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MG400 900-WD型采煤机牵引部设计【7张CAD图纸和说明书】

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MG400 900-WD型采煤机牵引部设计【7张CAD图纸和说明书】 wd 采煤 牵引 设计 cad 图纸 以及 说明书 仿单
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摘  要


G400/900-WD型采煤机是一种多电机驱动,横向布置的交流电牵引采煤机。该机功率大,多电机横向布置,整机结构紧凑,采用交流变频调速系统,变频调速采用机载式。截割电机、牵引电机等主要元部件均可从采空区抽出,容易更换,方便维修。

牵引电机输出的转矩经三级圆柱齿轮和二级行星齿轮减速器减速后,由行星架输出,通过驱动轮与行走轮相啮合,再由行走轮与工作面刮板输送机上的齿轨啮合使采煤机来回行走,同时制动轴输出轴通过键与制动器相连,实现电牵引部的制动。

左右牵引部,中间电控箱的联结螺柱,定位销,摇臂与左右电牵引部铰接销轴四组,这些装置将采煤机各大部件联接成一个整体,起到紧固及连接的作用。牵引部与行走部做成一体,使机身整体尺寸紧凑,缩小了机身宽度。

G400/900-WD型采煤机,操作方便,可靠性高,事故率低,开机效率高,可满足高产高效工作面的需要。

关键词:采煤机;牵引部;行走部;行星齿轮








ABSTRACT


The G400/900-WD coal mining machine is more than one kind of motor-driven, crosswise arrangement alternating current hauling coal mining machine. This machine power is big, the multi-electrical machinery crosswise arrangement, the complete machine structure is compact, uses the exchange frequency conversion velocity modulation system, the frequency conversion velocity modulation uses aircraft-borne -like. Cuts the electrical machinery, the pulling motor and so on main part to be possible to extract from the worked-out section, easy to replace, facilitates the service.

The pulling motor outputs torque decelerates after the third-level cylindrical gears and the second-level planet gear reduction gear, by the planet carrier outputs, with walks lining on the feet and palms of buddha meshing through the driving gear, by walks again round and on working surface scraper conveyer's rack rail meshing causes the coal mining machine back and forth to walk, simultaneously the brake spindle output shaft is connected through the key and the brake, realizes the electricity hauling department brake.

About the hauling department, the middle electrically controlled box's joint stud, the positioning pin, the rocking shaft sells the axis four groups with about electricity hauling department hinge, these installments join coal mining machine various major assemblies a whole, plays the fastening and the connection role. The hauling department with walks to make a body, caused the fuselage overall size to be compact, reduced the fuselage width.

The G400/900-WD coal mining machine, the ease of operation, the reliability is high, the accident rate is low, the starting efficiency is high, may satisfy the high production highly effective working surface the need.

Key word: The coal mining machine; the hauling department; walks;Planet gear


目    录


1 概述 1

1.1采煤机的发展概况 1

1.2国际上电牵引采煤机的技术发展状况 1

1.3国内电牵引采煤机的发展状况 3

1.3.1. 20世纪70年代是我国综合机械化采煤起步阶段 3

1.3.2 .20世纪80年代是我国采煤机发展的兴旺时期 4

1.3.3 .20世纪90年代至今是我国电牵引采煤机发展的时代 5

1.4采煤机的发展趋势 7

1.5采煤机类型 7

1.6采煤机的组成 10

1.7电牵引采煤机的优点 12

2 牵引部的设计 14

2.1牵引机构传动系统 14

2.1.1主要技术参数 14

2.1.2电动机的选择 14

2.1.3传动比的分配 15

2.2牵引部传动计算 17

2.2.1各级传动转速、功率、转矩 17

2.3牵引部齿轮设计计算 18

2.3.1齿轮1和惰轮2的设计及强度效核 18

2.3.2齿轮3和惰轮4的设计及强度效核 24

2.3.3齿轮5和惰轮6的设计及强度效核 30

2.4牵引部行星机构的设计计算 35

2.4.1行星齿轮的计算 37

2.4.2行星轮啮合要素验算 49

3 轴的设计及校核 53

3.1 确定轴的最小直径 53

3.2轴的校核 56

3.3花键的强度校核 63

3.4轴承的校核 65

4采煤机的使用和维护 67

4.1采煤机的维护 67

4.2采煤机轴承的维护及漏油的防治 69

4.3煤矿机械传动齿轮失效的改进途径 71

5机械密封 78

参考文献 82

英文原文 83

中文译文 91

致谢 98

1概述

1.1采煤机的发展概况

机械化采煤开始于二十世纪40年代,是随着采煤机械的出现而开始的。40年代初期,英国、苏联相继生产了采煤机,德国生产了刨煤机,使工作面落煤、装煤实现了机械化。但当时的采煤机都是链式工作机构,能耗大、效率低,加上工作面输送机不能自移,所以限制了采煤机生产率的提高。

