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大力值精密机械力源的研制
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作者 唐纯谦 徐尹杰 +2 位作者 唐韵 易伟 贺建平 《宇航计测技术》 CSCD 2009年第4期22-25,共4页
运用"平面二次包络弧面蜗杆传动"技术,研制出一种"轴向可调隙蜗轮蜗杆传动付",将它应用到力源动力传动的伺服减速机构中,驱动精密滚珠丝杠上的动横梁来完成对参考力传感器的粗加载。运用物理学中的"逆压电效应... 运用"平面二次包络弧面蜗杆传动"技术,研制出一种"轴向可调隙蜗轮蜗杆传动付",将它应用到力源动力传动的伺服减速机构中,驱动精密滚珠丝杠上的动横梁来完成对参考力传感器的粗加载。运用物理学中的"逆压电效应"原理,采用压电陶瓷材料和专门的工艺方法制作的力传感器微变形补偿装置——压电陶瓷力调节器,并将它应用到力源的精加载闭环控制中,实现了大载荷下参考力传感器微小力值变化的精确控制,研制出的大力值精密机械力源最大负荷为3 MN。 展开更多
关键词 大力值 机械力源 蜗轮付 压电陶瓷器件 力传感器
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工程机械紧急液压动力源系统设计
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作者 张平 郑建校 +1 位作者 厉少长 吕刚 《筑路机械与施工机械化》 2013年第9期98-100,共3页
针对工程机械液压系统动力源出现故障后不能正常工作的现象,提出了一种采用直流电机驱动的紧急动力源设计方案。以同步碎石封层车的液压系统为例,进行了紧急动力源系统设计。分析计算表明,设备的蓄电池容量可以满足紧急动力源对能量的要... 针对工程机械液压系统动力源出现故障后不能正常工作的现象,提出了一种采用直流电机驱动的紧急动力源设计方案。以同步碎石封层车的液压系统为例,进行了紧急动力源系统设计。分析计算表明,设备的蓄电池容量可以满足紧急动力源对能量的要求,因此该方案可行。 展开更多
关键词 工程机械紧急动力源 直流电机 液压动力源 蓄电池容量
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3MN叠加式力标准机的研制 被引量:12
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作者 唐纯谦 高富荣 +4 位作者 陈明华 陈世超 徐尹杰 谭洪辉 易伟 《中国测试技术》 2008年第2期13-15,39,共4页
运用"平面二次包络环面蜗杆传动"原理,研制一种"轴向可调隙蜗轮蜗杆传动副",将它应用到机械力源动力传动的伺服电机减速机构中,驱动精密滚珠丝杠上的动横梁来完成对参考力传感器的粗加载。运用物理学中的"逆... 运用"平面二次包络环面蜗杆传动"原理,研制一种"轴向可调隙蜗轮蜗杆传动副",将它应用到机械力源动力传动的伺服电机减速机构中,驱动精密滚珠丝杠上的动横梁来完成对参考力传感器的粗加载。运用物理学中的"逆压电效应"原理,采用压电陶瓷材料和专门的工艺方法制作成的力传感器微变形补偿装置—压电陶瓷力发生装置,并将它应用到机械力源的精加载闭环控制中,实现了大载荷下参考传感器微小力值变化的精确控制。研制最大负荷为3MN的叠加式力标准机。 展开更多
关键词 平面二次包络环面蜗杆传动 压电陶瓷 逆压电效应 压电陶瓷力发生装置 参考传感器 机械力源 叠加式力标准机
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Lack of Skills of Human Resources in the Machine Construction Industry
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作者 Filip Busina Elena Dmitrievna Korshunova 《Journal of Modern Accounting and Auditing》 2015年第8期420-428,共9页
The paper summarises the results of a questionnaire survey that took place in January 2015 in order to assess the current and prospective standard of the qualification of human resources in machine construction compan... The paper summarises the results of a questionnaire survey that took place in January 2015 in order to assess the current and prospective standard of the qualification of human resources in machine construction companies in the Czech Republic. The questionnaire survey included 23 small machine construction companies (less than 50 employees), 24 medium-sized machine construction companies (50-249 employees), and 53 larger machine construction companies (250 and more employees). The results of the survey indicated that almost one half (43%) of respondent machine construction company top management members planned to hire new employees this year. In addition, 50% of them confirmed their endeavour to keep the current headcount and a mere 7% of them specified problems that would lead to the dismissal of employees. However, what is bothering machine construction top management members is the lack of qualifications and practical experience of job seekers they have to deal with. The intention of the authors is to define the main reasons and propose possible solutions of this problem within human resource management in machine construction companies. 展开更多
关键词 machine construction COMPETITIVENESS QUALIFICATIONS
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Expatriation as an Element of Diversity Management
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作者 Daniel H. Scheible 《Sociology Study》 2015年第5期347-353,共7页
The ongoing internationalization of companies goes hand in hand with an increase of international assignments. With it, knowledge is transferred and diverse teams emerge in the subsidiaries abroad. However, expatriati... The ongoing internationalization of companies goes hand in hand with an increase of international assignments. With it, knowledge is transferred and diverse teams emerge in the subsidiaries abroad. However, expatriation management and diversity management have been separated areas so far. Thus, the readiness to use expatriation as an integral element of an overall diversity strategy has been evaluated in an exploratory empirical study. For this purpose, semi-structured interviews have been conducted with both expatriates and HR (human resources) managers in six subsidiaries and the headquarters of an international mechanical engineering company. It was found that operative aspects of the expatriate management dominate the viewpoint of those involved. However, the findings also suggest that an implicit recognition of advantages that stem from the variety of individual employees exists. Willingness to systematically strengthen the exchange and learning process was detected. Based on these results, a new approach could be conceptualized and implemented. This provides various foci for further research. 展开更多
关键词 EXPATRIATION diversity management human resource management organizational learning
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