发布时间：
Introduction 介绍The precipitation and growth of aluminum nitride in low carbon Al-killed steel is one of the fundamental metallurgical processes that affect the final microstructure and properties (Ref 1) 氮化铝的析出和生长是低碳铝镇静钢最基本的冶金过程，它影响最终的金相组织和性能。The microstructure of steel evolves during hot rolling and cooling 热轧及冷却过程中钢的金相组织的演变。The various important factors, which affect the microstructure of the steel, are dissolution of AlN during heating and soaking, strain-induced precipitation of AlN during hot rolling, interpass recrystallization, austenite grain coarsening, finish rolling temperature (FRT), and cooling of the 影响钢金相组织的各种重要因素是：加热及均热过程中氮化铝的溶解、氮化铝在热轧过程中的应变诱导析出、层间再结晶、奥氏体晶粒粗化、扎制结束温度和钢带的冷却。 The evolution of grain size has been shown (Ref 2) to be different in low-carbon steel than that of other 低碳钢晶粒大小的演变与其它钢不同。 Thin slab casting and rolling (TSCR) of low-carbon steel has some distinguished characteristics, such as finer 连铸连轧低碳铝镇静钢拥有卓越的性能，例如出色的金相组织。 Much faster cooling rate and rapid solidification (Ref 3) in association with liquid core reduction result in finer grains in thin slabs as compared to conventional thick 与传统的厚板相比，薄板冷却快速、凝固快速和液核少。 This initial austenite grain size of slab plays an important role for controlling the final microstructure of the 这个初始奥氏体晶粒尺寸对最终钢带的金相组织控制有重要作用。 During casting, some aluminum nitrides also precipitate in thin slabs before entry into the tunnel furnace and may not dissolve during heating and soaking (Ref 4) at 1150°C for about 22 在铸造期间，有一些氮化铝在进入隧道炉之前在薄板里析出，析出的氧化铝在加热及均热（1150°C ，22 分钟）期间可能不会分解。 These fine precipitates restrain the growth of recrystallized austenite grains, which significantly affect the final 这些细小的析出相抑制了再结晶奥氏体晶粒的增长，从而影响了最终金相组织。Further, during hot rolling process some amount of fine AlN precipitates at different stages because of strain and decrease in 而且在热轧过程期间的应变及降温也会使氮化铝析出。 These precipitates inhibit austenite grain growth by pinning grain boundaries leading to refining of austenite and hence ferrite 这些析出的氮化铝抑通过限定边界来制奥氏体的增长，从而细化奥氏体晶粒和和铁素体晶粒。
去国外的大学教授主页上找吧，一般他们都会公布自己写的论文。这上面都一些机械控制的论文，不知道是不是符合你的要求 上面那个连接随便点一个进去就是一篇论文。。。 这就是论文了 这是第二篇
这里有很多的,你可以找下有没有?我找了好长时间才找到的哦中文免费论文地址集锦 一、 综合类 1、蓝之韵论文 门类较全。 2、学生大论文中心 3、蜂朝无忧论文网 门类很全。 4、论文下载中心 门类很全。 5、论文帝国 二、 教育类 1、教研论文交流中心 以中小学教育为主，基础教育、英语教学文章居多。 2、教育教学论文网 以教育论文为主，包含：语文论文 美术论文 物理论文 化学论文 英语论文 历史论文 德育论文 教学论文 数学论文 音乐论文 生物论文 自然论文 体育论文 地理论文 摄影论文 劳动技术 农村教育 毕业论文 素质论文 医学论文 电子电器学 思维科学 计算机论文 活动课教学 书法篆刻论文 创新教育研究 心理健康教育 西部教育论文 信息技术论文 3、教育论文 -/asp 4、中国园丁网论文大观 5、北大附小学校教师的文章： 三、 专业类 1、优秀论文杂志 以科技类为主。 2、论文资料网 以财经经济管理类为主。 3、法律图书馆 -/ 文如其名。 4、法学论文资料库 -/lw/ 文如其名。 5、中国总经理网论文集 6、mba职业经理人论坛 7、中国农业在线-农业论文 8、体育论文 9、财经学位论文下载中心 10、公开发表论文_深圳证券交易所 11、中国路桥资讯网论文资料中心 12、论文商务中心 13、法律帝国： 四、 论文写作教学类 1、学术论文 其实是学术论文的写作网站。 五、 博硕士论文 1、论文统计 实际上就是万方的论文统计。 2、台湾博硕士论文咨讯网 3、北京大学学位论文样本收藏 4、学位论文 （清华大学） ] 中国科技论文在线 论文中国 : 新浪论文网分类:_dir/jy/lw/ 中国论文联盟: 大学生论文库 论文资料网: 论文下载中心: 毕业论文网: 学位论文: 无忧论文网: 北京语言文化大学论文库:
Overrunning clutch of 3d measurement simulation and structure design With the rapid development of mechanical engineering industry, various types of machinery for overrunning clutch requirement also enhanced gradually, higher load, the more stable transmission has gradually become the development trend of overrunning The graduation design mainly USES the reverse engineering thinking, and mechanical or related courses are acquisition of knowledge as the basis, using three-dimensional copy several machine test tools and means for the existing overrunning clutch measuring This paper introduces the use of 3d copy number Imageware measured wedge of machine design analysis and fitting, according to the fitting results using SolidWorks software for 3d modeling and make 2d drawings of SolidWorks software is built, the 3d model for dynamic simulation and analysis, finally get its 3d model and design drawings, and the dynamic simulation of overrunning clutch process and ！
