Peter Lingman

Optimation AB

At Swedish universities future process engineers and process developers are educated in master programs targeting specific branches of the industry, e.g. pulp and paper. Learning the fundamental dynamics of both unit processes and larger process sections encounter in the industry are of high importance for the students. In an effort to further impr...

A system and a method are provided for controlling a foundation brake of a vehicle having at least one foundation brake device, wherein the usability of the foundation brake is limited to a predetermined total application-time of the foundation brake within a predetermined time interval.

Rear axle steering (RAS) at low speed is available in heavy trucks to improve their manoeuverability and reduce tyre wear; by extending the functionality of the existing RAS to high speed turning and split-mu braking, considerable safety benefits and enhancement in driver comfort can be gained. In this study, a RAS System was developed and simulate...

In this paper open loop optimal trajectories for downhill driving are described. Problem formulation including process modelling, model simplification, transformation into a finite optimisation problem, and implementation into the TOMLAB optimisation package are presented. Results show that there is a large potential in controlling the complete bra...

In this thesis, downhill driving strategies that co-ordinate the different brake actuators in heavy duty vehicles have been developed. As a starting point, the vehicle features affected by the retardation system are investigated. The main conclusions are that the retardation power demand will increase in the future and that, therefore, optimization...

A brake system controller is designed using the powerful techniques of neural networks and genetic algorithms. First, the problem of coordinating auxiliary brakes, foundation brakes, and gear for high transport effectiveness in down hill cruising situations is investigated. An optimization problem with constraints such as vehicle speed and disc tem...

Using the powerful techniques of neural networks and genetic algorithms, a brake system controller is designed. First, the problem of blending auxiliary brakes, foundation brakes and gear for high mean speed in down hill cruising situations is investigated. An optimization problem with constraints such as vehicle speed and disc temperature is formu...

Kalman filtering is used as a powerful method to obtain accurate estimation of vehicle mass and road slope. First the problem of estimating the slope when the vehicle mass is known is studied using two different sensor configurations. One where speed is measured and one where both speed and specific-force is measured. A filter design principle is d...