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动车组司机室铜管优化操作法
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作者 赵子义 王砚良 +2 位作者 李超 寇许 廉小增 《价值工程》 2020年第4期288-289,共2页
动车组司机室空调管路为紫铜管,连接方式为车上焊接,然而司机室铜管并不外露,焊口部位在隐蔽处,焊接难度高,这种焊接要求极严,焊接人员需要有欧洲认证的操作证,而且焊接过程操作复杂,不能有一丝一毫的差错,否则很容易造成泄露。在不改... 动车组司机室空调管路为紫铜管,连接方式为车上焊接,然而司机室铜管并不外露,焊口部位在隐蔽处,焊接难度高,这种焊接要求极严,焊接人员需要有欧洲认证的操作证,而且焊接过程操作复杂,不能有一丝一毫的差错,否则很容易造成泄露。在不改变设计图纸的前提下,为了解决这个难题,我发明动车组司机室铜管优化操作法,将司机室里面相邻的两根管材变为一根管材,用数控弯管机整体弯制出来。 展开更多
关键词 坐标 数控弯管机回弹分析 计算 动车组司机室铜管 优化操作法
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Optimization Algorithm for Operation Comfortability of Master Manipulator of Minimally Invasive Surgery Robot 被引量:2
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作者 李进华 王雪生 +3 位作者 邢元 王树新 李建民 梁科 《Transactions of Tianjin University》 EI CAS 2016年第2期95-104,共10页
To evaluate the operation comfortability in the master-slave robotic minimally invasive surgery(MIS), an optimal function was built with two operation comfortability decided indices, i.e., the center distance and volu... To evaluate the operation comfortability in the master-slave robotic minimally invasive surgery(MIS), an optimal function was built with two operation comfortability decided indices, i.e., the center distance and volume contact ratio. Two verifying experiments on Phantom Desktop and Micro Hand S were conducted. Experimental results show that the operation effect at the optimal relative location is better than that at the random location, which means that the optimal function constructed in this paper is effective in optimizing the operation comfortability. 展开更多
关键词 MIS robot master manipulator operation comfortability Phantom Desktop Micro Hand S
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Specific energy optimization in sawing of rocks using Taguchi approach 被引量:2
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作者 Izzet Karakurt 《Journal of Central South University》 SCIE EI CAS 2014年第1期365-372,共8页
This work aims at selecting optimal operating variables to obtain the minimum specific energy(SE) in sawing of rocks.A particular granite was sampled and sawn by a fully automated circular diamond sawblades.The periph... This work aims at selecting optimal operating variables to obtain the minimum specific energy(SE) in sawing of rocks.A particular granite was sampled and sawn by a fully automated circular diamond sawblades.The peripheral speed,the traverse speed,the cut depth and the flow rate of cooling fluid were selected as the operating variables.Taguchi approach was adopted as a statistical design of experimental technique for optimization studies.The results were evaluated based on the analysis of variance and signal-to-noise ratio(S/N ratio).Statistically significant operating variables and their percentage contribution to the process were also determined.Additionally,a statistical model was developed to demonstrate the relationship between SE and operating variables using regression analysis and the model was then verified.It was found that the optimal combination of operating variables for minimum SE is the peripheral speed of 25 m/s,the traverse speed of 70 cm/min,the cut depth of 2 cm and the flow rate of cooling fluid of 100 mL/s.The cut depth and traverse speed were statistically determined as the significant operating variables affecting the SE,respectively.Furthermore,the regression model results reveal that the predictive model has a high applicability for practical applications. 展开更多
关键词 circular diamond sawblades GRANITE specific energy Taguchi approach
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A Composite Model Predictive Control Strategy for Furnaces
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作者 臧灏 李宏光 +1 位作者 黄静雯 王佳 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2014年第7期788-794,共7页
Tube furnaces are essential and primary energy intensive facilities in petrochemical plants. Operational optimization of furnaces could not only help to improve product quality but also benefit to reduce energy consum... Tube furnaces are essential and primary energy intensive facilities in petrochemical plants. Operational optimization of furnaces could not only help to improve product quality but also benefit to reduce energy consumption and exhaust emission. Inspired by this idea, this paper presents a composite model predictive control(CMPC)strategy, which, taking advantage of distributed model predictive control architectures, combines tracking nonlinear model predictive control and economic nonlinear model predictive control metrics to keep process running smoothly and optimize operational conditions. The controllers connected with two kinds of communication networks are easy to organize and maintain, and stable to process interferences. A fast solution algorithm combining interior point solvers and Newton's method is accommodated to the CMPC realization, with reasonable CPU computing time and suitable online applications. Simulation for industrial case demonstrates that the proposed approach can ensure stable operations of furnaces, improve heat efficiency, and reduce the emission effectively. 展开更多
关键词 FURNACE Tracking nonlinear model predictive control Economic nonlinear model predictive control Distributed model predictive control
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