the primary objective of this work is to introduce a gear ratio selection strategy for a cvt equipped vehicle and show its effectiveness on the fuel consumption reduction. afuzzy control algorithm is designed for this purpose. anonlinear model is developed for simulating the longitudinal vehicle dynamics with accelerator pedal applied by the driver as an input. in order that pedal input values ...

Louisiana State University Center for Advanced Microstructures and Devices (CAMD) began a control system upgrade project in early 1997. At the time, the storage ring was controlled by a VAX/VMS system, primarily using CAMAC for I/O. The injector Linac was controlled by a separate VME/OS/9 system using custom I/O components. The storage ring control system has been replaced with a PC/Linux based...

This paper introduces a specialized robotic system under development for radiosurgery using a small-sized linear accelerator. The robotic system is a 5-DOF manipulator that can be installed above a patient to make an upper hemispherical workspace centered in a target point. In order to determine the optimal lengths of the link, we consider the requirements for the workspace of a linear accelera...

Measurement and control of the tunes, coupling, and chromaticities in storage rings is essential to efficient operation of these accelerators. Yet it has been very difficult to make reliable realtime measurements of these quantities. We have built and commissioned the microprocessorbased Generic Finite State Data Acquisition (GFSDA) system. GFSDA provides turn-by-turn data acquisition and analy...

Vista Control Systems. Inc. has de~eloped a portable system for intelligent accelerator control. Our design is general in scope and is thus conf&urable to a wide range of accelerator facilities and control problems. The control system employs a multi-layer organization in which knowledge-based decision making is used to dynamically cordlgure lower level optimization and control algorithms. An o...

Practically every accelerator requires some kind of timing and synchronization. In this article, the technologies used in and relevant to timing systems, concepts of event timing and counter-based systems and approaches adopted at various accelerators are reviewed. The requirements concerning stability, precision and flexibility differ and a number of solutions to fulfill the needs are presente...

CRC is significantly more efficient in hardware than software; consequently, you can improve the throughput of your system by implementing a hardware accelerator for CRC. In addition, by eliminating CRC from the tasks that the processor must run, the processor has more bandwidth to accomplish other tasks. Figure 8–1 illustrates a system in which a Nios® II processor offloads CRC processing to a...

The 6 GeV CEBAF accelerator at Jefferson Lab is arranged in a five-pass racetrack configuration, with two superconducting radio frequency (SRF) linacs joined by independent magnet transport arcs. It is planned to increase the accelerator energy to eventually support 12 GeV operations. To achieve this, a new 7-cell superconducting cavity is being built to operate at an average accelerating gradi...