共查询到20条相似文献,搜索用时 250 毫秒
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斯这-斯太尔重型汽车是引进奥地利斯太尔汽车国产化的产品,其制动系统采用气压制动,气路用接头为卡套式连接.卡套式接头结构简单、连接可靠,但其直角接头要实现管路走向角度变化则结构较复杂,本文从卡套式直通接头入手对其结构进行了改进,以同时适用于直通接头和直角接头,要直则直,要弯则弯,且可随管路走向旋转任意角度. 相似文献
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电缆附件是指在电缆敷设完成之后的电缆终端和接头连接工作统称。在电缆施工中,往往会由于电缆长度不够需要将两根电缆的两端连接起来作为中间部位和连接稳定的基础,因此需要做中间接头。在电缆中间接头安装的时候需要剥出一定长度的线芯,以便分相与设备接线桩头连接,因此在连接过程中要采用终端头。本文阐述了电缆附件安装的一般规定和相关要求,提出相应的管理控制措施和技术应用方式。 相似文献
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本文首先介绍了110k V电缆模注型接头的设计原理及特点,再通过该类接头的试点应用与故障分析,结果表明,尽管运行半年后其中一个接头故障击穿,但该类接头的安装工艺水平已基本满足现场附件制作要求,具有一定的推广使用价值。 相似文献
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基于梅州一起10kV预制式冷缩T型接头击穿故障,对该接头进行逐步解体,通过分析找出了故障成因,并根据故障现象、故障机理分析结论和实践经验,提出了相应的安装和运行建议。 相似文献
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伴随着钢结构建筑的快速普及,高强螺栓凭借着自身方便快捷、抗震性能好、安装方便快捷、工期较短的优势使其应用越来越广泛。高强螺栓的使用减少了焊接工作量,避免了焊接接头脆性的弊端,确保了工程进度和质量。但是高强螺栓节点在制作与安装施工中存在一定的难度,如何在施工中提高高强螺栓的过孔率,保证连接接头施工质量变得尤为突出。 相似文献
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针对回转窑在使用过程中出现的窑体窜动问题,从回转窑的组成入手,分析窜动原因,提出通过托轮调整解决回转窑窑体窜动的方法和调整时的注意事项。 相似文献
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本文以水泥回转窑的控制为对象,采用模糊控制器来实现控制。阐述了控制器的设计思想,并成功应用于水泥回转窑的控制中,取得了理想的控制效果。 相似文献
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本文介绍了Matlab在数据拟合中的应用,阐述了曲线拟合的基本原理及多项式曲线拟合模型的matlab实现方法,并给出了曲线拟合的例子,实验结果表明用matlab进行拟合是可行和有效的。 相似文献
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Matlab在数据拟合中的应用 总被引:4,自引:0,他引:4
本文介绍了Matlab在数据拟合中的应用,阐述了曲线拟合的基本原理及多项式曲线拟合模型的Matlab实现方法,并给出了曲线拟合的例子,实验结果表明用Matlab进行拟合是可行和有效的。 相似文献
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A rotary variable admittance device and its application in vehicle seat suspension vibration control
Donghong Ning Shuaishuai Sun Jianqiang Yu Minyi Zheng Haiping Du Nong Zhang Weihua Li 《Journal of The Franklin Institute》2019,356(14):7873-7895
In this paper, a novel semi-active variable admittance (VA) concept is proposed, and a seat suspension prototype with a magnetorheological fluid damper based rotary VA device is designed, manufactured, and experimentally validated. The conventional inerter with a single flywheel has a constant inertance, which can effectively improve the suspension performance by being integrated into a mechanical network with springs and dampers. The proposed rotary VA device comprises a gear reducer, two flywheels and a variable damping (VD) device which is used to connect the two flywheels. With carefully designing, the rotary VA device is compacted and is similar with a VD device in size. The rotary VA device is installed in the centre of a seat suspension's scissors structure to form a VA seat suspension. According to the test results, the equivalent inertance of the seat suspension can vary from 11.3 Kg–76.6 Kg with a 3 Hz frequency and 5 mm amplitude sinusoidal movement by changing the current from 0 A–1 A. By analysing the system characteristics, a hybrid controller with two acceleration feedbacks is proposed. Thereafter, the seat suspension and controller are validated in experiments by comparing the performance with a conventional passive seat suspension. The random vibration test shows the excellent performance of the proposed seat suspension; the frequency weighted root mean square acceleration of the seat is reduced by 43.6%, which indicates a great improvement of the ride comfort. The VA device shows great prospect in the suspension application. 相似文献
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介绍了GPSRTK高程拟合的理论方法和数学模型,常规的方法是以最小二乘估计值为初值,但不宜发现和处理粗差。为了提高高程拟合精度,采用抗差估计理论在GPSRTK高程拟合的精度分析方法,通过选择综合抗差估计阶段的权函数,不断地迭代,直至权无限趋近于零。 相似文献
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Gisela Pujol-Vazquez Leonardo Acho Saleh Mobayen Amelia Nápoles Vega Pérez 《Journal of The Franklin Institute》2018,355(10):4077-4096
The main objective of this paper is to drive a rotary inverted pendulum by following a desired navigation instruction. This navigation is commanded by the user through a new electromagnetic device which is allowed to perturb the pendulum from its upright position. This apparatus consists of an electronic magnetic driving circuit to introduce commands and realized via two operated magnetic coils. So, the external programmed magnetic perturbation can be seen as external commandments. Therefore, the control problem statement is solved via a modified regulation control implementation, to maintain the pendulum on its upright position and giving free manipulation of the base of the rotary inverted pendulum. Hence, by using the corresponding H∞-linear matrix inequality technique, a static state controller is designed and tested experimentally so supporting our findings. 相似文献