共查询到20条相似文献，搜索用时 187 毫秒
1.
自动变速器的控制技术影响到变速器使用性能,本文介绍现代控制理论在自动变速器控制中的应用,如换档点控制,变矩器闭锁离合器控制、换档质量控制、适应性控制、模糊控制、容错控制等。现代控制技术的应用既提高汽车的行驶性能又改善换档品质,使自动变速器对于不同的驾驶条件和运行工况均具有较理想的运行性能和较强的适应能力。 相似文献
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胡志刚 《天津工程师范学院学报》2005,15(3):29-30,41
利用单片机控制发光二极管和光纤来模拟汽车自动变速器的油路、阀体及其故障现象,采用键盘和LED显示器进行人机交互,成功地模拟了自动变速器的核心技术--自动换档功能.该软件设计操作方便简单,使学生能够清晰地领会自动变速器的工作原理. 相似文献
3.
屈亚锋 《武汉工程职业技术学院学报》2018,(1)
通用AF40-6是一款多排串联复合式行星齿轮自动变速器,结构复杂,档位分析比较难,学生理解困难,因此,利用单、双行星齿轮机构特性方程式,结合不同运动方式的应用情况,通过分析各档位传动比大小的范围,研究出通用AF40-6自动变速器各档位最优化换档执行元件选择的方法,并且计算出各档位传动比,对其他研究自动变速器的学者有一定的参考价值。 相似文献
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赵忠宪 《兰州石化职业技术学院学报》2004,4(2):20-22
发动机和变速器的设计、使用及汽车最佳动力换档规律的确定须依据对汽车的动力性指标的分析。讨论了利用汽车的行驶特性图来分析汽车的动力性指标的方法。 相似文献
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在变速器开发性试验中,需要测量换档力、扭矩、转速及噪音等参数,以判断变速器性能好坏。文章结合生产实际,详细介绍了变速器试验中各种传感器的适用范围、使用方法,并分析了试验测试结果对变速器开发试验的意义。 相似文献
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《实验室研究与探索》2020,(6):60-65
基于某型大功率液力换档变速箱,在装载机实车平台上设计了大功率工程机械自动变速箱电控系统(TCU)的软硬件,开发了基于分模块层次的电控系统控制软件,制订了基于工况需求的轮式装载机两参数自动换档规律及控制策略,将设计的电控系统与整车集成后进行了整车验证试验。试验结果表明,所设计的电控系统软硬件可实现装载机自动变速的综合控制功能,换档品质得到了明显改善,提升了作业效率,减轻了驾驶员的操作强度,为进一步实现装载机自动变速电控系统的产业化提供了技术基础。 相似文献
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利用动力及负载变频电机真实模拟自动变速器的工况控制,实现了自动变速器的换挡规律切换。通过构建硬件下位机和软件上位机的控制与通信功能,设计了集"教、学、训、考、培"于一体的教学测控系统。测试结果表明,该教学测控系统真实还原自动变速器的换挡过程,实现了图形化界面的测控功能。 相似文献
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利用ADAMS软件,参照AL4自动变速器和直齿圆柱齿轮的运动规律,利用简化方法,建立AL4自动变速器传动模型。根据其真实的工作状态,通过添加约束、驱动、设定参数等,实现AL4自动变速器在不同档位下的运动状态仿真,可以真实地判定各档位的转动方向和速度大小,更加直观地了解AL4自动变速器的工作机理。 相似文献
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汽车自动变速器故障中因自动变速器油的问题引发的故障大约占到80％左右,其中,部分是由于自动变速器液面高度不正常而引起的,部分是由于自动变速器油变质或使用的自动变速器油不是既定牌号引起的,本文通过对油质状态进行认真仔细的研究分析,给出自动变速器油变质的原因,并进一步分析了油液变质后所能引起的故障。 相似文献
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《Chinese Education & Society》2013,46(3):33-36
In the republic of the democratic dictatorship of the workers and peasants, all programs for educational activities - whether in the realm of political education, or in ordinary technical education, or in the arts - should originate in class struggle; they should originate from the effort to attain victory for the democratic dictatorship of the workers and peasants, from the overthrow of the rule of the landlord and bourgeois classes, from the shift to socialist revolution, from the elimination of classes and the elimination of the system of men oppressing men; and from the struggle for a communist society. Therefore Soviet education should be communist education. 相似文献
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随着AutoCAD技术在施工单位的推广,AutoCAD已不再是单纯的绘图软件,将AutoCAD和Excel计算功能结合,为施工测量人员复核图纸和提取坐标提供一条新的方法和途径。 相似文献
14.
