Proceedings. IEEE International Symposium on Computer Aided Control System Design
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MathML in Polynomial Toolbox for Matlab
- Trang 284-286
This paper reports on a useful application of MathML to web presentation and
export/import of polynomial matrices from/to the Polynomial Toolbox for
Matlab/spl trade/. Two Matlab functions are described that can be used both for
high quality visualization of polynomial matrices on web and for data exchange
between Polynomial Toolbox and other software packages that compute with
polynomial matrices...
#Polynomials #MATLAB #Computer languages #Packaging #Algebra #XML #Displays #Cybernetics #Application software #Data visualization
Robust /spl mu/-design of a disk drive servo system
- Trang 57-62
In this paper we show the application of the SLICOT routines, for robust control
system analysis and design, in a disk drive servo control system design. An
uncertainty model of the system plant is first derived which contains eleven
uncertain parameters including four resonance frequencies, four damping
coefficients and three rigid body model parameters. The /spl mu/-synthesis and
analysis method...
#Robustness #Disk drives #Servomechanisms #Robust stability #Robust control #System analysis and design #Control systems #Nonlinear control systems #Servosystems #Uncertainty
On the computation of the maximal structured singular value for aeronautical applications
- Trang 254-259
This paper considers the necessary transformations and the computational issues
associated with the determination of the maximal structured singular value, /spl
mu//sub max/ without the use of a frequency gridding strategy. It is shown that,
for the case of purely real model perturbations, convergence difficulties exist
in determining bounds on /spl mu//sub max/ using existing Matlab software. A n...
#Frequency #Robustness #Aircraft #Uncertainty #Testing #Algorithm design and analysis #Application software #Grid computing #Mathematical model #Certification
Extended variable parameterization method for optimal control
- Trang 175-180
An extension of the variable parameterization method is presented. Conditions
for switching generation and reduction are analysed. The previously used
quasi-Newton algorithm is completed with the Newton method. The transversality
conditions are modified. The ideas are illustrated by a numerical example
showing the performance of the algorithm also for singular cases. A comparison
with direct and i...
#Optimal control #Newton method #Control systems #Computational complexity #Convergence #Bang-bang control #Optimization methods
Controllability analysis of multi objective control systems
- Trang 74-79
The performance requirements stated in project specifications often comprise
conflicting objectives. These objectives may further be a complex mix of steady
state and dynamic performance. Control devices such as solenoid actuators are
often chosen purely on steady state force characteristics, due to the difficulty
of appraising the conflicting and generally non-linear nature of the performance
obj...
#Controllability #Control system analysis #Control systems #Actuators #Vehicle dynamics #Steady-state #Force control #Solenoids #Appraisal #Automotive applications
An integrated control system for optimizing the energy consumption and user comfort in buildings
- Trang 127-132
In this paper, an HVAC system consisting of a thermal and ventilation subsystem
and a lighting subsystem is analyzed in detail. The objective of this work is
the development of an integrated control system to optimize energy consumption
and user comfort. The entire control system is described in detail. The cross
coupling, which links the thermal system with the lighting system, is specified.
This...
#Centralized control #Energy consumption #Control systems #Temperature control #Lighting control #Thermal variables control #Ventilation #Testing #Optimal control #Intelligent control
An optimisation algorithm for designing fixed-structure controllers using the QFT method
- Trang 157-162
We propose a simple optimisation algorithm for designing fixed-structure
controllers for highly-uncertain plants. The method can be used to automate the
loop-shaping step of the quantitative feedback theory (QFT) design procedure and
guarantees robust stability and performance to the feedback loop for all
parameters in the plant's uncertainty set. To avoid over-designing the system,
the algorithm ...
#Design optimization #Algorithm design and analysis #Uncertainty #Frequency #Feedback #Robustness #Robust control #Robust stability #Design methodology #Automatic control
Multiobjective design of a fuzzy controller for a nonlinear missile autopilot
- Trang 15-20
Gain scheduled control is one very useful control technique for linear
parameter-varying (LPV) and nonlinear systems. A disadvantage of gain-scheduled
control is that it is not easy to design a controller that guarantees the global
stability of the closed-loop system over the entire operating range from the
theoretical point of view. Another disadvantage is that the interpolation
increases in comp...
#Fuzzy control #Missiles #Control systems #Nonlinear control systems #Nonlinear systems #Stability #Interpolation #Fuzzy logic #Fuzzy systems #Character generation
Modeling of waterproof plugs in the cavern gas storage
- Trang 218-223
The main goal of the described project was to develop useful models of behaviour
of waterproof plugs in the cavern gas storage. The models are intended for
facility operators that compare the real behaviour of plugs with the models. The
models are used as diagnostic models. The models provide the accelerated
estimation of the future behaviour thus the next operator steps are based on
this comparis...
#Plugs #Water storage #Shafts #Temperature sensors #Delay estimation #Cybernetics #Acceleration #Tunneling #Steel #Sensor systems
On computing the l/sub 1/ norm of a polynomial matrix fraction
- Trang 278-283
This paper proposes a new algorithm for computing the l/sub 1/ norm of a linear
MIMO system described by a polynomial matrix fraction. The algorithm follows the
one proposed by Balakrishnan and Boyd (1992) with the only difference that there
is no need to obtain a state space realization first. Instead, the coefficients
of the polynomial matrices are used directly. The algorithm is based on two
co...
#Polynomials #Tail #Vectors #State-space methods #Time invariant systems #MIMO #Upper bound