The 3D measurement that outstrips a cluth imitates really and structure designThe shape that changes with each passing day along with the mechanical engineering craft, various machineries also for outstrip the request of cluth to gradually raise, higher burden, more the hard drive has already gradually become the trend that outstrips a cluth This graduation designs thought of adopting the contrary engineering mainly, with machinery related course the knowledge of the acquisition for basis, make use of 3D copy to count machine test tool and way vs on hand of outstrip the progress measurement of cluth This text particularly introduced to make use of Imageware vs 3D copy to count machine of the measurement receives of wedge mass progress design analysis with draw up to match, according to drawing up to match make use of SolidWorks software to carry on 3D model and creation two dimensions design chart as a result, the 3D pattern progress dynamic state creating vs the SolidWorks software imitates true with analysis, finally receive its 3D pattern and design chart paper, and imitate true process and data towards outstripping a cluth dynamic
Overrunning clutch of 3d measurement simulation and structure designWith the rapid development of mechanical engineering industry, various types of machinery for overrunning clutch requirement also enhanced gradually, higher load, the more stable transmission has gradually become the development trend of overrunning The graduation design mainly USES the reverse engineering thinking, and mechanical or related courses are acquisition of knowledge as the basis, using three-dimensional copy several machine test tools and means for the existing overrunning clutch measuring This paper introduces the use of 3d copy number Imageware measured wedge of machine design analysis and fitting, according to the fitting results using SolidWorks software for 3d modeling and make 2d drawings of SolidWorks software is built, the 3d model for dynamic simulation and analysis, finally get its 3d model and design drawings, and the dynamic simulation of overrunning clutch process and
我这里有。没牢固关系的根本投都投不了。
机械工程学报就是外国的。
大田作物研究，
这里有很多的,你可以找下有没有?我找了好长时间才找到的哦中文免费论文地址集锦 一、 综合类 1、蓝之韵论文 门类较全。 2、学生大论文中心 3、蜂朝无忧论文网 门类很全。 4、论文下载中心 门类很全。 5、论文帝国 二、 教育类 1、教研论文交流中心 以中小学教育为主，基础教育、英语教学文章居多。 2、教育教学论文网 以教育论文为主，包含：语文论文 美术论文 物理论文 化学论文 英语论文 历史论文 德育论文 教学论文 数学论文 音乐论文 生物论文 自然论文 体育论文 地理论文 摄影论文 劳动技术 农村教育 毕业论文 素质论文 医学论文 电子电器学 思维科学 计算机论文 活动课教学 书法篆刻论文 创新教育研究 心理健康教育 西部教育论文 信息技术论文 3、教育论文 -/asp 4、中国园丁网论文大观 5、北大附小学校教师的文章： 三、 专业类 1、优秀论文杂志 以科技类为主。 2、论文资料网 以财经经济管理类为主。 3、法律图书馆 -/ 文如其名。 4、法学论文资料库 -/lw/ 文如其名。 5、中国总经理网论文集 6、mba职业经理人论坛 7、中国农业在线-农业论文 8、体育论文 9、财经学位论文下载中心 10、公开发表论文_深圳证券交易所 11、中国路桥资讯网论文资料中心 12、论文商务中心 13、法律帝国： 四、 论文写作教学类 1、学术论文 其实是学术论文的写作网站。 五、 博硕士论文 1、论文统计 实际上就是万方的论文统计。 2、台湾博硕士论文咨讯网 3、北京大学学位论文样本收藏 4、学位论文 （清华大学） ] 中国科技论文在线 论文中国 : 新浪论文网分类:_dir/jy/lw/ 中国论文联盟: 大学生论文库 论文资料网: 论文下载中心: 毕业论文网: 学位论文: 无忧论文网: 北京语言文化大学论文库:
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一篇机械英语论文 是关于 高速伺服的精度跟踪控制器设计 的 希望有份合理通顺并准确的翻译 如翻译得好还有追加分数 应付的Common技术结构共鸣有是塑造，控制信号的前馈弹道命令的prefiltering命令输入和山谷filtering。 在这些方法，振动衰减根据被塑造的动力学。 然而，作为machine’s configuration功能，频率和阻止结构方式，以及等效惯性特征，也许随着时间的推移变化并且。 这些问题通过获取预定和鲁棒控制器设计被论及了。干扰例如非线性摩擦可以塑造和补偿与在前馈的合理的严紧，缓和象限小故障在行动逆转。 扭矩波纹，作为马达位置和扭矩命令功能和补偿在控制器，导致不精确的扭矩交付，能也被塑造。 干扰适应战略可能部分地补尝剩余的干扰，不可能通过使用模型被预言。 干扰适应也提供强壮反对推进参量变异，察觉并且取消等值在适应带宽之内干扰。
摘要 以往的研究表明，一个焚化炉重金属排放的有效控制方法是使用固体吸附剂来捕捉物理气相沉积和化学吸附金属。然而，关于退休吸附剂吸附重金属可能会造成二次污染，如果他们没有得到充分的治疗。本研究的主要目的是增加热治疗中的四种重金属吸附剂对退休（铜，铅，铬，镉）的稳定。在稳定的基础是毒性特性溶出程序（TCLP）测试。评估的参数包括：（1）不同温度（900，1100和1300℃）和（2）各种加热时间（20，40和60分钟）。结果表明，大多数的浸出率增加为四有毒重金属温度降低。热处理时间不规律影响重金属的稳定，影响稍微当温度在1300 ° C的控制
