Browsing by Author "Whidborne, James F."

Browsing by Author "Whidborne, James F."

Sort by: Order: Results:

  • Barden, Jason (Cranfield University, 2013-04)
    Most heavy goods vehicles in service today are fitted with add-on aerodynamic devices. The most common of which is the cab-mounted roof deflector. Such devices provide appreciable drag savings, however, they are often ...
  • Hayes, David; Lone, Mudassir; Whidborne, James F.; Camberos, José; Coetzee, Etienne (Elsevier, 2017-08-05)
    Thermodynamic analysis methods, based on an exergy metric, have been developed to improve system efficiency of traditional heat driven systems such as ground based power plants and aircraft propulsion systems. However, in ...
  • Dababneh, Odeh; Kipouros, Timoleon; Whidborne, James F. (MDPI, 2018-01-04)
    In this paper, a practical optimization framework and enhanced strategy within an industrial setting are proposed for solving large-scale structural optimization problems in aerospace. The goal is to eliminate the difficulties ...
  • Chen, Li; Whidborne, James F.; Dong, Qi; Duan, Deng Ping (SAGE, 2017-04-03)
    The problem of the design of a controller for a multi-vectored propeller airship is addressed. The controller includes anti-windup that takes into account unsymmetrical actuator constraints. First, a linear transformation ...
  • Inyang, Isonguyo J.; Whidborne, James F. (Elsevier, 2018-01-11)
    Recently, a Bilinear Proportional plus Integral (BPI) controller was proposed for the control of directional drilling tools commonly used in the oil industry However, there are delays in the measurement signals which reduces ...
  • Panchal, Neilkunal; Bayliss, Martin T.; Whidborne, James F. (Iet, 2012-05-31)
    A general approach for the attitude control of directional drilling tools for the oil and gas industry is proposed. The attitude is represented by a unit vector, thus the non-linearities introduced by Euler angle ...
  • Seah, Chee Hwee; Inyang, Isonguyo J.; Whidborne, James F. (Elsevier, 2018-01-11)
    The design of a bilinear controller for a quadrotor and its subsequent stability and performance are presented. A Carleman bilinearization technique is applied to the the nonlinear equations of motion of a quadrotor to ...
  • Inyang, Isonguyo J.; Whidborne, James F.; Bayliss, Martin T. (IEEE, 2016-11-10)
    This paper presents the design of an inclination- and azimuth-hold controllers and their subsequent stability and performance analysis for directional drilling tools as typically used in the oil industry. Using an input ...
  • Alturbeh, Hamid (Cranfield University, 2014-11)
    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 thesis proposes control algorithms ...
  • Azzopardi, Marc Anthony (Cranfield University, 2015-04)
    World air transport has been on a steady exponential rise since the 1940’s and the trend has shown remarkable resilience to external shocks. The level of air traffic has greatly exceeded the wildest expectations of the ...
  • McKernan, John (Cranfield University, 2006-04)
    Control of the transition of laminar flow to turbulence would result in lower drag and reduced energy consumption in many engineering applications. A spectral state-space model of linearised plane Poiseuille flow with wall ...
  • Akhtar, Naseem (Cranfield University, 2010-01)
    Thermal and dynamic soaring are two techniques commonly used by birds to extract energy from the atmosphere. This enables them to reduce, energy used during flight and increases their endurance. The thermal soaring ...
  • Armanini, S. F.; Polak, M.; Gautrey, James E.; Lucas, A.; Whidborne, James F. (Springer, 2016-10-01)
    With the increased use of unmanned aerial systems (UAS) for civil and commercial applications, there is a strong demand for new regulations and technology that will eventually permit for the integration of UAS ...
  • Ghole, Amaan (Cranfield University, 2016-08)
    Directional drilling is a very important tool for the development of oil and gas deposits. Attitude control which enables directional drilling for the efficient placement of the directional drilling tools in petroleum ...
  • McKernan, John; Whidborne, James F.; Papadakis, George (Springer Science Business Media, 2009-02-01)
    This paper investigates the use of the method of inequalities (MoI) to design output-feedback compensators for the problem of the control of instabilities in a laminar plane Poiseuille flow. In common with many flows, ...
  • Farman, Judith R.; Teixeira, Joao A.; Whidborne, James F.; Mba, David; Natanzi, Shahab (European Wave and Tidal Energy Conference, 2013-09)
    This paper presents the development of a control strategy that allows a dedicated oscillating water column turbine test facility to produce polychromatic waves. This facility allows testing of bi-directional turbines under ...
  • Aldhaher, Samer; Luk, Patrick Chi-Kwong; Whidborne, James F. (IEEE Institute of Electrical and Electronics, 2014-11-01)
    The misalignment and displacement of inductively coupled coils in a wireless power transfer system (WPT) can degrade the power efficiency and limit the amount of power that can be transferred. Coil misalignment leads the ...
  • Whidborne, James F. (Elsevier, 1993-09-01)
    For the effective operation of a magnetically levitated (maglev) vehicle using electro-magnetic suspension, it is necessary that the airgap between the guideway and the levitating magnets is maintained. Such systems, where ...
  • Hayes, D.; Lone, M. Mudassir; Whidborne, James F. (American Institute of Aeronautics and Astronautics, 2017-01)
    The design and development processes for future aircraft aims to address the environmental and efficiency challenges needed to facilitate the engineering of concepts that are far more integrated and require a multidisciplinary ...
  • Marks, Aryeh (Cranfield University, 2015-02)
    The octorotor is an unmanned VTOL capable vehicle with eight motors with xed pitch rotors. It is controlled by varying the speeds of its eight motors which are placed around the vehicle. There is no need for a complex ...