Browsing by Author "Whidborne, James F."

Browsing by Author "Whidborne, James F."

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  • Performance Analysis of eXogenous Kalman Filter for INS/GNSS Navigation Solutions 
    Alam, Mushfiqul; Whidborne, James F.; Millidere, Murat (Elsevier, 2024-11-22)
    There are several methods of fusing data for navigation solutions using Inertial Navigation System (INS) aided by Global Navigation Satellite System (GNSS). The most used solutions are nonlinear observer (NLO) and extended ...
  • Performance in sampled data systems 
    Whidborne, James F. (IEEE, 1992-05-01)
    A performance index for control systems has been defined as the supremum of the absolute error that occurs over all time and all inputs. The input to the system is known only to the extent that it belongs to a known function ...
  • Propulsion and flight controls integration for the blended wing body aircraft 
    Ur Rahman, Naveed (Cranfield University, 2009-05)
    The Blended Wing Body (BWB) aircraft offers a number of aerodynamic perfor- mance advantages when compared with conventional configurations. However, while operating at low airspeeds with nominal static margins, the ...
  • The prospects of hydrogen in achieving net zero emissions by 2050: a critical review 
    Nnabuife, Godfrey Somtochukwu; Oko, Eni; Kuang, Boyu; Bello, Abdulrauf; Onwualu, Azikiwe Peter; Oyagha, Sherry; Whidborne, James F. (Elsevier, 2023-05-25)
    Hydrogen (H2) usage was 90 tnes (Mt) in 2020, almost entirely for industrial and refining uses and generated almost completely from fossil fuels, leading to nearly 900 Mt of carbon dioxide emissions. However, there has ...
  • A prototype of an autonomous controller for a quadrotor UAV 
    Cowling, Ian D.; Yakimenko, Oleg A.; Whidborne, James F.; Cooke, Alastair K. (IEEE, 2007-02-02)
    The paper proposes a complete real-time control algorithm for autonomous collision-free operations of the quadrotor UAV. As opposed to fixed wing vehicles the quadrotor is a small agile vehicle which might be more suitable ...
  • Quadrotor system design for a 3 DOF platform based on iterative learning control 
    Foudeh, Husam A.; Luk, Patrick Chi-Kwong; Whidborne, James F. (IEEE, 2020-02-17)
    Research into autonomous control and behaviour of mobile vehicles has become more and more widespread. Unmanned aerial vehicles (UAVs) have seen an upsurge of interest and of the many UAVs available, the quadrotor has shown ...
  • Quasi-bilinear modelling and control of directional drilling 
    Inyang, Isonguyo J.; Whidborne, James F. (Inderscience for: Crop Science Society of America, 2020-05-27)
    A quasi-bilinear proportional-plus-integral (QBPI) controller is proposed for the attitude control of directional drilling tools for the oil and gas industry; and it is designed based on the proposed quasi-bilinear model ...
  • Road vehicle state estimation using low-cost GPS/INS 
    Tin Leung, King (Cranfield University, 2010-04-12)
    Due to noise and bias in the Inertial Navigation System (INS), vehicle dynamics measurements using the INS are inaccurate. Although alternative methods involving the integration of INS with accurate Global Positioning ...
  • Road vehicle state estimation using low-cost GPS/INS 
    Tin Leung, King; Whidborne, James F.; Purdy, David J.; Barber, Phil (Elsevier Science B.V., Amsterdam, 2011-08-01)
    Assuming known vehicle parameters, this paper proposes an innovative integrated Kalman filter (IKF) scheme to estimate vehicle dynamics, in particular the sideslip, the heading and the longitudinal velocity. The IKF is ...
  • Robust controller design using h-infinity loop-shaping and the method of inequalities 
    Whidborne, James F.; Postlethwaite, I.; Gu, Da-Wei (IEEE, 1994-12-01)
    A new approach to robust controller design is proposed. By using plant-weighting functions as the design parameters, the approach combines the method of inequalities with robust stabilization of normalized coprime factor ...
