this paper undertakes the synthesis of a logic-based switching h2/h∞ state-feedback controller for continuous-time lti singular perturbation systems. our solution achieves a minimum bound on the h2 performance level, while also satisfying the h∞ performance requirements. the proposed hybrid control scheme is based on a fuzzy supervisor managing the combination of two controllers. a convex lmi-b...

We introduce a notion of a non-Abelian loop gauge field defined on points in loop space. For this purpose we first find an infinite-dimensional tensor product representation of the Lie algebra which is particularly suited for fields on loop space. We define the non-Abelian Wilson surface as a ‘time’ ordered exponential in terms of this loop gauge field and show that it is reparametrization inva...

Using an earnings management model in which managers can manipulate the earnings announcement when the firm’s internal control system fails, this paper proposes a measure of earnings quality, based on Ganuza and Penalva’s (2010) notion of integral precision that can be estimated using either the time series of earnings or the relation between earnings and prices. I show that large scale frauds ...

The bullwhip effect phenomena in supply chain management were discussed a lot in the literatures. Most of them provided empirical evidences or analytical formulas to demonstrate the existence of the bullwhip effect in a simple two or more echelons supply chain. This paper will explore the phenomena in a quite different situation: a supply chain with deteriorating products. Unlike the convention...

This paper is concerned with systems with control whose state evolution is described by linear skew-product semiflows. The connection between uniform exponential stability of a linear skewproduct semiflow and the stabilizability of the associated system is presented. The relationship between the concepts of exact controllability and complete stabilizability of general control systems is studied...

Dynamic analysis and monitoring is of great importance in industrial process plant. Very often, a qualitative analysis of process data is enough to analyze the situation of the plant. This paper introduces a methodology to analyze qualitative trend of time series data at first. Based on the methodology, a method to diagnose a control valve in a process control loop is introduced. The proposed d...