January 2002
Beginner to intermediate
192 pages
5h 49m
English
Content preview from Control Systems
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5
Frequency response
5.1 Introduction
In earlier chapters we have considered the outputs that arise from systems when subject to step, impulse and ramp inputs. In this chapter we consider the steady state output responses of systems when the inputs are sinusoidal signals. This leads to powerful methods of analysing systems in considering how the amplitude and phase of the output signal varies as the frequency of the input sinusoidal signal is changed. This variation is termed the frequency response of the system and can be described by, what are termed, Bode diagrams.
The derivation of a transfer function for system involves making assumptions about the physical model, e.g. springs, masses and damping, that can be used to represent the system. ...
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