傅伟 《扬州职业大学学报》2000,4(2):14-17
AutoLISP语言在AutoCAD软件中具有一般高级语言所没有的强大图形功能,本在介绍AutoLISP 的应用基础上,指出了扩充参数化绘图程序的原则,分析了化工设备图中可建立图形程序库的零件,并以压力容器法兰为例介绍了利用AutoLISP建立图形程序的方法和参数化绘制。 相似文献
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以自动翻译为努力方向的机器翻译受人工智能理论和算法的局限,发展停滞不前。计算机辅助翻译把计算机辅助技术引入语言翻译,突破了内核翻译的瓶颈,为机器翻译提供了一条现实可行之路,是机器翻译的发展趋势。 相似文献
16.
Rats received three-trial series on a T-maze consisting of extended visually distinct left-black and right-striped side runways.
During the first phase of training, when allowed to select baited runways within these series, they predominantly alternated
their choices. During the second phase, rats received forced-choice serial pattern training of series consisting of two rewarded
(R) trials and one nonrewarded (N) trial in two fixed orders, RRN and RNR. In Experiment 1, the rats in the runway shift rule
group always received the second R trial when forced down a runway opposite that on the preceding trial in the series and
the N trial when forced down the same runway. The rats in the runway stay rule group always received the second R trial when
forced down the same runway and the N trial when forced down the opposite runway. In Experiment 2, each rat was conditionally
trained with both runway outcome rules as determined by the central alley lighting and the type of food in the side alleys.
The rats took longer to reduce their running speed on the N trial within each sequence under the runway stay rule than under
the runway shift rule. They also took longer to acquire serial pattern responding for the RNR than for the RRN series only
under the runway stay rule condition. When subsequently reexposed to series of free-choice trials on the final phase, rats
maintained spontaneous alternating choice patterns under the runway shift rule conditions but either seldom alternated their
choices (Experiment 1) or greatly reduced choice alternations (Experiment 2) under the runway stay rule condition. We discussed
these effects in terms of rats’ natural foraging strategies and as a factor that interacts with other within- and between-series
variables that affect serial pattern behavior. 相似文献
17.
南宋绍熙内禅钩沉 总被引：1，自引：0，他引：1
肖建新 《安徽师范大学学报(人文社会科学版)》2002,30(6):714-720
南宋光宗传位于宁宗的绍熙内禅,史书记载歧误之处甚多.通过有关史事实的钩沉考辨,绳谬补阙,复原绍熙内禅的完整历程,并揭示其前因后果. 相似文献
18.
Dimensional Strategies Dominate Perceptual Classification 总被引：3，自引：0，他引：3
Laura A. Thompson 《Child development》1994,65(6):1627-1645
The nature of perceptual classification was investigated in children ranging between 4 and 10 years, and in young adults. Triad classification task responses were categorized as consistent or inconsistent with several classification rules, including: overall-similarity, size-dimensional, brightness-dimensional, pure identity, and all combinations of a switch from one rule to another midway through the experiment. The rule with the highest proportion of responses consistent with it reflectd each person's best-fitting rule pattern. The higher this value, the higher the assumed consistency of rule usage. Data from the majority of individuals in every age group conformed best to one of the three dimensional rules. In addition, the consistency values for individuals' best-fitting rule became significantly higher as age increased. It is concluded that most children have a tendency to attend selectively to one stimulus dimension when making perceptual classification judgments. The developmental trend in perceptual classification does not appear to be a holistic-to-analytic shift; instead, it is a trend toward greater consistency in following a given classification rule. 相似文献
19.
在Auto CAD 2000的基础上，根据我国机械行业的设计规范和标准，利用Auto CAD的二次开发环境，探讨了构造一个高效的机械CAD绘图系统的方法和步骤。 相似文献
20.
文章介绍了 Auto CAD制图方式 ,并进一步说明了 Auto CAD制图的特点及在实践应用中的一些体会 相似文献