共查询到20条相似文献,搜索用时 62 毫秒
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王蕊 《机电产品开发与创新》2011,24(4):179-180,187
针对《机械控制工程基础》的课程特点,分析了在教学中引入Matlab的必要性.通过具体实例说明Matlab在时域分析和频域分析的应用过程,并得出结论:《机械控制工程基础》教学中应用Matlab,有利于调动学生的学习积极性,培养学生分析和解决问题的能力,提高教学质量. 相似文献
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“机械控制工程基础”是高等学校机械工程类本科专业的一门专业必修核心课,主要阐述机械工程技术中广义系统的动力学问题.从工程教育认证角度下对《机械控制工程基础》课程教学过程进行分析,找出存在的问题,就课程内容、教学方法和考核方式进行综合改革,实践证明,通过改革提高了学生分析问题和解决工程实际问题的能力,满足毕业要求指标点达... 相似文献
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文章针对《控制工程基础》课程特点,分析了目前该课程在教学中存在的问题,提出了在传统教学模式上结合现代教学手段的一些改进措施,通过理论与实践的有机结合,大大提高了学生对机电控制系统的分析设计能力。 相似文献
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Matlab在《机械控制工程基础》课程教学中的应用探讨 总被引:1,自引:0,他引:1
扼要叙述了Matlab软件的发展及其应用现状;在教学实践的基础上,举实例说明Mmatlab在《控制工程基础》课程教学中从数学建模、时域与频域分析到根轨迹的应用;从多方面探讨了在教学过程中,如何更好地利用Matlab软件. 相似文献
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In a recent paper, the Ritz method with simple algebraic polynomials as trial functions was used to obtain an eigenvalue equation for the free vibration of a class of homogeneous solids with cavities. The method presented is here extended to the study of a class of non-homogeneous solids, in which each solid is composed of a number of isotropic layers with different material properties. The Cartesian coordinate system is used to describe the geometry of the solid which is modelled by means of a segment bounded by the yz, zx and xy orthogonal coordinate planes and by two curved surfaces which are defined by fairly general polynomial expressions in the coordinates x, y and z. The surface representing the interface between two material layers in the solid is also described by a polynomial expression in the coordinates x, y and z. In order to demonstrate the accuracy of the approach, natural frequencies are given for both a two- and three-layered spherical shell and for a homogeneous hollow cylinder, as computed using the present approach, and are compared with those obtained using an exact solution. Results are then given for a number of two- and three-layered cylinders and, to demonstrate the versatility of the approach, natural frequencies are given for a five-layered cantilevered beam with a central circular hole as well as for a number of composite solids of more general shape. 相似文献
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通过分析膨胀套在实际使用产生滑移受阻现象、卡死现象原因的实质,并在分析产生问题原因的基础上提出了改进措施即:增加导向机构。 相似文献
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设计了磨粉机快辊轴承座的加工工艺和具体的工装夹具.利用卧式加工中心加工磨粉机快辊轴承座,辅以能够高效快速夹紧的夹具,既可以保证加工精度,又能够提高加工效率. 相似文献
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一种涡旋压缩机径向随变机构的设计 总被引:1,自引:0,他引:1
详细介绍了运用随变原理设计的一种新型径向密封机构的结构特点,工作原理及主要参数的确定方法,该机构可补偿由于涡旋体加工精度不高而造成的功率损失,适用于涡旋压缩机的批量生产。 相似文献
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针对目前市场对工业设计人才的需求,本文论述了我校在工业设计教育方面的改革措施,着重介绍了我校工业设计教育在软件和硬件方面所进行的一系列的改革。 相似文献
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V. P. Dragunov E. G. Kostsov 《Optoelectronics, Instrumentation and Data Processing》2009,45(3):234-242
Specific features of operation of one- and two-capacitor microelectromechanical converters (MEMC) of energy of mechanical microscopic vibrations into electric energy with a modulated electrode-gap magnitude and with allowance for the mutual influence of electrical and elastic forces are analyzed, and the characteristics of these two devices are compared. The main factors restricting the increase in MEMC power are demonstrated to be the effects of “collapsing” and the condition of conservation of positive rigidity of the system. Expressions for estimating the limiting MEMC parameters are derived. The possibility of electrical energy generation in the presence of “real“ sources of wide-spectrum microscopic vibrations is considered. 相似文献