Abstract
A more realistic method of analysing the limit cycle characteristics of a bang-bang servo in its proper context is presented in this paper, It is ahown that the mathematical model which characterizes the switching behaviour of a bang-bang servo under the combined influence of system non-linearities may be formulated from a system viewpoint to provide a more accurate reflection of the real situation. This is then followed by the derivation of the actual deceleration trajectory from which its departure from the ideal switching curve is established. The effect of such a departure on the limit-cycle characteristics will be quantitatively determined to give a proper understanding of the switching problem associated with the bang-bang servo.
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