Search Results

Both the electrical portion of the powertrain and the rising number of auxiliary systems will considerably increase the electrical power requirements in future vehicles. In addition, multiple voltage supply levels will enhance the complexity of the electrical distribution system (EDS), while strict cost, weight, packaging, and safety constraints must be upheld, posing serious design challenges in terms of robustness, reliability and energy efficiency. Currently, a self-contained integral test or evaluation of the EDS is normally not applied. For such a purpose, quantitative quality criteria are introduced here which allow a comparative assessment of an EDS by addressing the dynamic and static stability of the supply voltage, the reliability of the fusing system, and the ability to provide the required electrical power. The presented approach uses both precisely-defined test scenarios and a comprehensive EDS test bench.

Full vehicle modal identification is a major challenge for both experimental and simulated modal results. A global modal is usually masked by nearby local modes, so that even well-experienced engineers have difficulty to identify vehicle modes efficiently. Besides different vehicle configurations e.g. SUV, MPV and hatchback can make the challenge even greater, since the same modal for them will present different characteristics. This paper proposes a deep neural network for vehicle modal identification. This method takes advantage of the deep learning method which has achieved outstanding performance in language translation, computer vision and image processing. It also has the potentiality to improve modal identification efficiency. In general commercial neural network applications, a large number of data is available for training to achieve a robust output.

This SAE Recommended Practice applies to electrically powered hydraulic or mechanically operated platform devices which permit a person seated in a manual or powered wheelchair to enter or exit a personally licensed vehicle. The minimum performance and durability requirements are specified for satisfactory installation of wheelchair lifting devices in a personally licensed vehicle to be used by a person seated in a wheelchair to be lifted from the ground plane to the vehicle floor level in a reliable and safe manner.

This SAE Recommended Practice applies to electrically powered hydraulic or mechanically operated platform devices which permit a person seated in a manual or powered wheelchair to enter or exit a personally licensed vehicle. The minimum performance and durability requirements are specified for satisfactory installation of wheelchair lifting devices in a personally licensed vehicle to be used by a person seated in a wheelchair to be lifted from the ground plane to the vehicle floor level in a reliable and safe manner.

This paper describes the current research efforts into automatic vehicle identification being undertaken as part of the Heavy Vehicle Electronic License Plate (HELP) program. Automatic Vehicle Identification (AVI) is the term used for techniques which uniquely identify vehicles as they pass specific points on the highway, without requiring any action by the driver or by an observer. It constitutes one of the three key technological elements, along with weigh in motion and automatic vehicle classification, which combine to form the HELP system. There are a number of alternative AVI technologies and systems under consideration for use in the HELP System, which are each briefly described in the paper. A comprehensive test program is now under way to evaluate the performance of each of these systems and technologies, with the aim of producing a definitive specification for an AVI system which will meet the needs of the HELP system.

The Harrier is still the world's most mis-understood fighter and V/STOL the world's most neglected military art. This paper, based on almost 30 years of V/STOL experience, attempts to remove some of the fog of misconception that surrounds tactical jet V/STOL and uncover its proven merits in a CTOL-dominated field. The need for V/STOL in tactical aviation is discussed and the Harrier set in its historical frame alongside the many essays in this field over the past 30 years. Operational experience with jet V/STOL is examined in the context of the flexibility and simplicity of Harrier's powered lift systems and flight modes, compared with other jet V/STOL vehicles. The paper goes on to discuss the military compulsions of jet V/STOL and show its practical worth in many tactical scenarios including an outline of its success in the 1982 Falklands campaign.