Hydraulic intensifier
to the pressure level which the cylinder requires in accordance with its load at that moment. The fixed displacement motor is linked with the motor subject to secondary control and thereby removes the flow [...] Switching system which makes it possible to operate a differential cylinder in a network with impressed pressure ( constant pressure network ) without experiencing pressure losses due to throttles, and
Controller settings
Adaptation of controller properties to the respective task by changing the control parameters with the aim of optimising the controller .
Continuous operating conditions
Are characterised by numerical values of the individual variables with which the system can be operated without interruption (CETOP RP 100).
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
Analogue measuring technology
variables using analogue measuring instruments. The measured value is represented continuously and with the correct magnitude.
Delivery flow control
accordance with a reference variable s by regulating out the disturbance variables related to leakage losses or rotation speed fluctuations (Figure F 28) . For this purpose controllers with different reference
Pressure losses due to throttles
constriction). Another type of throttle loss occurs if in a system with constant pump the speed control is undertaken via flow valves ( control with throttle ). The losses that result are mostly considerable,
Piston type accumulator
Hydraulic accumulator with a free-moving piston as a separator between gas and hydraulic fluid (Figure K 19) . Since there is no separating wall made of rubber, the fatigue resistance is greater than for [...] for . In addition, the entire cylinder volume can be used for oil, with any number of gas bottles being connected downstream. Weak points are the seal inside the piston and the weight of the piston in
Loop line
multiple consumers. Compared with a stub line, the loop line enables: a balanced supply of pressure, i.e. there are smaller pressure fluctuations and smaller pipe cross sections with the same flow rate or pressure
Pressure flow characteristic of throttle shapes
flow. As (Figure D 89) shows, with a rectangular cross-section (a) there is a linear dependency between flow rate and adjustment travel. A triangular cross-section (b) has, with a low flow rate, a better