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Control deviation

Limit for the magnitude of an error that must be exceeded for the error to be indicated or so that in redundant systems the system switches over to the redundant channel (with standby redundancy). On

These include imperfections in the object measured, the measuring instrument and the measuring procedure . In addition, there can be external effects such as temperature, humidity, position, accelerat

Graphic representation of the error as a function of the output (indication). The error behaviour can also be defined in a table (Figure F 5) (VDI 2600).

Determination of the composition of noise in relation to individual frequencies. Normally the measurement is made in steps of one octave (frequency doubling, octave band).

For the control movements of a valve pressure fluid is drawn from another (mostly control) circuit (external pilot control). The external pilot control has, compared to the internal pilot control, the

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

Possibility of movement of a rigid body in a reference system. Six degrees of freedom are given, e.g., by three translatory and three rotary movement features.

Predominantly process-dependent signal. Here attention is to be paid to the duality of release and locking: The reversal of locking can correspond to a release (DIN 19 237).

Ability of an elastic material to recover its manufactured shape also after elastic deformation. This form elasticity is only retained on thermoelastically processed thermoplastics as long as the defo