Surface roughness
protection for elastomers, which are liable to become scratched, very strict regulations are laid down with regard to surface roughness: For the purpose of sealing non-moving surfaces, an R a of 0.5 to 1.5
Oscilloscope
deflects the beam from a cathode ray tube (Braun tube) in proportion to the input signal and time. With a cathode ray oscilloscope, it is possible to represent things on the screen, set things down on paper
Radial piston pump
Construction type of displacement pumps with multiple pistons, which, as in the radial piston pump, are arranged in a star shape around and perpendicular to the drive axis. They can be subjected to pressure
Friction conditions
liquid friction, μ = 0.1 to 0.2. Mixed friction is characterised by the simultaneous presence of areas with lubricating film and touching solids, which causes a frictional force that decreases as relative speed
State controller
therefore particularly well suited to controlled subsystems that are hard to stabilise or subsystems with a low natural damping, as it generates sufficient damping at higher loop gains . The state controller
Separation capability
important here to separate out solids in the tank or in the filters before they are drawn in again with the fluid. Dispergent oils.
Closed circuit
which in turn is supported by the drive motor (e.g. combustion engine), making it possible to brake with a closed circuit. No valves are necessary in the power flow to control the motor. Alternative: open
Fieldbus
The communication is co-ordinated by serial protocols (software) that ensure signal transmission with the correct timing, a high level of immunity to interference and flexibility in relation to the number
Cylinder
the pressure p of the transfer medium on the piston area A K (the most common form of a cylinder): With this approach, forces from just a few N up to 300,000 kN can be applied by a single cylinder during
Semiconductor memory
available up to 1 Mbit. Static RAM, SRAM : The storage cells consist of bistable circuitry elements with a functionality similar to that of a flip-flop. The information is not volatile; it is stored until