Proportional control technology
with the valves and the amenability to control via electrical signals of the functions for flow rate based on direction, size and pressure . In hydraulics : Here, regardless of whether a control or feedback [...] of electronic signal processing options is available for hydraulic drives. Moving from a switching-based to a continuous form of actuation makes it possible to adjust the operating variables for a process
Natural frequency fo
external excitation (usually in the form of continuous oscillation), and assuming excitation is based on the natural frequency ( f = f o), the phase angle = —90o and the amplitude will be 1/2 the initial
Process-dependent workflow control
function has been completed. However, the technical effort of the device is greater than the time-based workflow controls, as a suitable sensor must be present for each start impulse. The process-dependent
Inductive position measurement
Inductive sensors are the favoured choice for short lengths in fluids-based drive technology. These are passive sensors based on the principle of self-induction. If an alternating current flows through [...] continuously adjustable valves . Where larger distances are involved, the open displacement transducers based on the oscillator damping process are more suitable. With this process, approaching an electrically
Safety of a system
fluids are released (these grow alongside the hydraulic capacity), risks based on unintentional machine movements and risks based on forces above the permitted level. In controls : The safety requirements [...] has to consider if he wants to avoid being held liable in the case of damage. The safe use of fluid-based systems is primarily the responsibility of the system designer. He must design the system so that
Function diagram
commissioning of a system as well as troubleshooting. The task formulation on which the diagram is based is the same as for the flow diagram and the function chart .
Slow speed high torque motor
(although this does not mean that controlled "high speed motors" cannot operate in this range too). Based on this definition, slow speed high torque motors are always piston motors ( valve-controlled or
Pipe capacity
Hydraulic capacity is a measure of the volume accommodated based on the pressure increase required. It is a function of the compressibility of the fluid. The compressibility of the oil in a pipe is increased
Rodless cylinder
using steel sealing bands (Figure K 21 c) . The cylinder with actuating band or cable (a and b) is based on closed cylinders, which gives it a somewhat thicker design. The magnetic cylinder (d) also has
Integrated position measuring systems
(potentiometers), inductive position sensors , systems involving changes in capacity, ultrasonic systems based on the magnetostrictive principle. Whereas the first three use measurement lengths of 500 or 1000