Begell House Inc.
Journal of Automation and Information Sciences
JAI(S)
1064-2315
48
12
2016
Optimal Stabilization of the Earth Artificial Satellite with Redundant System of Fly-Wheels
1-12
Sergey M.
Onishchenko
Institute of Mathematics of National Academy of Sciences of Ukraine, Kiev
Consideration is given to the problem of the Earth remote probe compact spacecraft of the family "Sich" optimal stabilization with redundant system of fly-wheels. It is shown that the resulting optimal control of satellite has on the average 30% improvement in quality of its stabilization.
Robust Control of Angular Motion of Platform with Payload Based on H∞-Synthesis
13-26
Olga A.
Sushchenko
National Aviation University, Kiev
Basic principles of structural synthesis of robust control systems of angular motion of platforms with payload based on H∞-synthesis are studied. Account was taken of necessity of optimal control of stabilization and guidance processes that is provided by application of pre-filter and feedback controller. The new performance functional for such configuration systems which unlike the known ones takes into account the sensitivity functions by the coordinate disturbance and measurement noise is proposed.
Synthesis of Multidimensional Optimal Digital Control System of the Gas-Air Tract of Power Boiler
27-36
Vadim F.
Lozhechnikov
Odessa National Polytechnic University, Odessa
Elena O.
Ulitskaya
Institute of Energy and Computer Control Systems of Odessa National Polytechnic University, Odessa
Consideration is given to the multimode mathematical model of dynamics of gas-air tract of average power drum-type boiler. By the mathematical model there was synthesized the modern multidimensional optimal control system of a technological section and its operation was studied in comparison with standard ACS. There are also presented the performance indices of transition processes in designed optimal control systems. There is presented a design of physical similarity model of gas-air tract of a power boiler.
On Optimal Control Problem of Elliptical Equation Coefficients with Integral Qualitative Criterion Along the Domain Boundary
37-47
Rafig Kalandar ogly
Tagiyev
Baku State University, Baku (Azerbaijan)
Rena Sattar kyzy
Kasymova
Baku State University, Baku (Azerbaijan)
The problem of optimal control of the coefficients of an linear elliptic equation is considered. The questions of the correctness of the problem statement is studied, the differentiability by Frechet of the objective functional is proved, the expression for its gradient is found and the necessary condition of optimality is established
Optimization of the Parameters and Motion Control Modes of the Bilegged Walking Robot
48-61
Miroslav V.
Demydyuk
Ya.S. Podstrigach Institute of Applied Problems of Mechanics and Mathematics of National Academy of Sciences of Ukraine, Lvov, Ukraine
Bogdan A.
Lytvyn
Ya.S. Podstrigach Institute of Applied Problems of Mechanics and Mathematics of National Academy of Sciences of Ukraine, Lvov, Ukraine
The problem of joint optimization of design parameters (the length and masses of links) and motion laws of the bipedal anthropomorphic robot has been investigated. The robot walks over a fixed horizontal plane under controlled forces actions in the leg joints. The robot walking has been modeled at a double step interval (in the class of symmetrical walking), taking into account the main rhythmic, kinematical and dynamical constraints of the anthropomorphic movement. Bilateral nonstationary constraints are imposed on the feet support reactions. The robot's links are optimized on conditions that the length and mass of every leg is constant, the quadratic functional is used as an optimality criteria. The algorithm for approximate solving the studied optimal control problem (with parameters), based on the parameterization of the robot's generalized coordinates by cubic smoothing splines and the use of numerical nonlinear mathematical programming procedures, is built.
Problems Features of the Robust Control of Process Plants. Part II. Examples of Modeling of Robust Control Systems
62-69
Natalya N.
Lutskaya
National University of Food Technologies, Kiev, Ukraine
Anatoliy P.
Ladanyuk
National University of Food Technologies, Kiev
Questions of development and modeling of control system with robust controllers, synthesized by different algorithms, are considered. On the basis of mathematical model of controlled object for multibody evaporator, which was presented in Part I of the article, four robust controllers were synthesized according to 2-Ricatti approach by algorithms of μ;-sythnesis and non-smooth optimization. Comparative results of modeling are adduced as well as advantages and lacks of every of the developed schemes.
Contents 1-12
71-82