منابع مشابه
Chemical Considerations on Passivity *
--It can be shown tha t the value o f the charge/ radius ratio o f metallic ions determines whether the metal on dissolut ion tends to become passive or not. Us ing this criterion it is possible to clarify the influence o f p H and electrode potential on the occurrence and breakdown of passivity. I N T R O D U C T I O N IN MANY cases a base metal is less reactive than would be expected from its...
متن کاملPassivity-based controller for chemical processes
This paper presents the development of a Passivity-Based Controller (PBCr) from a FirstOrder-Plus-Dead-Time model of the process. This approach results in a fixed structure controller that depends on the characteristic parameters of the model. This allows a unique controller of adjustable parameters that can be used in several processes. Computer simulations on a nonlinear chemical process judg...
متن کاملOn delay-dependent passivity
Sufficient conditions for passivity (positive realness) are obtained for continuous-time, linear, retarded, and neutral-type systems. A delay-dependent solution is given in terms of linear matrix inequalities (LMIs) by using a descriptor model transformation of the system and by applying Park’s inequality for bounding cross terms. A memoryless state-feedback solution is derived. Numerical examp...
متن کاملRobust Passivity Analysis and Design for Chemical Processes
In this paper, a new approach is developed for robust control of nonlinear chemical processes. The methodology proposed is based on passivity theory. Uncertainty and perturbations are taken into account in the stability analysis and controller synthesis such that the resulting closed-loop system can achieve better robustness and performance. The suggested passivity framework can deal with a lar...
متن کاملOn Differential Passivity
Motivated by developments on differential Lyapunov functions for contraction analysis in Forni, Sepulchre (2012) we propose a definition of differential passivity, based on the geometric framework of the prolongation of a nonlinear system in Crouch, van der Schaft (1987). We explore the ramifications of this definition and its potential uses.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Corrosion Science
سال: 1966
ISSN: 0010-938X
DOI: 10.1016/s0010-938x(66)80070-7