Page 53 - Understanding Automotive Electronics

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2 THE SYSTEMS APPROACH TO CONTROL AND INSTRUMENTATION

Figure 2.7
Illustration of Steady-State Input and Output of a System

frequency response is said to be “flat” over this bandwidth. For example, in Figure
2
2.8 the frequency response is nearly constant from 10 (100) Hz to about 10
4
(10,000) Hz. In automotive electronic systems, this range of frequencies is
determined by the system designer to be compatible with the corresponding
range of input frequencies in normal systems operation. There are numerous
references to the bandwidth of automotive electronic systems in later chapters.
The performance of any system can be evaluated from the response of the
output to a sinusoidal input. Important properties of the system can be
determined from this response, such as resonance, bandwidth, and response to
rapid input changes.

40 UNDERSTANDING AUTOMOTIVE ELECTRONICS