50年代初期,英国、德国相继生产出滚筒式采煤机、可弯曲刮板输送机和单体液压支柱,大大推进了采煤机械化技术的发展。由于当时采煤机上的滚筒是死滚筒,不能实现调高,因而限制了采煤机的适用范围,我们称这种固定滚筒采煤机为第一代采煤机。

60年代是世界综采技术的发展时期,第二代采煤机——单摇臂滚筒采煤机的出现,解决了采高调整问题,扩大了采煤机的适用范围,特别是1964年第三代采煤机——双摇臂滚筒采煤机的出现,进一步解决了工作面自开缺口的问题,再加上液压支架和可弯曲输送机的不断完善等等,把综采技术推向了一个新水平,并且在生产中显示了综采机械化采煤的优越性——高产、高效、安全和经济。

进入70年代,综采机械化得到了进一步的发展和提高,综采设备开始向大功率、高效率及完善性能和扩大使用范围等方向发展。1970年采煤机无链牵引系统的研制成功以及1976年出现的第四代采煤机——电牵引采煤机,大大改善了采煤机的性能,并扩大了它的使用范围。

80年代,德国、美国、英国都开发成功各种交、直流电牵引采煤机,同时把计算机控制系统用在采煤机上。并且开始重视系列化采煤机的开发工作,一种功率的采煤机可以派生出多种机型,主要元部件在不同功率的采煤机上都能通用,这样不仅扩大了工作面的适应范围,而且便于用户配件的管理。采煤机系列化是20世纪80年代采煤机发展中非常突出的特点。