The multi-motor driveDescription:The present invention concerns a drive for an escalator, which drives the stair belt and is arranged on one or both sides of the escalator at the upper and/or the lower end thereof, wherein the drive comprises a main drive wheel and at least one motor with gear and brake BACKGROUND OF THE INVENTION Different dispositions and constructional principles are known for escalator Since the drive must be designed for the maximally occurring load, a relatively large and strongly dimensioned motor with a corresponding gear is Poor efficiency at the mostly prevailing partial load and the large installation volume in the case of limited space availability within an escalator construction are disadvantages of such a These disadvantages are present to a lesser degree or not at all with multi-motor Such a drive for escalators and walkways, which comprises two individual drives or two twin drives, the output gearwheels of which drive the stair chain or the plate chain and, by way of an additional gear, the handrail, is known from DE 35 26 Such a construction is executed in different variants and correspondingly comprises a number of different gears and gear housings for the stair chain drive or the plate chain Furthermore, the individual drives are equipped with planetary gears, which causes relatively high The object of the present invention is to create an improved multi-motor drive for escalators, which can be implemented at favorable costs, which may be built up in a modular manner, and which covers a usual performance BRIEF DESCRIPTION OF THE INVENTION The drive according to the present invention distinguishes itself by several constructionally identical drive units being mountable distributed at the circumference of a main drive wheel, whereby the main drive wheel or its toothing need be dimensioned only for loading by a single drive The main drive wheel itself thus can have a smaller width, which is of great advantage for the accommodation of the drive parts in the case of an The drive units, in a number corresponding with power requirements, may be flange-mounted to a main gear housing identical for all performance This simplifies the production process for the entire constructional series, reduces the inventory and facilitates maintenance and The drive units are provided with torque transmitters and/or rotational speed transmitters for recognition of their mechanical Each of the drive units can furthermore be provided with a clutch which makes a selectable switching-in or switching-out of a drive unit The drive further comprises a frequency-setting device which is common to all drive units and by means of which different speeds can be set and which also serves as a starting A control and regulating unit produces corresponding control and regulating commands by the processing of incoming The control and regulating unit causes the switching-in and switching-out of individual drive units on the basis of actual load data from the torque transmitters, which helps to improve the electrical and mechanical efficiency and thus also reduces the energy The use of polyphase alternating current squirrel-cage motors of variable frequency and their associated control has the advantage that high torques can be produced at low rotational BRIEF DESCRIPTION OF THE DRAWINGS The invention is explained more closely in the following with the aid of an illustrative example of an embodiment thereof and is illustrated in the accompanying drawings, wherein: FIG 1 shows an escalator with a drive according to the invention at the upper end of the escalator; FIG 2 shows the drive with drive units flange-mounted on a main gear transversely to the direction of travel of the escalator; FIG 3 shows the drive with drive units flange-mounted on a main gear longitudinally of the direction of travel of the escalator; FIG 4 shows a three-dimensional illustration of the drive arrangement according to FIG 2; FIG 5 shows a three-dimensional illustration of the drive arrangement according to FIG 3; and FIG 6 shows a block schematic diagram and functional diagram of the drive with all associated DETAILED DESCRIPTION OF THE INVENTION FIG 1 shows an escalator 1 with an upper end 2, below