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35篇 您的检索式:作者名="Pitla"
    题名 作者 年代 出处 被引量
1基于超宽带无线定位的农业设施内移动平台路径跟踪研究显示文摘为实现农业设施内车辆自动导航,提出了一种基于超宽带(ultrawideband,UWB)无线定位的路径跟踪方法。运用4个基站组建UWB无线定位系统,采用加权最小二乘法(weighted least squares, WLS)法解超静定方程组,提高了移动标签的定位精度。重新定义前视距离,根据车体航向与前视直线的夹角界定车体偏差程度,并提出基于动态前视距离的改进型纯追踪模型。在MATLAB 2016a软件环境下的仿真说明该文算法优于采用固定视距的传统纯追踪算法,并进行实车试验。结果显示,在UWB定位系统的引导下,车体在不同初始状态下均能很好地收敛到期望直线,当速度为0.5 m/s时,在4种初始状态下进行直线跟踪,稳态偏差为5.4~8.4 cm,稳态偏差均值为6.3 cm。在矩形路径跟踪时,当横向偏差和航向偏差均为0的初始状态下,全程平均偏差为20.6 cm,跟踪偏差主要出现在90°转向处,最大偏差为85.5 cm,说明改进后的纯追踪算法的路径追踪质量均优于采用固定视距的传统纯追踪模型,能满足农业设施内移动平台自动导航的需求。该方法可为农业设施内车辆导航提供新思路。姚立健 Santosh K Pitla 杨自栋 夏坡坡 赵辰彦 2019农业工程学报2019,35,2:18
2New correlation to predict the heat transfer coefficient during in-tube cooling of turbulent supercritical CO2显示文摘PITLA S GROLL A RAMADHHYANI S 2002International Journal of Refrigeration2002,25,:1
3New correlation to predict the heat transfer coeffi- cient during in-tube cooling of turbulent supercriti-cal COz 显示文摘PITLA S S GROLL E A RAMADHHYANI S 2002International Journal of Refrigera- tion2002,25,7:1
4Vitamin D and calcium intake in relation to type 2 diabetes in women显示文摘Pitlas AG Dawson-Hughes B Li T 0,,03:1
5New correlation to predict the heat transfer coefficient during in-tube cooling of turbulent supercritical CO2显示文摘Pitla S S Groll E A Ramadhhyani S 2002International Journal of Refrigeration2002,25,7:1
6Convective heat transfer in-tube flow of turbulent supercritical carbon dioxide, Part 1: Numerical analysis显示文摘PITLA S S GROLL E A RAMADHYANI S 2001HVAC & R Research2001,7,4:1
7New correlation to predict the heat transfer coefficient during in -tube cooling of turbulent supercritical CO2显示文摘SRINIVAS S PITLA ECKHARD A GROLL SATISH RAMADHYANI 2002International Journal of Refrigeration2002,25,:1
8Status of B-vitamins and homocysteine in diabetic retinopathy: association with vitamin- B2 deficiency and hyperhomocysteinemia 显示文摘Satyanarayana A Balakrishna N Pitla S 2011PLoS One2011,6,26:1
9New correlation to predict the heat transfer coefficient during in-tube cooling of turbulent supercritical CO2 显示文摘Pitla S Groll A Ramadhhyani S 2002International Journal of Refrigeration2002,25,:1
10New correlation to predict the heat transfer coefficient during in-tube cooling of turbulent supercritical CO2显示文摘PITLA SS GROLL EA RAMADHHYANI S 2002International Journal of Refrigeration2002,25,7:1
11New correlation to predict the heat transfer coefficient during intube cooling of turbulent supercritical CO2显示文摘PITLA S S GROLL E A RAMADHHYANI S 2002International Journal of Refrigeration2002,25,7:1
12Status of B-vitamins and homocysteine in diabetic retinopathy: association with vitamin-B 12 deficiency and hyperho- mocysteinemia显示文摘Satyanarayana A Balakrishna N Pitla S 2011PLoS One2011,6,26:1
13Heat transfer from supercritical carbon dioxide in tube flow: a critical review 显示文摘Pitla S S Robinson D M Groll E A 1988International Journal HVAC and Refrigeration Re- search1988,4,3:1
14New correlation to predict the heat transfer coefficient during in-tube cooling of turbulent supercritical CO2 显示文摘Pitla SS Groll EA Ramadhhyani S 2002International Journal of Refrigeration2002,25,7:1
15Convective heat transfer from in-tube flow of turbulent supereritieal carbon dioxide: part 1--numerical analysis 显示文摘Pitla S S Ramadhyani S Groll E A 2001International Journal HVAC and Refrigeration Research2001,7,4:1
16Convective heat transfer from in-tube flow of turbulent supercritical carbon dioxide: part 2--experimental data and numerical predic- tion显示文摘Pitla S S Ramadhyani S Groll E A 2001International Journal HVAC and Refrigeration Re- search2001,7,4:1
17New correlation to predict the heat transfer coefficient during in-tube cooling of turbulent supercritical carbon dioxide 显示文摘Pitla S S Groll E A Ramadhyani S 2002International Journal of Refrigeration2002,25,7:1
18Clinical t'atures, mmlagement, and prooaosis of spontanexus coronary artery dissedion显示文摘Tweet MS Hayes SN Pitla SR et aJ 2012Circulation2012,126,:1
19New correlation to predict the heat transfer coefficient during in - tube cooling of turbulent supercritical CO2 显示文摘Pitla S S Groll E A Ramadhyani S 2002Internatinal Journal of Refrigeration2002,25,7:1
20New correlation to predict the heat transfer coef- ficient during in-tube cooling of turbulent supercritieal CO2 显示文摘Pitla S S Groll E A 2002Inter- national Journal of Refrigeration2002,25,7:1
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