Page 21 - Modern Control Systems

Preface xvii

In this column remarks
relate the design topics on
the left to specific sections,
figures, equations, and tables
Topics emphasized in this example
in the example.
Establish the control goals
Shading indicates the
topics that are emphasized
(1) Establishment of goals,
in each chapter. Some chapters
Identify the variables to be controlled variables to be controlled,
will have many shaded blocks, and specifications.
and other chapters will emphasize
just one or two topics.
Write the specifications

(2) System definition
1 and modeling.
Obtain a model of the process, the
actuator, and the sensor
~r
Describe a controller and select key
parameters to be adjusted
(3) Control system design,
\ ' simulation, and analysis.
Optimize the parameters and
analyze the performance
1
If the performance does not meet the If the performance meets the specifications,
specifications, then iterate the configuration. then finalize the design.

• diesel electric locomotive control (Section 11.9, page 876)
• digital audio tape controller (Section 12.8, page 943)
Q manufacturing worktable control (Section 13.10, page 1009)
Each chapter includes a section to assist students in utilizing computer-aided
design and analysis concepts and in reworking many of the design examples. In
Chapter 5, the Sequential Design Example: Disk Drive Read System is analyzed
using computer-based methods. An m-file script that can be used to analyze the design
is presented in Figure 5.47, p. 362. In general, each script is annotated with comment
boxes that highlight important aspects of the script. The accompanying output of the
script (generally a graph) also contains comment boxes pointing out significant ele-
ments. The scripts can also be utilized with modifications as the foundation for solv-
ing other related problems.