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AMESim是由法国Imagine公司推出的高性能建模、仿真和动态分析软件。以PDF(伪微分反馈)模块参数优化为例,介绍了运用AMESim实现电液位置伺服系统的仿真及优化设计方法。首先利用AMESim的超级元件功能封装PDF控制模块,利用AMESim的参数优化功能对PDF参数进行优化,对优化前后液压位置伺服系统进行仿真、比较,对基于PDF控制的液压系统参数发生变化的情况做了仿真。 相似文献
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针对某连续运输设备行走速度不够,设备行走回路实际流量比设计流量低的问题,采用理论分析、AMESim仿真和实验验证三种方法对其进行了研究。首先结合液压元件原理和现场测试结果,从理论上分析了出现故障的原因,得出解决流量不足故障的理论依据;然后利用AMESim仿真软件对电液双控负载敏感比例多路阀控系统进行建模仿真,验证理论解决方案的正确性;最后通过实验对分析结果进行验证。结果显示,在电液双控负载敏感比例多路阀系统中,较长的先导管路沿程压力损失是造成该系统流量故障的主要原因。数字仿真和试验结果皆表明,增大长管道管径减小压损,或增加先导油源使长管道入口压力增大来补偿先导长管路造成的压力损失,将有效改善行走系统流量不足的问题。 相似文献
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针对电液位置伺服系统的不确定性、非线性和常规PID控制的缺点,设计了具有在线PID参数调整的模糊自整定PID控制器,以减小电液位置伺服系统中参数摄动等引起的超调和振荡。利用AMESim与Matlab软件各自的优势,分别进行了液压系统建模、控制器设计。联合仿真结果表明,模糊自整定PID控制器使系统有较高的稳态精度、较快的动态响应,系统具有很好的适应性。 相似文献
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基于AMESim的阀控液压缸液压伺服系统仿真 总被引:2,自引:0,他引:2
AMESim是法国IMAGINE公司开发的高级工程系统仿真建摸环境,为机械、液压、控制等工程系统提供了一个较为完善的仿真环境.首先介绍了AMESim软件的功能和特点,并以阀控液压缸液压伺服系统为例,探讨了基于AMESim的液压伺服系统的模型建立、参数设置和仿真方法,得出了仿真结果,并对改变系统元件参数下的仿真结果进行了比较与分析. 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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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
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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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本文以某些积算和双笔记录仪产品为例说明由于仪表功能设计的不合理或选型不当,影响了仪表的正常使用,制造厂和用户应关注这类问题。 相似文献