October 2018
Intermediate to advanced
423 pages
8h 42m
English
Content preview from Tracking Control of Linear Systems
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Chapter 1 Introduction
1.1 Time, physical variables and systems
Time is not only the basic constituent of the existence, but it is also the crucial physical variable for every process, every motion, for the work of every dynamic system, hence for every control system. The behavior of every plant, of its controller and of its control system occurs in time. The physical reality, the human experience with it, the human understanding, the accumulated human knowledge lead to the following definition of time [170], [171]:
Definition 2 [148] Time
Time (i.e., the temporal variable) t (or τ):
- – is an independent scalar physical variable,
- – its value called instant or moment determines uniquely when somebody or something started/ceased to exist,
- – ...
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