The development of control techniques to mitigate the effects of unknown hysteresis preceding with plants has recently re-attracted significant attention. In this paper, we first give a brief review of presently developed hysteresis models and hysteresis compensating control methods. Then, with the use of the Prandtl-Ishlinskii hysteresis model, we propose a robust adaptive control scheme. The ...

The chemical reactions are very complex, and include oscillation, condensation, catalyst and self-organization, etc. In these case changes of entropy may increase or decrease. The second law of thermodynamics is based on an isolated system and statistical independence. If fluctuations magnified due to internal interactions exist in the system, entropy will decrease possibly. In chemical reactio...

This paper addresses certain inherent limitations of local priority hysteresis switching logic. Our main result establishes that under persistent excitation assumption, it is possible to relax constraints requiring strict positivity of local priority and hysteresis switching constants. Relaxing these constraints allows the adaptive system to reach optimality which implies the performance improv...

This paper addresses open-loop control strategies that involve a low frequency modulation of the fuel injection for suppression of pressure oscillations in combustion systems. Such a strategy has been employed in a number of recent investigations including [1]-[5]. Using a physically based model, analytical explanations for the effectiveness of such a low pulsing strategy are provided in this p...

This paper addresses capital accumulation and capital productivity change in an economy with endogenous technological change and floors and ceilings in activity. The properties of the resulting two-variable noniinear differential equation system are studied in some detail. The welfare implications are also considered. When discrete lags are introduced, wide-ranging behaviour emerges, which incl...

Glassy carbon (GC) has been high-pressure high-temperature treated. An interesting morphology evolution from the pristine sample to the high pressure products was observed. It is found that GC can be graphitized under pressure at a temperature much lower than that at ambient condition. Furthermore the in−situ structure and electrical measurements of GC and graphitized glassy carbon (GGC) under ...

Abstract We report the fabrication process and performance characterization of a fully integrated ferroelectric gate stack in WSe 2 /SnSe Tunnel FETs (TFETs). The energy behavior during charging discharging, together with loss switching cycle efficiency factor are experimentally extracted over broad range temperatures, from cryogenic temperature (77 K) up to 100 °C. obtained results confirm tha...

Rheological characterization of complex fluids subjected to cyclic shear-rate sweep often exhibits hysteresis. Since both viscoelastic and thixotropic materials show hysteresis loops, it is important understand distinguishing features (if any) in the same shown by either. Lately, there has been substantial work that attempts relate area enclosed loop with manner which shear rate varied cycle, o...