Discontinuous controllers
(Discrete) controller , in which the controller output signal is discontinuous despite a continuous input signal (switching controller) Examples: 2-point or 3-point controller (DIN 19 225).
Servo valve
For use in this is a group of continuously adjustable valves, in which a constant input signal brings about a proportional. A distinction is made between mechanical-hydraulic servo valves ( copying va
Seal leakage
Even an intact elastic seal will not always be tight. The reason for this is a complicated interplay involving drag flow , the direction of movement for the areas to be sealed, the shape and hardness
Frequency limit
Highest frequency of a periodic signal at which the signal is still just processed without errors. Frequency limit of a signal component : Inverse of the sum of the minimum pulse duration and the mini
Directional valves 2-way valves
Valves with two controlled ports: inlet and outlet. Examples: 2/2-way directional valves, 2-way flow control valve, amongst others
Control oscillations
Oscillations of signal variables in the which arise when compensating for changes to the reference variable or disturbance variables . The control oscillations extend the transition phase.
Supply of a control unit
Entirety of all functional units to supply the technical control and feedback control devices with energy. The term supply can be more clearly specified by adding supplementary terms as a prefix accor
Logic diagram
Neutral representation of a circuit diagram (for a function sequence) in accordance with IEC (DIN 40 700). The logic diagram is not specific to any component, i.e. it applies to hydraulic, pneumatic o