Pressure supply circuit with variable pumps
by variable pumps that are equipped with pressure controllers. The size necessary for the pumps is based on the sum of the individual requirements of the loads operated simultaneously (Figure D 69) .
Digitising (quantising)
converting an analogue variable x into digital variables. During this process the variable x is quantised based on a base unit where the continuous progression is assigned to an equivalent, step-shaped progression
Indexing accuracy with flow dividers
the smaller it is, the greater the deviation from the desired value. ( Figure T 6 ). Flow dividers based on displacement units (e.g. piston or gear motors) can be used to produce higher indexing accuracies
Laplace transformation
Laplace transformation is a method for solving linear differential equations with constant coefficients based on given initial conditions. It can also be used for fault functions which give the value zero in [...] argument. The operations and the differentiation and integration of time functions are converted, based on the form of transformation used, into algebraic operations with associated frequency functions
Labyrinth seal
Seal type for sealing rotating areas based on a gap seal whereby the gap length is increased by the contour of the gap assuming a meandering or zigzag pattern ( Figure L 1 ). Labyrinth seals — mainly filled
Primary and secondary control
Adjustability of a hydrostatic transmission based on a combination of a pump and motor with adjustable geometric displacement. This ensures the highest rotation speed range is achieved with a good level
Pour point
The pour point cannot be used to assess the characteristics at low temperatures of pressure fluids based on vegetable oil. This is because time is a factor here, as well as temperature.
Impulse metering lubricator
oil mist lubrication of compressed air whereby lubricating oil is allocated directly to the load based on the quantity and impulse sequence and independently of the air flow. This favours a really effective
Ramp generator
Electronic functional group to produce ramps. Its effect is based on the fact that an electrical condenser (C) is charged (and discharged) with a delay ( Figure R 10 ), resulting in a general voltage increase
Efficiency of pipe
expressed as follows: This means the higher the efficiency of pipe, the higher the operating pressure based on the flow resistance remaining the same.