Transfer element
19 229). A differentiation is made between a linear transfer element, which has a linear relationships between the input and output signal and a non-linear transfer element, in which the relationship between