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Controller concepts

Control unit of a machine tool, which only issues an output signal if it is actuated with both hands simultaneously. Two-hand controls are mandatory for manually operated presses.

If the oil in a system is intended to remain practically free from air (e.g. in aircraft hydraulics), the entire circuit must be placed under a slight excess pressure (approx. 0.3-0.4 bar). This happe

Only for continuously adjustable valves: Degree of deviation of the average flow rate signal transfer factors of the positive and negative signal range. It is determined using the difference of both a

Number of basic functions processing the signal ( n s ) in relation to the number of inlets and outlets ( n e , n a ): When calculating n s: a) for the equivalence and antivalence functions, the numbe

The transport of data between digital devices may take place either in be parallel or in series. In the case of parallel transmission, one channel (one line) per bit is required, whereas in series tra

Flow control valves

Device which measures the temperature or temperature difference of a medium. The measured value can be read directly (e.g. in the case of a liquid thermometer), but can also be fed to a display unit a

Ring-shaped (loop) hydraulic fluid line to supply multiple consumers. Compared with a stub line, the loop line enables: a balanced supply of pressure, i.e. there are smaller pressure fluctuations and

Applies to elements (step control elements) which assign to several value ranges for an input signal in the steady state the same number of different values as for the . Elements featuring two-point p