In this paper we present an application of fault identification and control reconfiguration in the context of a high performance aircraft. A second order divided difference filter is used to identify an internal leakage fault in an electrohydraulic actuator found in the aircraft elevator. The identified fault information is then utilized in the formulation of an aircraft systems model for progn...

Approved: ____________________________________ Thesis Supervisor ____________________________________ Title and Department ____________________________________ Date 3 FAULT DIAGNOSIS OF VLSI DESIGNS: CELL INTERNAL FAULTS AND VOLUME DIAGNOSIS THROUGHPUT

This paper deals with a fault detection for a magnetic suspension system by using Generalized Internal Model Control (GIMC) structure. To design robust fault detection filters, two fault detection design problems are formulated as multiple objective optimization problems by minimizing the effects of disturbances and maximizing the fault sensitivity involving an LTI system with disturbance and f...

A new fault model is developed for estimation of the coverage of physical defects in digital circuits for given test sets. Based on this model, a new hierarchical defect oriented fault simulation method is proposed. At the higher level simulation we use the functional fault model, at the lower level we use the defect/fault relationships in the form of defect coverage table and the conditional d...

This work extends a general method used to test classical circuits to quantum circuits. Gate internal errors are address using a discrete fault model. Fault models to represent unwanted nearest neighbor entanglement as well as unwanted qubit rotation are presented. When witnessed, the faults we model are probabilistic, but there is a set of tests with the highest probability of detecting a disc...

In this paper we propose an innovative way of dealing with the design of fault tolerant control systems. We show how the nonlinear output regulation theory can be successfully adopted in order to design a regulator able to offset the effect of all the possible faults which can occur and, so doing, also to detect and isolate the occurred fault. The regulator is designed by embedding the (possibl...

A methodology is proposed to diagnose faults from a detection system that allows to express uncertainty with intervals in parameters and measurements. A fault is detected by comparing current measurements with computed external and internal approximations of behavior. The results are applied to diagnose faults. A qualitative data set is obtained in order to create fault rules. A fault library i...

In this paper, we investigate the security of the KATAN family of block ciphers against differential fault attacks. KATAN consists of three variants with 32, 48 and 64-bit block sizes, called KATAN32, KATAN48 and KATAN64, respectively. All three variants have the same key length of 80 bits. We assume a single-bit fault injection model where the adversary is supposed to be able to corrupt a sing...

With the rapid development of the photovoltaic industry, fault monitoring is becoming an important issue in maintaining the safe and stable operation of a solar power station. In order to diagnose the fault types of photovoltaic array, a fault diagnosis method that is based on the Least Squares Support Vector Machine (LSSVM) in the Bayesian framework is put forward. First, based on the elaborat...