which drive units denoted by 7 and a part of a stair chain 3 are FIG 2 shows the details of a drive, which is installed within a carrying structure 9 at the upper end 2 of the escalator Three identically constructed drive units 7 drive a toothed main drive wheel 6 by way of an output gearwheel 6 and an intermediate gearwheel 21, and are arranged and distributed about the circumference of the main drive wheel The main drive wheel 6, together with a stair chain wheel 5, are fastened on the main shaft 4 of the The drive units 7 are firmly connected to a main gear housing 8 at three planar flange-connecting openings 24 formed for this When less than three drive units 7 are needed, the unused flange-connecting opening 24 may be closed by a cover and the associated intermediate gearwheel 21 is not With this construction, the same main gear housing 8 can always be used for one, two or three needed drive units The axles of the drive units 7 are arranged transversely to the direction of movement of the escalator 1, which yields the advantage of a short machine As example of a variant, FIG 3 shows an arrangement of the drive units 7 parallel to the direction of movement of the escalator In this manner of arrangement, the drive units 7 additionally comprise a bevel gear Motor 1, clutch 2, brake 4, flywheel 5 and the output gearwheel 6, which are otherwise constructionally identical with and incorporated in the drive units 7 of FIG 2, are present for each drive unit The main gear housing 8 is likewise always the same for one, two or three drive units 7 and unused flange-connecting openings 24 can likewise be covered by a FIG 4 is a spatial illustration of the drive according to FIG 2 within the carrying structure 9 of the escalator Two stair elements 22 are illustrated in addition to the elements shown in the preceding FIG 5 is a similar spatial illustration of the drive according to FIG 3 within the carrying structure 9 of escalator The two stair elements 22 are likewise additionally The function and operation of the multi-motor drive according to the invention is to be explained more closely in the following by reference to FIG The current supply of the drive takes place as usual from local three-phase current mains 13 with phases R, S and T which are led to a main switch Following thereon, the entire drive is connected through a main relay or several relays There then follows a frequency-setting device 16, which by way of a relay control 23 with the relays S1, S2 to Sn feeds the motors 1 (M1, M2 to Mn) of the drive modules 7 at a variable frequency current and direction of rotation as provided by the frequency-setting device The motors M1, M2 to Mn are, as already shown and described in the preceding, operatively connected with the main drive wheel 6 by way of gears 3 and output gearwheels 6 and intermediate gearwheels 21, which are not further illustrated Torque transmitters 20 (L1, L2 to Ln) for the purpose of the measurement of the actual mechanical loading of the motors M1, M2 to Mn are installed at a suitable place in the transmission between the motors M1, M2 to Mn as known in the The main gear wheel 6 drives a speed transmitter 19 by way of an appropriate known transmission, which similarly is not more closely A control and regulating unit 10 contains microprocessor and relay control components, as well as signal and data inputs and First input data line 1 supplies speed values from the speed transmitter 19, which are fed as actual values to an internal regulating The second group of input data lines 2 provide measurement values from the torque transmitters 20 and, through appropriate processing, cause the switching-in and switching-out of individual drive modules A third group of input data lines 3 supplies data from transmitters 11, which essentially concern control safety contacts and mode of operation A first group of output data lines 1 leads to the