至此,缓倾斜中厚煤层的综采机械化问题已经基本得到解决,专家开始对实现厚煤层、薄煤层、急倾斜及其它难采煤层开采的综采机械的研发,以适用不同的开采条件。






内容简介:
编 号 : ( ) 字 号本 科 生 毕 业 设 计题目: 姓名: 学号: 班级: 二八年六月采煤机牵引部设计毕业论文任务书学 院 : 专 业 年 级 : 学 生 姓 名 : 任 务 下 达 日 期 : 2008 年 3 月 16 日毕业论文日期:2008 年 3 月 16 日至 2008 年 6 月 10 日毕业论文题目:采煤机牵引部设计毕业论文专题题目:毕业论文主要内容和要求:主要参数:装机总功率:700-900KW 截割部功率 2(300-400)KW采高范围:2.2-3.5m 适应煤质硬度:f4煤层倾角:25 滚筒截深:800mm电机转速:1470r/min 牵引速度:0-15m/min要求:1、 结合采煤机总体方案的设计完成运输机、液压支架的选型配套布置图。2、 牵引部传动及结构总体设计。3、 主要部件、组件、零件图设计;1) 牵引部强力轮齿组件图设计;2) 牵引部壳体(铸件)设计;3) 传动齿轮、轴的零件加工图设计;4、 编写完成牵引部壳体加工工艺;5、 编写完成整机设计计算说明书、中英文翻译;院长签字: 指导教师签字:摘 要G400/900-WD 型采煤机是一种多电机驱动,横向布置的交流电牵引采煤机。该机功率大,多电机横向布置,整机结构紧凑,采用交流变频调速系统,变频调速采用机载式。截割电机、牵引电机等主要元部件均可从采空区抽出,容易更换,方便维修。牵引电机输出的转矩经三级圆柱齿轮和二级行星齿轮减速器减速后,由行星架输出,通过驱动轮与行走轮相啮合,再由行走轮与工作面刮板输送机上的齿轨啮合使采煤机来回行走,同时制动轴输出轴通过键与制动器相连,实现电牵引部的制动。左右牵引部,中间电控箱的联结螺柱,定位销,摇臂与左右电牵引部铰接销轴四组,这些装置将采煤机各大部件联接成一个整体,起到紧固及连接的作用。牵引部与行走部做成一体,使机身整体尺寸紧凑,缩小了机身宽度。G400/900-WD 型采煤机,操作方便,可靠性高,事故率低,开机效率高,可满足高产高效工作面的需要。关键词:采煤机;牵引部;行走部;行星齿轮ABSTRACTThe G400/900-WD coal mining machine is more than one kind of motor-driven, crosswise arrangement alternating current hauling coal mining machine. This machine power is big, the multi-electrical machinery crosswise arrangement, the complete machine structure is compact, uses the exchange frequency conversion velocity modulation system, the frequency conversion velocity modulation uses aircraft-borne -like. Cuts the electrical machinery, the pulling motor and so on main part to be possible to extract from the worked-out section, easy to replace, facilitates the service.The pulling motor outputs torque decelerates after the third-level cylindrical gears and the second-level planet gear reduction gear, by the planet carrier outputs, with walks lining on the feet and palms of buddha meshing through the driving gear, by walks again round and on working surface scraper conveyers rack rail meshing causes the coal mining machine back and forth to walk, simultaneously the brake spindle output shaft is connected through the key and the brake, realizes the electricity hauling department brake.About the hauling department, the middle electrically controlled boxs joint stud, the positioning pin, the rocking shaft sells the axis four groups with about electricity hauling department hinge, these installments join coal mining machine various major assemblies a whole, plays the fastening and the connection role. The hauling department with walks to make a body, caused the fuselage overall size to be compact, reduced the fuselage width.The G400/900-WD coal mining machine, the ease of operation, the reliability is high, the accident rate is low, the starting efficiency is high, may satisfy the high production highly effective working surface the need.Key word: The coal mining machine; the hauling department; walks; Planet gear目 录1 概述 11.1 采煤机的发展概况 11.2 国际上电牵引采煤机的技术发展状况 11.3 国内电牵引采煤机的发展状况 31.3.1. 20 世纪 70 年代是我国综合机械化采煤起步阶段 31.3.2 .20 世纪 80 年代是我国采煤机发展的兴旺时期 41.3.3 .20 世纪 90 年代至今是我国电牵引采煤机发展的时代 51.4 采煤机的发展趋势 71.5 采煤机类型 71.6 采煤机的组成 101.7 电牵引采煤机的优点 122 牵引部的设计 142.1 牵引机构传动系统 142.1.1 主要技术参数 142.1.2 电动机的选择 142.1.3 传动比的分配 152.2 牵引部传动计算 172.2.1 各级传动转速、功率、转矩 172.3 牵引部齿轮设计计算 182.3.1 齿轮 1 和惰轮 2 的设计及强度效核 182.3.2 齿轮 3 和惰轮 4 的设计及强度效核 242.3.3 齿轮 5 和惰轮 6 的设计及强度效核 302.4 牵引部行星机构的设计计算 352.4.1 行星齿轮的计算 372.4.2 行星轮啮合要素验算 493 轴的设计及校核 533.1 确定轴的最小直径 533.2 轴的校核 563.3 花键的强度校核 633.4 轴承的校核 654 采煤机的使用和维护 674.1 采煤机的维护 674.2 采煤机轴承的维护及漏油的防治 694.3 煤矿机械传动齿轮失效的改进途径 715 机械密封 78参考文献 .82英文原文 .83中文译文 .91致谢 .98第 0 页英文原文Switched Reluctance Motors Drive for theElectrical Traction in ShearerH. ChenCollege of Information and Electrical EngineeringChina University of Mining motor control; shearer; coal mine; electrical drive I. INTRODUCTIONThe underground surroundings of the coal mines are very execrable. One side, it is the moist, high dust and inflammable surroundings. On the other side, the space of roadway is limited since it is necessary to save the investment of exploiting coal mines so that it is difficult to maintain the equipments. In the modern coal mines, the automatization equipments could be used widely. The faults of the