Acceleration feedback
Is used to stabilise closed circuit position control systems and together with velocity feedback has an optimal action in these circuits. On poorly damped drives (such as hydraulic drives) acceleratio
Recirculation
Some of the oil film stuck to the piston shaft at the outlet of a cylinder is scraped off when the piston is inserted (results in leakage even in the case of an intact seal), while the other part is f
Sealing system
Interaction of various seals at a sealing point (e.g. on a piston rod) to address the increased sensitivity to leakage with operating conditions that are becoming harder at the same time: a situation
Piezoresistive pressure sensor
Pressure transducer based on the piezoresistive effect whereby pressure causes an elastic semiconductor structure to change, which in turn changes the values for resistances connected as a Wheatstone
Electro-hydraulic control technology
Collective term for all hydraulic feedback controls with electrical (electronic) signal processing. As the to the hydraulics - the servo valves and proportional valves - has already been in use for so
Resolution
Increase in the input signal that is necessary to cause a change in the power output by the (continuously adjustable) valve at a specific signal level, expressed in % of the input signal. The resoluti
Wear protection capacity
Reflects the ability of a hydraulic fluid to reduce mechanical wear on moving parts of a hydraulic system which it comes into contact with. To improve the wear protection capacity, wear protection age
Power section
As far as the control of hydraulic systems is concerned, a distinction must be made — since the term " control " is rather a general one — between control in the signal range and control in the power
Subordinate control circuit
that feeds back a further control variable (e.g. acceleration or pressure) alongside the primary control circuit. The subordinate control circuit is introduced if the feedback of the actual value does
Suction valve
Valve, which in the case of valve-controlled (piston) pumps, opens due to the vacuum cased by the reverse pistons and allows hydraulic fluid to flow through afterwards. In the lower reversal point of