Mathias Lidberg

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Leukaemia is one of the most prominent late effects of exposure to ionising radiation. We have studied the incidence of leukaemia among 46,988 Swedish patients exposed to iodine-131 (131I) for diagnostic reasons or to treat hyperthyroidism or thyroid cancer. The observed number of leukaemias was compared with that expected based on incidence data from the(More)
The decreasing cost of sensory technologies including camera and radar has facilitated the outspread of advanced driver assistance (ADAS) systems into modern vehicles. ADAS systems can operate beyond the scope of stability control, by employing autonomous intervention in both longitudinal and lateral direction. Adaptive cruise control and lane-keeping aid(More)
In an emergency situation prior to an imminent accident, first in-vehicle warning systems would intervene and aim to make the driver to take a suitable action. If the risk of accident was not eliminated, then an autonomous collision avoidance manoeuvre can prevent it. In this work, path and speed control are intended to be used to perform such a manoeuvre(More)
The optimal manoeuvering of a vehicle during a collision avoidance manoeuvre is investigated. A simple model where the vehicle is modelled as point mass and the mathematical formulation of the optimal manoeuvre are presented. The resulting two-point boundary problem is solved by an adaptive finite element method and the theory behind this method is(More)
This paper suggests a metric defining the margin of the actual longitudinal speed to a speed at which either the front or rear tires reach saturation. This margin is referred to as the safety margin of the vehicle. It is shown that this safety margin is particularly useful for systems that use continuous yaw-rate error elimination, such as advanced AWD(More)
A complete vehicle combination controller for enhancing the lateral stability of long heavy vehicle combinations by active steering of the towed units is presented. As a case study, the controller is developed for a truck-dolly-semitrailer combination and is evaluated in a sine with dwell maneuver, using a nonlinear model of this combination. The simulation(More)
Feasibility of eigenstructure assignment for controlling lateral performance of longer combination vehicles is investigated. As a sample case, a controller is designed for a truck-dolly-semitrailer combination based on partial eigenstructure assignment and frequency response analysis. The results of simulations with a nonlinear vehicle model show(More)
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