Adaptive Deadbeat Control of Non linear Systems

Adaptive Deadbeat Control of Non linear Systems

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A digital system with all of its poles at origin is termed as deadbeat. Such systems have a remarkable property, their pulse response settles within one sampling period. In this project adaptive deadbeat controller is designed for nonlinear boiler benchmark problem. One of the problem in implementing deadbeat controller alone is, it require perfect plant model. In practice it is difficult to obtain the exact plant model, because when a physical system structure and parameters are not available or dependent on time or operating conditions, a mathematical model representing the system behavior may not be obtained. The majority of processes met in industrial practice have stochastic character. Traditional controllers with fixed parameters are often unsuited to such processes because their parameters change. One possible alternative for improving the quality of control for such processes is the use of adaptive control systems. One of the advantage of implementing adaptive deadbeat controller is, it adjust the controller parameters at each and every sampling instance. Whenever a system parameter change,adaptive mechanism update the deadbeat controller parameter to keep the system stable

Математическое исследование линейных асинхронных двигателей

Математическое исследование линейных асинхронных двигателей

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Монография представляет собой фрагмент одного из направлений исследования кафедры электротехники и электротехнологических систем ГОУ ВПО УГТУ-УПИ (ныне УрФУ). В работе выполнено развитие моделей асинхронных машин на основе уравнений Максвелла и на основе детализированных схем замещения, а также исследованы с помощью этих методик асинхронные двигатели с разомкнутым магнитопроводом. Выполнена проверка адекватности созданных моделей.

Antioxidant Activity of Fish-By-Product Hydrolysate

Antioxidant Activity of Fish-By-Product Hydrolysate

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Fish-by-products; which consists of viscera, head, bones and gills; pose great disposal problem for the fish processing industry. The research was conducted to study the use of enzymatic and microwave hydrolysis to induce the antioxidant activity of fish- viscera hydrolysates. Two kinds of fish, i.e. tuna and sardine, were utilized in the research. Tuna-viscera microwave hydrolysate was proven to exhibit the highest antioxidant activity, followed by tuna-viscera enzymatic hydrolysate, sardine-viscera enzymatic hydrolysate and sardine-viscera microwave hydrolysate. These hydrolysates generally poses higher antioxidant activity compared to a 40 IU vitamin E.