Two edge control
area. In this form, the two-edge control is easier to produce than the valve control with four edges , as only two control edges have to be adapted to one another. However, it does not achieve the force [...] 1. Hydraulic resistance control for a displacement chamber with a type A hydraulic half bridge (adjustable input and output resistance); use of both control edges of a continuously adjustable 3/2-way [...] is generally a valve control with four edges in the case of high response proportional valves (due to the radial clearance on the control spool).
Hydraulic accumulator
r pressure p 1 and the respective load pressure p L: This pressure difference also means a loss of energy (Figure H 25) . Tasks of an accumulator: Storing energy to cover peak needs or to support the pump [...] required, during filling with gas, in order to achieve the final pressure for the system when admitting the usable volume . Minimum operating pressure : The lower value to which the accumulator pressure may decrease [...] volume. Maximum operating pressure : The upper value to which the accumulator pressure may increase following admission of the usable volume (equal to the nominal pressure for the system). Usable volume
Pressure-limiting valve
is used to protect a circuit or a system against overpressure it is one of the most important elements in a system. It is set to the nominal pressure and should always be placed in proximity to the pump [...] Pressure-limiting valves limit the inlet pressure by opening the outlet to the tank via the function element (which is closed at rest) on reaching the set pressure. This action occurs by opening against [...] the actual maximum pressure during operation is dependent on the respective flow (flow rate from P to T) and the oil viscosity that is present during this. In the case of higher flow rates, this may mean
Nominal flow rate
the conditions for which a device has been designed based on its application and when not subjected to a load (CETOP RP 100). For continuously adjustable directional valves : Flow rate at the nominal value [...] nominal pressure for the system). For switching directional valves : Flow rate causing a pressure drop of 1 bar when it passes through the valve.
Beta value (β value)
and after passing through the filter with a specific pressure drop (Figure B 13) : Therefore at β x = 1 no particles are removed; 50 % of the particles are removed at β x = 2. The minimum practical value [...] practical significance. Simply stating the β x value is insufficient. Instead all parameters related to defining the β value must be stated, i.e. the complete test report. In ISO 4572 only the test procedure
Hydraulic power pack
energy into hydraulic energy. This is also referred to as hydraulic pressure being created and a flow rate being provided. Using connections enables this to be used for drive in machines. Further components [...] particularly small exterior dimensions to be achieved for the power pack. As the electric drive is in the hydraulic oil, the lost heat from the motor is transferred to the oil. If the switch-on duration is [...] consisting of a drive motor, hydraulic pump and hydraulic fluid tank. The drive motor is connected to the hydraulic pump via a shaft and drives this. The motor and pump can be installed on the tank, as
Inductive position measurement
The output voltage at the bridge rectifier is proportional to how far the iron core of a solenoid has been moved. The measured signal then needs to be demodulated and smoothed again in the measuring amplifier [...] These transducers, which are also contact-free, are particularly suitable for short distances (0.1 to 3 mm). A major area of application is measurement of the distance shifted for continuously adjustable [...] proportional to the position of the measured object. Following rectification and filtering of the output signal, a DC voltage signal will then be present. At high oscillator frequencies (50 to 500 kHz), it