Acquisition and tracking performance measurements for a high-speed area array detector system

1991 ◽  
Author(s):  
Ralph C. Short ◽  
Michael A. Cosgrove ◽  
David L. Clark ◽  
Anthony J. Martino ◽  
Hongwoo Park ◽  
...  
Keyword(s):  
High Speed ◽  
Detector System ◽  
Tracking Performance ◽  
Array Detector ◽  
Performance Measurements ◽  
Area Array

scholarly journals Integration and first data with a Pilatus3 6M at APS beamline 23ID-D

2014 ◽  
Vol 70 (a1) ◽  
pp. C691-C691
Author(s):  
Ruslan Sanishvili ◽  
Oleg Makarov ◽  
Mark Hilgart ◽  
Sudhir-Babu Pothineni ◽  
Sergey Stepanov ◽  
...  
Keyword(s):  
Data Collection ◽  
High Speed ◽  
Frame Rate ◽  
Array Detector ◽  
Sensitive Area ◽  
Performance Measurements ◽  
Fully Integrated ◽  
Rate Oscillation ◽  
Order Of Magnitude ◽  
New Generation

GM/CA@APS operates two insertion-device beamlines, 23ID-B and 23ID-D, and one bending magnet beamline, 23BM-B, in sector 23 of the Advanced Photon Source. We recently integrated a Pilatus3 6M detector - a new generation of large sensitive area detectors based on pixel array detector technology and marketed by Dectris. The sensitive area of the device is 423.6 mm × 434.6 mm. The Pilatus3 features the newly implemented re-triggering mechanism that increases the count-rate capabilities by almost an order of magnitude compared to previous generation Pilatus detectors. The detector installed on beamline 23ID-D is the first Pilatus3 6M with a 1000-micron thick sensor, offering higher efficiency at energies above 12 keV. The fast read-out (0.95 ms) and high speed (up to 100 Hz) of the detector allow shutterless data collection. The detector has been fully integrated into the JBluIce user interface and data processing pipeline at GM/CA. Systematic studies with protein crystals were carried out in order to optimize data collection parameters. Overall data collection speed (frame rate), oscillation width per frame, spindle axis speed, and re-triggering have been studied. Different sets of optimal parameters have been established for crystallographic data collection and for crystal screening with the raster feature (grid scanning). The results of these studies and of performance measurements will be presented. This project and GM/CA @ APS are supported by the National Institute of General Medical Sciences and Cancer Institute of NIH.

The Application of PIV in the Study of Impeller-Diffuser Interaction in Centrifugal Fan: Part I — Impeller-Vaneless Diffuser Interaction

2001 ◽  
Author(s):  
Tarek Mekhail ◽  
Zhang Li ◽  
Du Zhaohui ◽  
Willem Jansen ◽  
Chen Hanping
Keyword(s):  
Flow Field ◽  
Flow Rate ◽  
High Speed ◽  
Maximum Flow ◽  
Image Processing Technique ◽  
High Speed Photography ◽  
Centrifugal Fan ◽  
Performance Measurements ◽  
Vaneless Diffuser ◽  
Unstable Flow

Abstract The PIV (Particle Image Velocimetry) technology is a brand-new technique of measuring velocity. It started in the 1980’s with the development of high-speed photography and the image processing technique of computers. This article deals with PIV applied to the study of unsteady impeller-vaneless diffuser interaction in centrifugal fen. Experiments were carried out at The Turbomachinery Laboratory of Shanghai Jiaotong University. The test rig consists of a centrifugal, shrouded impeller, diffuser and volute casing all made of plexiglass. A series of performance measurements were carried out at different speeds and different vaneless diffuser widths. PIV measurements were applied to measure the unsteady flow at the exit part of the impeller and the inlet part of the diffuser for the case of the same width vaneless diffuser. The absolute flow field is measured at medium flow rate and at maximum flow rate. It is informative to capture the whole flow field at the same instant of time, and it might be more revealing to observe the unstable flow in real time.

scholarly journals Adaptive PD Sliding Mode Control For 4 DOF SCARA Variant

2021 ◽  
Author(s):  
Manjeet Tummalapalli
Keyword(s):  
Sliding Mode Control ◽  
Trajectory Tracking ◽  
High Speed ◽  
Sliding Mode ◽  
Adaptive Controller ◽  
Degree Of Freedom ◽  
Tracking Performance ◽  
Advantages And Disadvantages ◽  
Model Free ◽  
Adaptive Law

