Closed loop synchronisation control
values (synchronisation error) can be used in the control system to increase the synchronisation accuracy (e.g. master-slave principle). The closed loop synchronisation control can be implemented electrically [...] control systems there are various ways of realising this action: in the simple form the first actuator can be open loop controlled and the second closed loop controlled, where the actual value of the open loop
Propagation of error
measured result is a function of one or more measured values , then the error on the measured result can be determined based on the law of error propagation . It describes the propagation of the measurement [...] form of covariance matrices as an indirect measure of the uncertainty. More detail on this aspect can be found in DIN 1319 Part 3 and VDI/VDE 2620 Part 1.
Bottom end of a cylinder
The closed end of a cylinder . It can house the rear end position damping and/ or the mounting of the cylinder.
Continuous pressure
Constant pressure with which a device or a system can be loaded during the intended lifetime in defined operating conditions (DIN 24 312).
Plug-in connection
Connection for hoses in accordance with DIN 20 043, which is quick to fit without the use of tools and can be detached.
Male fitting
Pipe connection that can be undone and that is designed at one end to screw into a device bore ( pipe fitting ).
Indication range
Range of measured values that can be read on a measuring instrument. This range is not necessarily identical to the measuring range .
Function diagram
steps and their sequence for a switching cycle are defined, as can be seen in (Figure F 42) . This representation of the individual functions can be further supplemented by the oil consumption diagram and [...] and the accumulator volume diagram. As at the same time signals that trigger a function can be added, mostly with their signal elements , the function diagram also represents a graphic link between the signal
Status monitors
position control systems , namely velocity and acceleration, can be taken from the observer. Alternatively, the velocity and acceleration can also be found by differentiation. [...] required for a state controller State variable cannot be measured or are difficult to measure, this can be replaced by monitoring the behaviour of these variables (Figure Z 9). To that end, a mathematical
Drag flow pressure
Pressure, which builds up under certain constraints in front of a piston rod seal and which can reach several times the nominal pressure of the system. The drag flow pressure is caused by the drag flow [...] the sealing chamber ( Figure S 29 ). The best remedy is a spiral-shaped nut in the guide bush, which can remove the scraped off oil volume without pressure.