Hamming distance d
Correcting Codes, Bell Syst. Techn. J. 29 (1950)). If two code words of the same length are compared with each other position for position, the Hamming distance is equal to the number of bits (minimum) where [...] at just one binary position will cause them to look like another code word (Figure) . A code string with a Hamming distance of d = 2 offers greater transmission security, since single errors can be detected
Position error
connection with a finite force gain for the control element — applied to dead zones as a result of positive overlap/underlap conditions of valves, or they are caused by reversal errors associated with control
Monitoring systems for hydraulic fluid
To monitor the state of a hydraulic fluid there are three variations, each with a different information value: Visual inspection : The colour of a pressure fluid (in particular mineral oil) is a measure [...] produces good results over a long period. Exact oil examinations : These take place in laboratories with the oil supplier. As a rule, the process is only worthwhile when using larger oil quantities.
Programmable control
memory programmable control with random access memory (RAM) as program memory ( semiconductor memory ) the entire contents of which can be changed, even only slightly, without mechanical intervention in
On-off control
reached, the compressor switches to idling mode. This is done by providing relief at the pressure side with the suction valve closed (suction throttle control) or lifting the suction valve (relief control)
Disposable filter element
manner. Disposable elements include most volume (bulk) filters . Alternative: Washing out the element with ultrasound in the case of screen filters
Piston motor
The radial piston motor tends to predominate with its special pneumatic motor variety. The piston motor supports high loads across all rotation speed ranges and is particularly suitable for low rotation
Labyrinth seal
of the gap assuming a meandering or zigzag pattern ( Figure L 1 ). Labyrinth seals — mainly filled with grease — are used in hydraulics to protect roller bearings in heavily contaminated atmospheres.
Stretch-loading of seals
Stress, which occurs where the moved surface runs together with the sealing lip i.e. the frictional force on the bottom side of the seal acts opposite to the compressive force on the seal (Figure Z 6)
Torque measurement
precisely, however, the measured variable must be tapped via sliding contacts or wirelessly. Conversely, with hydraulic torque measurement the torque is converted directly into pressure that can be read on a