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CONTROL SYSTEM
Chapter -1
Introduction
Role of control systems in engineering design
Classification of control system types
Open loop
Command /disturbance-compensated open-loop
Closed-loop
Servomechanisms/process control
Self –operated controllers
Industrial robots
Cascade control
Digital computer control, numerical control
Sampled-data systems
Hierarchical control strategy
Multivariable control
Logic controls, programmable logic controller
Nonlinear, optimal, adaptive control
Man-machine control systems
Biological control systems
Biological control systems
Econometric feedback models
Classical/modern control theory
Basic benefits of feedback control
The accuracy-stability tradeoff in feedback systems
Control system design procedures
Bibliography
Problems
Chapter-2 Component modeling
Generalized block diagram of a feedback system
Laplace transform methods, linearization
System frequency response, frequency spectrum methods
Zero-order dynamic system models
First-order dynamic system models
Second –order dynamic system models
Digital simulation of linear and nonlinear systems
Dead-time effects
Distributed-parameter models
Loading effects for component interconnections
Bibliography
Problems
Chpater-3
Component sizing for the basic system
Estimation of critical values of system command and disturbance
Inputs
Geared systems, optimum gear ratios and motor selection
Valve-controlled hydraulic actuators; maximum power transfer
Process-control-valve sizing; technical and economic
Considerations
Bibliography
Problems
Chapter-4
Logic controls
Definition of logic control
Overview ogf logic-control forms and applications
The basic logic elements
Elements of Boolean algebra
A simple example of logic control
Converting a simple relay system to solid-state electronics using a
Binary logic module
Programmable logic controllers
Bibliography
Chapter-5
System performance specifications
Relations-between practical economic and detailed technical
Performance criteria
Basic considerations
Time-domain performance specifications
Frequency-domain performance specifications
Problems
Chapter-6
Absolute stability criteria
Overview
Linear systems with constant coefficients
The routh stability criterion
The nyquist stability criterion
Root-locus interpretation of stability
Problems
Chapter-7
Open-loop, input-compensated control
Disturbance-compensated control
Command-compensated control
Examples of command and disturbance feed forward
Problems
Chapter -8
On –off control and nonlinear system analysis
Forms and characteristics of on-off control
Digital simulation studies
Unintentional nonlinearities
On –off control of an aircraft roll-stabilization system
Residential heating system using on-off control with secondary
Feedback
Bibliography
Problems
Chapter-9
Proportional control and basic
Feedback system-design procedures
General characteristics of proportional control
Proportional control of a liquid-level process
Effect of gain distribution on steady-state errors
Proportional control of a first-order system with dead time
Proportional temperature control of a thermal system with dead
Time
Disturbance feed forward added
Gain setting using frequency-response design criteria
Unity feedback
Non-unity feedback
Gain setting using root-locus design criteria
Dominant roots and imperfect pole/zero cancellation
Some useful nonlinear ‘variations of proportional controls
Problems
Chapter-10
Integral control
Basic characteristics of integral control
Hardware and software implementation of integral control modes
Analog controllers
Digital algorithms
Integral control of dead-time-plus-first order-lag processes
Integral control of a liquid-level process
Double integral control in a synchro/digital converter
Integral windup and its correction
An adaptive feed forward combustion trim controller using
Integral control
Problems
Chapter-11
Derivative control modes
Basic characteristics
Effects of first-and second-derivative-of-error control in an
Electromechanical position servo
Cancellation compensation
Effects of first-and second-derivative-of-controlled-variable
Control in an electromechanical position servo
Vehicle stability augmentation
Feedback of intermediate variables; state-variable feedback
Implementation of derivative control modes
Analog controllers
Digital algorithms
Pseudo derivative feedback
Problems
Chapter-12
Combined and approximate control modes
Proportional-plus-integral control; phase-lag compensation
Use of phase-lag compensation in diesel engine governing
Proportional-plus-derivative control; phase-lead compensation
Saturation-effects, simulation studies
Digital algorithms
Proportional-plus-integral-plus-derivative control; lag lead
Compensation
Electro hydraulic speed control with disturbance feed forward
Compensation for basic systems with dominant resonances
Stabilization of a guidance platform
Controller tuning, manual and automation
Problems
Chapter-13
Case studies and special topics
An airborne heliostat, an electromechanical type-3 servo system
With triple phase-lead compensation
An antiaircraft gun director, a hydro mechanical type-2 servo
With mechanical compensation
The haystack hill radio telescope pointing system; conditional
Stability/saturation problems solved with a dual-mode servo
Specialized controllers for systems with large dead times
Sampling controllers and smith predictors
Ultra precision speed control; phase-lock-loop servos
Nonlinear controllers to stabilize variable-inertia robot arms
Problems
Chapter-14
Digital and computer control
Introduction
Open-loop digital control
Digital fluid actuators
Digital valves
Stepping motor systems
Sampling, A/D and D/A conversion, quantization, and noise
Filtering in computer control
Difference equations and Z transforms
Digital PID control
Sampled-data stability criterion
Digital simulation of sampled-data systems
Conclusion
Problems
CHAPTER-15
Multivariable control systems
Introduction
Specifying the amount of interaction in MIMO processes
Design of noninteracting controllers
Bibliography
Problems