automatization equipments could affect the production and the benefit of the coal mines. The shearer is the mining equipment that coal could be cut from the coal wall. The traditional shearer was driven by the hydrostatic transmission system. The fault ratio of the hydrostatic transmission system is high since the fluid in hydrostatic transmission system could be polluted easily. The faults of the hydrostatic transmission system could affect the production and the benefit of the coal mines directly. The fault ratio of the motor drive system is lower than that of the hydrostatic transmission system, but it is difficult to cool the motor drive system in coal mines since the motor drive system should be installed within the flameproof enclosure for safety protection. The motor drive 第 1 页system is also one of the pivotal parts in the automatization equipments. The development of the novel types of the motor drive system had been attached importance to by the coal mines. The Switched Reluctance motor drive could become the main equipments for adjustable speed electrical drive system in coal mines 1, because it has the high operational reliability and the fault tolerant ability 2. The Switched Reluctance motor drive made up of the double-salient pole Switched Reluctance motor, the unipolar power converter and the controller is firm in the motor and in the power converter. There is no brush structure in the motor and no fault of ambipolar power converter in the power converter 34. The Switched Reluctance motor drive could be operated at the condition of lacked phases fault depended on the independence of each phase in the motor and the power converter 5. There is no winding in the rotor so that there is no copper loss in the loss and there is only little iron loss in the rotor. It is easy to cool the motor since it is not necessary to cool the rotor. The shearer driven by the Switched Reluctance motor drive had been developed. The paper presented the developed prototype. II. SYSTEM COMPONENTSThe developed Switched Reluctance motors drive for the electrical traction in shearer is a type of the double Switched Reluctance motors parallel drive system. The system is made up of two Switched Reluctance motors, a control box installed the power converter and the controller. The adopted two Switched Reluctance motors are all three-phase 12/8 structure Switched Reluctance motor, which were shown in Figure 1. The two Switched Reluctance motors were packing by the explosion-proof enclosure, respectively. The rated output power of one motor is 40 KW at the rotor speed 1155 r/min, and the adjustable speed range is from 100 r/min to 1500r/min. 第 2 页Figure 1.Photograph of the two three-phase 12/8 structure Switched Reluctance motorThe power converter consists of two three-phase asymmetric bridge power converter in parallel. The IGBTs were used as the main switches. Three-phase 380V AC power source was rectificated and supplied to the power converter. The main circuit of the power converter was shown in Figure 2第 3 页Figure 2. Main circuit of the power converter. In the controller, there were the rotor position detection circuit, the commutation circuit, the current and voltage protection circuit, the main switches gate driver circuit and the digital controller for rotor speed closed-loop and balancing the distribution of the loads. III. CONTROL STRATEGYThe two Switched Reluctance motor could all drive the shearer by the transmission outfit in the same traction guide way so that the rotor speed of the two Switched Reluctance motors could be synchronized.The closed-loop rotor speed control of the double Switched Reluctance motors parallel drive system could be implemented by PI algorithm. In the Switched Reluctance motor 1, the triggered signals of the main switches in the power converter are modulated by PWM signal, the comparison of the given rotor speed and the practical rotor speed are made and the duty ratio of PWM signal are regulated as follows, where, is the given rotor speed, is the practical rotor speed, is the difference of the rotor