  • Robust gain-scheduled H [infinity] control for unmanned aerial vehicles 
    Chumalee, Sunan (Cranfield University, 2010-06)
    This thesis considers the problem of the design of robust gain-scheduled ight controllers for conventional xed-wing unmanned aerial vehicles (UAVs). The design approaches employ a linear parameter-varying (LPV) control ...
  • Scheduled flight control system of tilt-rotor VTOL PAV 
    Kang, Namuk; Whidborne, James F.; Lu, Linghai; Enconniere, Julien (AIAA, 2023-01-19)
    This paper develops the longitudinal flight control scheme for the tilt-rotor VTOL Aston Martin Volante Vision. It is envisaged that the aircraft will be flown by a "flight-naive pilot" who is less well-trained than normal. ...
  • Self-supervised learning-based two-phase flow regime identification using ultrasonic sensors in an S-shape riser 
    Kuang, Boyu; Nnabuife, Somtochukwu G.; Whidborne, James F.; Sun, Shuang; Zhao, Junjie; Jenkins, Karl W. (Elsevier, 2023-09-07)
    Two-phase flow regime identification is an essential transdisciplinary topic that spans digital signal processing, artificial intelligence, chemical engineering, and energy. Multiphase flow systems significantly impact ...
  • Severe slug mitigation in an S-shape pipeline-riser system by an injectable venturi 
    Inok, Joseph; Lao, Liyun; Cao, Yi; Whidborne, James F. (Elsevier, 2019-08-21)
    Severe slugging is a cyclic flow regime that causes pressure, flow and temperature oscillations which leads to an intermittent delivery of liquid (oil and water) and gas to processing facilities during hydrocarbon extraction ...
  • Simulation of wake vortex effects for UAVs in close formation flight 
    Saban, Deborah; Whidborne, James F.; Cooke, Alastair K. (Royal Aeronautical Society, 2009-11-30)
    This paper addresses the development of multiple UAV deployment simulation models that include representative aerodynamic cross-coupling effects. Applications may include simulations of autonomous aerial refuelling ...
  • Slug flow control in an S-shape pipeline-riser system using an ultrasonic sensor 
    Nnabuife, Somtochukwu Godfrey; Tandoh, Henry; Whidborne, James F. (Elsevier, 2021-12-11)
    Slugging flow poses significant challenges to the offshore multiphase flowline and riser systems. Slug flow is characterized by an uneven flow regime whereby pipeline pressures, temperatures, or flow volume rates fluctuate. ...
  • Slug flow control using topside measurements: a review 
    Nnabuife, Somtochukwu Godfrey; Tandoh, Henry; Whidborne, James F. (Elsevier, 2021-11-19)
    Slugging flow is a condition caused by a liquid obstruction at the riser base. It exhibits cyclic behaviour. The cycle consists of a protracted time of no gas production at the riser's top, followed by the arrival of a ...
  • Slug flow regime in a flowline with U-shape riser 
    Tandoh, Henry; Nnabuife, Somtochukwu Godfrey; Cao, Yi; Lao, Liyun; Whidborne, James F. (Elsevier, 2022-10-29)
    A suitable initial point for understanding multiphase flows is a phenomenological description of the mechanism of geometric distributions or flow patterns that are observed. The challenge however is the prediction of the ...
  • State-Space Modeling of a Class E2 Converter for Inductive Links 
    Luk, Patrick Chi-Kwong; Aldhaher, Samer; Fei, Wei-Zhong; Whidborne, James F. (IEEE, 2015-01-06)
    This paper presents a state-space-based analysis of a Class E2 converter for wireless power systems based on a twocoil inductive link. The Class E2 converter consists of a 200-kHz Class E inverter as the primary coil ...
  • Towards Autonomy of a Quadrotor UAV 
    Cowling, Ian (Cranfield University, 2008-10)
    As the potential of unmanned aerial vehicles rapidly increases, there is a growing interest in rotary vehicles as well as fixed wing. The quadrotor is small agile rotary vehicle controlled by variable speed prop rotors. ...