this paper focuses on the non-fragile guaranteed cost control problem for a class of t-s fuzzy time-varying delay systems with local bilinear models. the objective is to design a non-fragile guaranteed cost state feedback controller via the parallel distributed compensation (pdc) approach such that the closed-loop system is delay-dependent asymptotically stable and the closed-loop performance i...

a two-dimensional (2d) single particle model for the copolymerization of propylene-ethylene with heterogeneous ziegler-natta catalyst is developed. the model accounts for the effects of the initial shape of the catalyst and carck/ pore patterns on the copolymer composition, polymerization rate and the average molecular weight properties. the spherical and oblate ellipsoidal shapes of catalyst p...


 Understanding the heat transfer phenomenon during interior ballistics and consequently presenting a realistic model is very important to predict temperature distribution inside cannon barrel, which influences gun wear cook-off. The objective of this work present new detailed numerical for prediction thermal behaviour barrel by combining PRODAS simulation with COMSOL simulation. In study,...

based on dynamic modeling, robust trajectory tracking control of attitude and position of a spherical mobile robot is proposed. in this paper, the spherical robot is composed of a spherical shell and three independent rotors which act as the inner driver mechanism. owing to rolling without slipping assumption, the robot is subjected to two nonholonomic constraints. the state space representatio...

Absorber feed tank (AFT tower) is a kind of reinforced concrete structure supported steel tank. It composite used for desulfurization and cleaning in power industry. A large amount slurry sumped the tank, oxidation air blown into through pipe to impact surface, then agitator vibrates disturbs The has obvious vibration daily operation, which not conducive safety structure, but also brings greate...

The ball lock separation mechanism is used in space vehicles. Various parts of space vehicles have to be separated during flight, to jettison burnt out rocket stages and components that are no longer needed, to uncover equipment, or to deploy payloads. In this paper the detailed analysis of a „Ball Lock release mechanism‟ designed to meet customer specific conditions is presented. Multi-body si...

a few of the presented soil behavior models are capable of predicting the triggering and post liquefaction and also shear band mechanism through the soil media. the assessment of earth-dam body behavior as a soil structure made of cohesive soil in core and non-cohesive soil as the core supports, including water interaction at upstream through earthquake upon a multi-line constitutive equations ...

in this paper, load and buckling mode of a smart column are presented. the theoretical model is a three-layer piezoelectric composite beam that behaves as an axial actuating mechanism. this actuator consists of an elastic core sandwiched between two piezoelectric active outer layers. the piezoelectric layers are polarized transversely, i.e., the polarization vector is parallel to the applied el...