speed, is the increment of the duty ratio of PWM signal of the Switched Reluctance motor 1 at k time, is the integral coefficient, is the proportion coefficient, ek is the difference of the rotor speed at k time, ek-1 is the difference of the rotor speed at k-1 time, D1(k) is the duty ratio of PWM signal of the Switched Reluctance motor 1 at k time, and D1(k-1) is the duty ratio of PWM signal of the Switched Reluctance motor 1 at k-1 time. The output power of the Switched Reluctance motor drive system is approximately in proportion to the average DC supplied current of the power converter as follows, where, P2 is the output power of the Switched Reluctance motor drive system, Iin is the average DC supplied current of the power converter.In the Switched Reluctance motor 2, the triggered signals of the main switches in the power converter are also modulated by PWM signal. The balancing the distribution of the loads between the two Switched Reluctance 第 4 页motors could be implemented by fuzzy logic algorithm. In the fuzzy logic regulator, there are two input control parameters, one is the deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors, and the other is the variation of the deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors. The output control parameter is the increment of the duty ratio of the PWM signal of the Switched Reluctance motor 2. The block diagram of the double Switched Reluctance motors parallel drive system for the electrical traction in shearer was shown in Figure 3. Figure 3. Block diagram of the double Switched Reluctance motors parallel drive system for the electrical traction in shearerThe deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors at the moment of ti is where, Iin1 is the practical average DC supplied current of the power converter in the Switched Reluctance motor 1 at the moment of ti, Iin2 is the practical average DC supplied current of the power converter in the Switched Reluctance motor 2 at the moment of ti. The variation of the deviation of the average DC supplied current of the 第 5 页power converter between the two Switched Reluctance motors at the moment of ti is where, ei-1 is the deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors at the moment of ti-1. The duty ratio of the PWM signal of the Switched Reluctance motor 2 at the moment of ti is where, D2(i) is the increment of the duty ratio of the PWM signal of the Switched Reluctance motor 2 at the moment of ti and D2(i-1) is the duty ratio of the PWM signal of the Switched Reluctance motor 2 at the moment of ti-1. The fuzzy logic algorithm could be expressed as follows, where, E is the fuzzy set of the deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors, EC is the fuzzy set of the variation of the deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors, and U is the fuzzy set of the increment of the duty ratio of the PWM signal of the Switched Reluctance motor 2. The continuous deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors could be changed into the discrete amount at the interval -5, +5, based on the equations as follows, The continuous variation of the deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors could also be changed into the discrete amount at the interval -5, +5, based on the equations as follows, The discrete increment of the duty ratio of PWM signal of the Switched Reluctance motor 2 at the interval -5, +5 could be changed into the continuous 第 6 页amount at the interval -1.0%, +1.0%, based on the equations as follows, There is a decision forms of the fuzzy logic algorithm based on the above principles, which was stored in the programme storage cell of the controller. While the difference of the distribution of the loads between the two Switched Reluctance motors could be got, the duty ratio of PWM signal of the Switched Reluctance motor 2 will be regulated based on the decision forms of the fuzzy logic algorithm and the distribution of the loads between the two Switched Reluctance motors could be balanced. IV. TESTED RESULTSThe developed double Switched Reluctance