摘要：Shape rolling is widely employed in the production of long workpieces with appropriate cross-section profiles for other industrial applications. In the development of shape rolling systems, roll pass design (RPD) plays an essential role on the quality control of products, service life of rolls, productivity of rolling systems, as well as energy consumption of rolling operations. This study attempts to establish a generic strategy based on hybrid modeling and an improved genetic algorithm, to support the optimizations of RPD and shape rolling operations at a systematic perspective. Objectives include improving the quality and efficiency of RPD, reducing energy consumption of shape rolling, as well as releasing the demands on costly trails and expert knowledge in RPD. Hybrid modeling based on cross-disciplinary knowledge is developed to overcome the limitations of isolated single-disciplinary models. And conventional genetic algorithm is improved for the implementation of optimal design. Targeting to integrate empirical data and published reliable solutions into optimizations, a parameters estimation method is proposed to transfer the initially misaligned models into a uniform pattern. A tool based on the Matlab platform is developed to demonstrate the optimal design operations, with case studies involved to validate the proposed methodology.

摘要：Themodelofpredictingdistributionsofstripthicknessattheexitandtensionstressesisestab-lishedbyconsideringmetallateralflow,anewkindofmet***g***　roll　profile,Optimization,Loaded　roll　gap

摘要：多波束系统是多传感器系统,各传感器安装位置、角度等都会影响测量成果精度。主要介绍GeoSwath多波束在外业采集中要注意的质量控制,保证数据质量和精度,为内业成图提供可靠、准确的数据,保证成果的可靠性和准确性。

摘要：文章介绍了长基线系统(Long Baseline)相对和绝对校准工作,分析了姿态补偿纵摇(Pitch)和横摇(roll)对水下信标定位精度的影响机理,对无姿态补偿的绝对位置传递的可行性进行了可行分析研究,给出了基于最小二乘的信标位置计算方法。分析计算了Pitch和roll的影响。对比了计算得到的无姿态补偿的结果与有姿态补偿结果符合情况及差异,得出了无姿态补偿计算结果可信的结论。该方法满足大多数水下定位作业的要求。利用该方法进行了海上实地测试,验证了通过多个水下信标构成的基阵,在进行相对校准和绝对校准后,在无姿态补偿情况下亦可以完成水下构件安装等高精度水下工程。