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OBJECTIVES To monitor antiviral drug resistance among seasonal influenza viruses isolated in Korea during the 2008-2009 influenza season, we examined influenza isolates collected through Korea Influenza Surveillance Scheme for antiviral drug susceptibility. METHODS For genetic analysis of antiviral drug resistance, the matrix (M2) and neuraminidase (NA)(More)
AFS and DYC are the active safety devices of vehicles by improving vehicle handling and stability. In this paper, the integrated control systems of active front steering (AFS) and direct yaw moment control (DYC) using dynamic inversion (DI) control law is proposed. DI is a novel control technique which has been applied in vehicles operated in various(More)
Incipient bearing fault detection and diagnosis in an induction motor are important for prevention of drive failures. Bearing fault leads to torque oscillations which results in phase modulation of stator current. Hence, the bearing fault can be detected by checking through the fault-related frequency at stator current spectrum. In this paper, the general(More)
This paper addresses a dynamic fault tree analysis (DFTA) to predict the reliability of a steering system. Reliability evaluation is a vital task to prevent any potential failure in a system by identifying vulnerable parts of the system and managing them effectively. Safety-critical systems, such as electric vehicles, have many components whose failure may(More)
This paper presents a fault-tolerant control technique based on control allocation with a modified daisy chaining method that utilizes the benefit of smart actuators. For tolerating actuator faults, control allocation has been widely adopted together with a daisy chaining method to generate virtual control inputs for the actuators that are partitioned into(More)
Failure of an actuator in the multi-actuated control surfaces causes catastrophic structural failure due to oblique deflection. In this paper, a networked fault tolerant control strategy to accommodate actuator failure with an application to a modern aircraft is presented. The proposed control strategy is based on intelligent subsystems, such as smart(More)
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