In this paper, the issue of roll channel for attitude control small air-to-surface missiles suffering from multiple disturbances is investigated. The dynamic model established and controller based on active disturbance rejection (ADRC) designed. Based extended state observer, observed compensated to track rate accurately. Then, simulations verification are carried out rudder efficiency, barycen...

This technical report contains the text of Nahmsuk Oh’s thesis “Software Implemented Hardware Fault Tolerance.” FUNDING This work was supported in part by the Ballistic Missile Defense Organization, Innovative Science and Technology (BMDO/IST) Directorate and administered through the Department of the Navy, Office of Naval Research under Grant Nos. N00014-92-J-1782 and N00014-95-1-1047 Copyrigh...

Nonlinear transport properties of a ballistic rectifier fabricated from InAs/AlGaSb heterostructures are reported. The operation of the ballistic rectifier is based on the guidance of carriers by a square anti-dot structure. The structure was defined by electron beam lithography and wet chemical etching. The DC characteristics and magneto-transport properties of the ballistic rectifier have bee...

We present an analytical model for nanoscale MOSFETs capable to describe the transition from drift-diffusion to ballistic transport. We start from a closed-form model of ballistic Fully Depleted SOI (FDSOI) and Double Gate (DG) MOSFETs with non degenerate statistics, and, on the basis of the Büttiker interpretation of dissipative transport in terms of virtual voltage probes, we show that a long...

In this paper, we examine the crossover between 4 ballistic and diffusive transport in III–V nanowire transistors. 5 We find that at lower drain voltages the ballistic-to-diffusive 6 crossover occurs at channel lengths of approximately 2.3 nm at 7 room temperature. However, when we increase the drain voltage, 8 we find that the ballistic-to-diffusive crossover can be more than 9 nine times as l...

The diffusive-ballistic heat conduction of finite-length single-walled carbon nanotubes has been studied by means of nonequilibrium molecular dynamics simulations. The length dependence of thermal conductivity [1] is quantified for a range of nanotube lengths up to 1.6 μm at room temperature. A gradual transition from nearly pure ballistic to diffusive-ballistic heat conduction was identified f...

P O L Y M E R S Our goal is to prevent the catastrophic failure of ballistic body armor by developing measurements and predictive models to test and determine the long-term reliability of polymers used in ballistic resistant armor. Our approach, which utilizes conventional analytical techniques in addition to newly developed minimally invasive test methods, seeks to identify the chemical and me...