CAN-BUS
(Controller Area Network) is one of the classic field buses. It connects the individual participants with each other in a control structure. It has been on the market since 1986 and is therefore a proven [...] known protocols relevant for mobile machinery are CANopen, J1939 and ISOBUS. By using the CAN bus with its two-wire cable, time and weight can be saved during installation and commissioning. The number
Positioning error
which (may) occur when positioning hydraulic drives. They consist of; the Δs N, errors associated with hysteresis and the reversal error for the continuously adjustable valve (between 0.1% and 2 to 3%)
Dirt holding capacity
"apparent" leads to errors, as the word "apparent" is often left out, resulting in an association with the "real" dirt holding capacity, but the two are not connected.
Filter element
(exception: metal filters). The tissue filter elements used most frequently are generally designed with multiple layers as (Figure F 15) shows. The actual element comprises, e.g. a glass fibre tissue, which
Pressure filter
term pressure filter can also have a broader scope (as per EDIN 24 550). Then it covers every filter with the exception of the suction filter .
5-chamber valve
Directional valve with five annular channels in the housing for ports A, B, P and T. The spring chambers F 1 and F 2 remain outside the control area of the valve and can have a dedicated drain port (Figure
Throttle
flow resistance. Throttle is therefore the generic term for orifice and nozzle . Flow resistances with a largely linear dependence of the flow rate on the pressure difference ( capillary tube ) (Figure
Dead volume
e, but must be placed under pressure as the working cycle changes. The volume increase associated with this changes the natural frequency of the device, which is part of the dead volume. In addition, the
Accumulator charging valve
Special pressure switch valve with the task of switching the constant pump, which charges a hydraulic accumulator , to pressure-free circulation as soon as it reaches its charging pressure and to switch
Follow up control
piston velocity should correspond to this ramp function as accurately as possible. regulator controller with fixed set point