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Steering-gear.

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The use of wheel-individual drives on the steered axle simultaneously enables propulsion and implementation of steering assistance. This work presents a closed-loop and open-loop method for controlling wheel-selective drives with the aim of reducing the steering wheel torque. The proposed optimal linear-quadratic-integral controller achieves a high control quality while ensuring driving safety and reducing energy consumption.

Mechanical engineering & materials --- wheel individual --- steering assistance --- steering torque --- closed-loop control --- Open-loop control --- radselektiv --- Lenkkraftunterstützung --- Lenkradmoment --- Regelung --- Steuerung

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The emergence of electric drives opens up new opportunities in vehicle design. For example, powerful in-wheel motors pro -vide unprecedented flexibility in chassis design and are suitable for distributed drive solutions, although implying non-trivial vehicle dynamics control problems. This work aims at a new differential steering concept relying only on passive steering linkages where the necessary steering moment about the kingpins is generated by traction force differences produced by in-wheel motors. For the analysis of the proposed steering concept, a tailored multi-body system model is introduced along with the associated steering control system. In addition, this work explores the general applicability of such a new steering concept by using multi-objective optimisation. For this purpose, various design objectives and constraints are defined with respect to the dynamic, steady-state and low-speed steering performance of the vehicle. The resulting behaviour of the proposed steering concept is investigated by various simulation experiments demonstrating a comparable steering performance to that of conventional passenger cars.

Electric vehicles. --- Steering-gear. --- Rudder --- Marine engineering --- EVs (Electric vehicles) --- Vehicles, Electric --- Motor vehicles

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In this thesis a hydrostatic steer-by-wire valve with independent metering edges is analysed regarding its usability in safety critical applications. Doing experimental investigations it is shown, that valve faults can be compensated by the system in order to guarantee the steerability. Because of the chosen valve concept and the fact that valve faults can be detected without position sensors at each valve, the system complexity of the chosen solution is low.

FehlertoleranzHydrostatic steering system --- unabhängige Steuerkanten --- Traktor --- Steer-by-Wire --- steer-by-wire --- fault tolerance --- independent metering edges --- tractor --- Hydrostatisches Lenksystem

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An essential tool for those planning to undertake social research, this exceptional book tackles many of the specific concerns and issues that arise. A well structured text, it offers a comprehensive introduction to a range of important areas in project management, including: commissioning research preparing a tender or grant application risk and stakeholder analysis managing the field work and data analysis financial managementethics, confidentiality and copyright.This book provides a unique source of guidance for anyon

Social sciences --- Sciences sociales --- Research --- Recherche --- Research. --- #PBIB:2005.4 --- Social science research --- association --- data --- protection --- act --- steering --- committee --- project --- life --- cycle --- supplier