relays 15 and to the frequency-setting device A second group of output data lines 2 contain control signals for the relay control 23, and the third group of output data lines 3 provides the data to control optical signals and illumination The multi-motor drive according to the invention functions as following: During starting-up of the escalator 1, the relay 15 for the drive is switched on, the frequency-setting device 16 is run up and at least one drive module 7 is switched on by way of the relay control 23 by the control and regulating unit 10 according to the choice of direction and a start-up On reaching the target speed, the drive regulation in the control and regulating unit 10 holds the speed of travel of the escalator 1 constant within close limits independently of the During the now following operation of the escalator 1, the input data lines 2 from the torque transmitters 20 supply information about the mechanical loading of the switched-in drive modules 7 (motors M1, M2 to Mn) In the case of low or no loading by transported persons, the drive power of the first motor M1 may suffice, and the further motors M2 to Mn remain switched If a full loading with a tendency to lasting overload is signalled by the torque transmitter L1, the next motor M2 is switched on after a defined The signals from the two torque transmitters L1 and L2 are now monitored in the control and regulating unit 10 and a further, not illustrated motor M3 may be switched in according to analog criteria when the load limit values of the motors M1 and M2 are The third motor, denoted by Mn in the illustration, is to indicate that, in principle, a greater number of drive modules 7 can be For practical and economic reasons, however, the number of drive modules 7 will probably remain restricted to three or at most The procedure is reversed when the mechanical loading The no longer needed motors 1 are then switched off in the sequence beginning with the motor Mn switched on If a uniform wear of the drive modules 7 is desired, this can be taken into consideration by way of an additional measurement of the switched-on times of the individual drive modules 7 and the individual drive modules 7 can thus be switched on and off selectably and not according to an always identical As already mentioned, the number of the drive modules 7 is not limited to the illustrated three Drive modules 7 produced in large quantities can be very favorable in price, so that it could be feasible to provide a greater number, for example 4 to 6, drive modules With appropriately adapted control programs in the control and regulating unit 10, the greater amount of data resulting therefrom can be processed without The use of direct current motors for the drive modules 7 is also possible in principle with appropriately-adapted control and regulating techniques as known in the Alternating current motors with squirrel cage armatures are preferably used because of their simple mode of construction and ease of Moreover, efficient and likewise cheap frequency-setting devices or frequency converters are Normal spur gearwheels, by means of which an optimum mechanical efficiency is achieved, may be used for the drive arrangement according to FIG Cone wheel gears, by means of which a practically equal efficiency is achieved by comparison with spur gearwheels, are advantageously used as bevel gears 3 for the drive arrangement according to FIG The main gear housing 8 can be so constructed that both drive arrangements, those according to FIG 2 as well as those according to FIG 3, can be The main drive housing 8 then correspondingly has twice as many flange-connecting openings The intermediate gearwheels 21 can be the same at the same position for both drive The drive arrangement according to the invention can also be used for other kinds of conveying equipment, for example for walkways and mercalators in horizontal and oblique