The battery charging system is a critical part of a plug-in hybrid electric vehicle (PHEV). The efficiency, charging speed, and cost of such chargers are crucial to the commercialisation of PHEVs. In this paper, the advantages and drawbacks of four potential PHEV charger topologies were compared based on their operations through simulation and experiments. Their electrical stress, efficiency, c...

Emerging wide bandgap (WBG) semiconductors, such as silicon carbide (SiC), will enable chargers to operate at higher switching frequencies, which grants the ability deliver high power and enhances efficiency. This paper addresses modeling of a double-sided cooling (DSC) SiC technology-based off-board charger for battery electric buses (BEBs) design its control real-time (RT) implementation. A t...

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Robotic planetary exploration is a major component of the United States’ NASA space science program. The focus of our research is to develop rover planning and control algorithms for high-performance robotic planetary explorers based on the physics of these systems. Experimental evaluation is essential to ensure that unmodeled effects do not degrade algorithm performance. To perform this evalua...

The introduction of new technologies into vehicles has been imposing new forms of interaction, being a challenge to drivers but also to HMI research. The multiplicity of on-board systems in the market has been changing the driving task, being the consequences of such interaction a concern especially to older drivers. Several studies have been conducted to report the natural functional declines ...

The system requirements of space on-board computer necessary to realize not only high reliability but also low cost are discussed. An architecture and high assurance timing synchronization technology that meet the requirements are proposed.

We present a detailed and systematic investigation of correlated spectral and timing properties of the Z source GX 349+2, using a huge amount (∼ 40 ks) of good quality data from September 29, 1998 to October 13, 1998, obtained with the Proportional-Counter-Array on-board RXTE satellite. We, for the first time, give a detailed comparison between the normal-branch-properties and the flaring-branc...

This paper describes how a set of off-the-shelf general purpose digital computers is being managed in a redundant avionic configuration while performing flight-critical functions for the Space Shuttle. The description covers the architecture of the redundant computer set, associated redundancy design requirements, and the technique used to detect a failed computer and to identify this failure o...

On-board diagnostic systems play an important role in the current generation of cars and will play an increasingly important role in the next future . The design of on-board diagnostic systems is a challenging problem under several points of view . In this paper we discuss the experience we made on such a problem within the VMBD project . In particular, we discuss an approach which tries to rec...

Logical layers enable structuring of reactive systems in a fashion that is orthogonal to conventional components. We introduce a case study, where such layers are used to structure a formal spec-iication of an on-board instrument. The speciication starts at an abstract level, and advances towards a detailed description of the instrument with reenement steps whose size is manageable. Finally, we...