This project proposes a new SCARA variant with 4 degree of freedom. The proposed variant is achieved by swapping joint 2 and joint 3 of the standard SCARA robots. An adaptive controller is defined based on the advantages and disadvantages of PD, and SMC controllers.The purpose of the project is to understand the dynamics of the variant and to track the performance for trajectories. Simulations for tracking performance are carried under linear and circular trajectories. The variant is studied over the three controllers; PD, PD-SMC and A-PD-SMC. The variant under the adaptive controller is most efficient in terms of tracking performance and the control inputs to the system. The system is simulated under high speed and with the influence of friction at the joints. The control gains are held constant for both the trajectories and hence the controller is able to perform good under changing trajectories. Due to the use of the adaptive law, the system is at the ease of implementation and since no priori knowledge if the system is needed, it is model free. Therefore, the proposed adaptive PD-SMC has proven to provide good, robust trajectory tracking.

scholarly journals The Design and Evaluation of a High Pressure Ratio Radial Turbine

1992 ◽  
Author(s):  
K. R. Pullen ◽  
N. C. Baines ◽  
S. H. Hill
Keyword(s):  
High Pressure ◽  
High Speed ◽  
Pressure Ratio ◽  
Performance Measurements ◽  
Turbine Engine ◽  
High Pressure Ratio ◽  
Turbine Efficiency ◽  
Wide Range ◽  
Dimensional Parameters ◽  
Very High

A single stage, high speed, high pressure ratio radial inflow turbine was designed for a single shaft gas turbine engine in the 200 kW power range. A model turbine has been tested in a cold rig facility with correct simulation of the important non-dimensional parameters. Performance measurements over a wide range of operation were made, together with extensive volute and exhaust traverses, so that gas velocities and incidence and deviation angles could be deduced. The turbine efficiency was lower than expected at all but the lowest speed. The rotor incidence and exit swirl angles, as obtained from the rig test data, were very similar to the design assumptions. However, evidence was found of a region of separation in the nozzle vane passages, presumably caused by a very high curvature in the endwall just upstream of the vane leading edges. The effects of such a separation are shown to be consistent with the observed performance.

A high-speed pnCCD detector system for optical applications

2006 ◽  
Vol 568 (1) ◽  
pp. 118-123 ◽  
Author(s):  
R. Hartmann ◽  
W. Buttler ◽  
H. Gorke ◽  
S. Herrmann ◽  
P. Holl ◽  
...  
Keyword(s):  
High Speed ◽  
Detector System ◽  
Optical Applications

High-speed multi-beam X-ray imaging using a lens coupling detector system

2020 ◽  
Vol 13 (7) ◽  
pp. 077002 ◽  
Author(s):  
Tetsuroh Shirasawa ◽  
Liang Xiaouyu ◽  
Wolfgang Voegeli ◽  
Etsuo Arakawa ◽  
Kentaro Kajiwara ◽  
...  
Keyword(s):  
High Speed ◽  
Detector System ◽  
X Ray ◽  
X Ray Imaging ◽  
Lens Coupling

A Short-Range Millimeter-Wave Detector System

2013 ◽  
Vol 347-350 ◽  
pp. 102-106
Author(s):  
Shu Sheng Peng ◽  
Feng Xu ◽  
Li Wu ◽  
Jian Zhong Xu
Keyword(s):  
Millimeter Wave ◽  
High Speed ◽  
Short Range ◽  
Digital Signal ◽  
Low Noise ◽  
Detector System ◽  
Wave Detector ◽  
Front End ◽  
Noise Amplifier ◽  
Heterodyne Signal

This paper is focused on a millimeter-wave detector system that works at self-heterodyne mode. The detector antenna and MMW front-end are integrated and a weak heterodyne signal is amplified with a low-noise amplifier. After high-speed sampled with a high-speed A/D, digital signal are processed in a FPGA. Some experiment results are shown finally.

Silicon array detector system for high-rate, low-noise X-ray spectroscopy

1999 ◽  
Vol 46 (4) ◽  
pp. 886-889 ◽  
Author(s):  
B.A. Ludewigt ◽  
B. Krieger ◽  
D. Lindstrom ◽  
M.R. Maier ◽  
M. Rutgersson ◽  
...  
Keyword(s):  
Low Noise ◽  
Detector System ◽  
High Rate ◽  
Array Detector ◽  
X Ray

SU-GG-T-239: Initial Experience of Patient Specific Rotational Quality Assurance for VMAT Using a Cylindrical Diodes Array Detector System

2010 ◽  
Vol 37 (6Part19) ◽  
pp. 3240-3240
Author(s):  
S Qi ◽  
A Hu ◽  
D Westerly ◽  
H Rice ◽  
F Newman ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Detector System ◽  
Patient Specific ◽  
Array Detector ◽  
Initial Experience
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