motors parallel drive system prototype had been tested experimentally. Table I gives the tests results, where is the relative deviation of the average DC supplied current of the power converter in the Switched Reluctance motor 1, is the relative deviation of the average DC2 supplied current of the power converter in the Switched Reluctance motor 2, and, TABLE I.TESTS RESULTS OF PROTOTYPE第 7 页It is shown that the relative deviation of the average DC supplied current of the power converter in the Switched Reluctance motor 1 and in the Switched Reluctance motor 2 is within 10% . V. CONCLUSIONThe paper presented the double Switched Reluctance motors parallel drive system for the electrical traction in shearer. The novel type of the shearer in coal mines driven by the Switched Reluctance motors drive system contributes to reduce the fault ratio of the shearer, enhance the operational reliability of the shearer and increase the benefit of the coal mines directly. The drive type of the double Switched Reluctance motors parallel drive system could also contribute to enhance the operational reliability compared with the drive type of the single Switched Reluctance motor drive system. REFERENCES 1 H. Chen, G. Xie, “A Switched Reluctance Motor Drive System for Storage Battery Electric Vehicle in Coal Mine,” Proceedings of the 5th IFAC Symposium on Low Cost Automation, pp.95-99, Sept. 1998. 2 H. Chen, X. Meng, F. Xiao, T. Su, G. Xie, “Fault tolerant control for switched reluctance motor drive,” Proceedings of the 28 Annual Conference of the IEEE Industrial Electronics Society, pp.1050-1054, Nov. 2002. 3 R. M. Davis, W. F. Ray, R. J. Blake, “Inverter drive for switched reluctance motor:circuit and component ratings,” IEE Proc. B, vol.128, no.3, pp. 126-136, Sept. 1981. 4 D. Liu, et al., Switched Reluctance Motor Drive. Beijing: Mechanical Industry Press, 1994. 5 H. Chen, J. Jiang, C. Zhang, G. Xie, “Analysis of the four-phase switched reluctance motor drive under the lacking one phase fault condition,” Proceedings of IEEE 5th Asia-Pacific Conference on Circuit and Systems, pp.304-308, Dec. 2000. 中文译文电牵引采煤机的开关磁阻电动机摘要:本章介绍了电牵引采煤机双重开关磁阻电动机的并联驱动系统。该第 8 页系统由开关磁阻电动机,功率变换器电路和控制器组成。给出了由通过采用比例积分算法的调节转子速度的闭环回路和模糊逻辑算法实现的负荷的均衡分布组成的控制策略。介绍了实验结果。开关磁阻电动机 1 和开关磁阻电动机 2 的功率变换器的平均直流的相对误差为 。0%关键词:开关磁阻;电动控制;采煤机;煤矿;电传动.介绍煤矿的地下环境是非常恶劣的。一方面由于它是潮湿的,高粉尘的,和易燃的环境。另一方面,为了节约开采成本,巷道空间是有限,以至于设备很难维护。自动化设备在现代化煤矿已经得到广泛应用。自动化设备的故障会直接影响到煤矿的产量和效益。采煤机是采煤的主要矿山设备。传统的滚筒采煤机是通过液压传动系统传动的。液压传动系统的故障率很高,因为液压传动系统的液体很容易受环境污染。液压传动系统的故障直接影响到煤矿的产量和效率。电传动系统比液压传动系统的故障率低。但是,矿井中电机传动系统的散热性差,是因为为了煤矿安全,电机传动系统被封装在防爆的外壳内。电机传动系统是自动化设备的重要组成部分。电机传动系统的小说类型的发展对煤矿很重要。开关磁阻电动机传动是煤矿调速传动系统的主要设备,由于它的高工作可靠性和高容错能力。由双极点开关磁阻电动机,单级功率变换器和控制器组成的开关磁阻电动机传动是电动机和功率变换器的核心。电动机没有毛刷,功率变换器没有双极功率变换器的故障。开关磁阻电动机传动可以在缺相的情况下运行,它是依靠电动机和功率变换器相位独立性来实现的。转子上没有绕组,以至于转子上没有铜损和很小的铁损。因为不需要冷却转子,所以很容易冷却电动机。由开关磁阻电动机传动的采煤机正在不断发展。本章介绍了发展的样机。系统组成电牵引采煤机的开关磁阻电动机传动是一个双重开关磁阻电动机并联传动系统。这个系统是由两个开关磁阻电动机,一个控制箱,这个控制箱是安装在功率变换器和控制器上。采用的开关磁阻电动机是三相 12/8 结构的开关磁阻电动机,如图一所示。双重开关磁阻电动机分别包装在防爆外壳内。电动机的额定功率是 40KW,转速是 1155r/min,调速范围是100r/min1500r/min。第 9 页图一:三相 12/8 结构的开关磁阻电动机功率变换器是由两个三相不对称桥式变换器并列组成。IGBTs 是电路的主要开关元件。经整流后三相交流 380V 电源提供给功率变换器。功率变换器的主要电路如图二所示。图二:功率变换器的主要电路控制器由转子位置检测电路,整流电路,电流和电压保护电路,主要第 10 页开关的门极驱动电路和闭环调速数字控制器和负荷均衡分配组成。.控制方法采用同一个牵引方法,双重开关磁阻电动机通过传送设备用来驱动采煤机,来确保双重开关磁阻电动机的转子速度同步运行。并联驱动的双重开关磁阻电动机的闭环转子调速回路可以通过比例积分算法来实现。在开关磁阻电动机 1 中,功率变换器主要开关的触发信号是通过 PWM 信号调制的。比较给定的转子速度和实际的转子速度, PWM的占空比调节如下:其中, 是给定的转子速度, 是实际的转子速度, 是转子速度的差。 在 k 时刻内,开关磁阻电动机 1PWM 信号占空比的增量。 是积分系数, 比例系数, 转子速度在 K 时间内的差。 转子速度在K-1 时间内的差, 在 k 时刻内,开关磁阻电动机 1PWM 信号占空比,在 k-1 时刻内,开关磁阻电动机 1PWM 信号占空比。开关磁阻电动机传动系统的输出功率和功率变换器的电流成正比,如下所示:其中, 是开关磁阻电动机传动系统的输出功率, 功率变换器的平均直流电流。在开关磁阻电动机 2 中,功率变换器主要开关的触发信号是通过 PWM信号调制的。双重开关磁阻电动机之间的负荷均衡分布是通过模糊逻辑算法来实现的。在模糊逻辑调节器中有两个输入控制参数,一个是双重开关磁阻电动机之间的功率变换器的平均电流的偏差,另一个是双重开关磁阻电动机之间的功率变换器的平均直流电流的偏差的变化。输出控制参数是开关磁阻电动机 2 PWM 信号占空比的增量。电牵引采煤机双重开关磁阻电动机并列传动系统的方框图见图三所示。第 11 页图三: 电牵引采煤机并列传动系统的方框图功率变换器平均直流电流在双重开关磁阻电动机之间的偏差在 时刻为:其中, 在 时刻,功率变换器在开关
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本文标题:MG400 900-WD型采煤机牵引部设计【7张CAD图纸和说明书】
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