مشروع البحث: Robust Observers for Nonlinear Large Scale Interconnected Systems
تحميل...
المساهمين
الممولين
رقم التعريف
185
الباحث
Mokhtar S. Khalifa Mohamed
الوصف
• Arobust observer is designed for nonlinear interconnected systems with uncertain
ties where both the nominal isolated subsystems and interconnections are nonlinear.
Anovelvariable structure dynamic system is designed to estimate the state variables
of the interconnected systems asymptotically.
• Sliding mode techniques have been utilised to design observers for a class of inter
connected systems with both structured and unstructured uncertainties. For struc
tured uncertainties, a robust sliding mode observer is designed using the distribution
matrix of the uncertainties to guarantee that the error dynamics are asymptotically
stable. For unstructured uncertainties, an ultimately bounded approximate observer
is proposed to estimate the system states.
• In the case that the interconnected systems have unknown time varying parame
ters, adaptive observers are developed to estimate both the system states and the
unknown time varying parameters simultaneously. A variable structure control
technique is utilized to guarantee that the corresponding error dynamical system
is convergent asymptotically while the parameter estimation error is uniformly ulti
mately bounded. Moreover, adaptive sliding mode observer is proposed to estimate
the inaccessible states in presence of unknown time varying parameters.
الكلمات الدالة
sion system are employed to explain the designed observation scheme and to demonstrate that the designed adaptive observers can be applied to practical systems effectively.