Browsing by Author "Whidborne, James F."

Browsing by Author "Whidborne, James F."

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  • 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. ...
  • Tuning Class E Inverters Applied In Inductive Links Using Saturable Reactors 
    Aldhaher, Samer; Luk, Patrick Chi-Kwong; Whidborne, James F. (IEEE Institute of Electrical and Electronics, 2014-06-01)
    This paper investigates the performance of Class E inverters used in wireless power transfer applications based on resonant inductive coupling. The variations in the load and the distance between the coils cause Class E ...
  • A Unified Closed-Loop Stability Measure for Finite-Precision Digital Controller Realizations Implemented in Different Representation Schemes. 
    Wu, Jun; Chen, Sheng; Whidborne, James F.; Chu, Jian (IEEE Institute of Electrical and Electronics, 2003-05-01)
    A computationally tractable unified finite word length closed-loop stability measure is derived which is applicable to fixed-point, floating-point and block- floating-point representation schemes. Both the dynamic range ...
  • A unifying framework for finite wordlength realizations 
    Hilaire, Thibault; Chevrel, Philippe; Whidborne, James F. (IEEE, 2007-08)
    A general framework for the analysis of the finite wordlength (FWL) effects of linear time-invariant digital filter implementations is proposed. By means of a special implicit system description, all realization forms ...
  • Venturi multiphase flow measurement based active slug control 
    Nnabuife, Somtochukwu Godfrey; Whidborne, James F.; Liyun Lao, Liyun; Cao, Yi (IEEE, 2019-11-11)
    Riser slug flow poses a significant challenge to offshore oil production systems, most especially for oil fields in their later life. Active control of slugging through choking has been proven a practical approach in ...
  • Visual flight rules-based collision avoidance systems for UAV flying in civil aerospace 
    Alturbeh, Hamid; Whidborne, James F. (MDPI, 2020-02-25)
    The operation of Unmanned Aerial Vehicles (UAVs) in civil airspace is restricted by the aviation authorities, which require full compliance with regulations that apply for manned aircraft. This paper proposes control ...