-
公开(公告)号：US5349275A
公开(公告)日：1994-09-20
申请号：US126677
申请日：1993-09-24
申请人： Rolf Muller
发明人： Rolf Muller
CPC分类号： H02P6/15
摘要： The stator winding of a brushless D.C. motor receives two current pulses per 360.degree.-el. of rotor rotation, each current pulse being furnished via a respective current path. Each current path contains at least one power transistor switch having conductive and non-conductive states. These states are determined by respective driver transistor switches; when the driver transistor switch is in a high-output-impedance state the respective power transistor switch is rendered conductive, but when in the low-output-impedance state it renders the power transistor switch non-conductive. In various ways disclosed herein measures are taken to prevent the power transistor switches of both current paths from being simultaneously conductive. This may be accomplished using inherent or discrete base-emitter capacitances so connected that a power transistor switch is switched off abruptly but switches-on only after the elapse of a predetermined delay. Alternatively, the Hall voltage produced by the motor's rotor-position-sensing Hall cell may be applied to comparators such that the power transistor switches are not even commanded to conduct except during respective periods each shorter than 180.degree.-el.
摘要翻译： 无刷直流电动机的定子绕组每360°接收两个电流脉冲。 的转子旋转，每个电流脉冲经由相应的电流路径提供。 每个电流路径包含至少一个具有导电和非导通状态的功率晶体管开关。 这些状态由相应的驱动晶体管开关决定; 当驱动晶体管开关处于高输出阻抗状态时，各个功率晶体管开关导通，但是当处于低输出阻抗状态时，使得功率晶体管开关不导通。 以本文公开的各种方式，采取措施来防止两个电流路径的功率晶体管开关同时导通。 这可以使用如此连接的固有或离散的基极 - 发射极电容来使功率晶体管开关突然断开，但是仅在经过预定延迟之后接通。 或者，电动机的转子位置感测霍尔单元产生的霍尔电压可以被施加到比较器，使得功率晶体管开关甚至不命令进行，除了在每个短于180度的各个周期内。
-
公开(公告)号：US5135363A
公开(公告)日：1992-08-04
申请号：US724840
申请日：1991-07-02
申请人： Siegfried Harmsen , Rolf Muller , Gunter Wrobel
发明人： Siegfried Harmsen , Rolf Muller , Gunter Wrobel
CPC分类号： F04D25/0606 , H02K29/08 , H02K7/14
摘要： An axial flow fan for ventilating electrical and electronic equipment includes a brushless, DC external rotor-type central drive motor. The stator is supported by a bearing tube formed of plastic, integrally molded with a mounting flange. In one embodiment, the fan casing forms part of the integral plastic molding.
摘要翻译： 用于通风电气和电子设备的轴流风扇包括无刷直流外转子型中央驱动电机。 定子由一个由塑料制成的轴承管支承，整体模制成一个安装法兰。 在一个实施例中，风扇壳体形成整体塑料模制件的一部分。
-
公开(公告)号：US5120690A
公开(公告)日：1992-06-09
申请号：US691253
申请日：1991-04-25
申请人： Jurgen Jung , Helmut Kretschmer , Rolf Muller
发明人： Jurgen Jung , Helmut Kretschmer , Rolf Muller
CPC分类号： B09B3/005 , C04B18/023 , Y02W30/91 , Y02W30/92
摘要： For a complete utilization of used DeNOx catalysts contaminated with fly ash, the catalyst is crushed to a particle size of usually less than 500 microns, admixed with the ash of a molten ash firing chamber of a coal power plant at weight ratio of usually at least 9 parts molten ash to 1 part catalyst where the catalyst is dissolved in the molten ash at a temperature generally above 1460.degree. C. The resulting molten ash chamber granulated material can be utilized in the usual way, for example in the construction industry, since no pollutants, especially no compounds of tungsten, molybdenum, vanadium and arsenic are eluted into the environment.
摘要翻译： 为了完全利用被粉煤灰污染的二氧化钛催化剂，将催化剂粉碎至通常小于500微米的粒度，与煤电厂的熔融灰分燃烧室的灰分混合，重量比通常至少为 9份熔融灰至1份催化剂，其中催化剂在一般高于1460℃的温度下溶解在熔融灰中。所得到的熔融灰尘室造粒材料可以通常用于建筑行业，因为没有 污染物，尤其是钨，钼，钒和砷的化合物，尤其不溶于环境。
-
公开(公告)号：USRE33813E
公开(公告)日：1992-02-04
申请号：US319276
申请日：1989-03-03
CPC分类号： H02K5/24 , H02K1/187 , H02K11/01 , H02K29/08 , H02K5/1735
摘要： Electric motor with a substantially cylindrical air gap between the stator and the rotor, the stator being fitted to a bearing support for the rotor shaft bearing. In order to reduce noise emissions, the stator is connected to the bearing support by means of an elastic damper and the stator and bearing support are separated from one another by an air gap adjacent at least part of their facing faces.
-
公开(公告)号：USRE33167E
公开(公告)日：1990-02-20
申请号：US101581
申请日：1987-09-28
申请人： Helmut Moosmann , Rolf Muller
发明人： Helmut Moosmann , Rolf Muller
CPC分类号： G01P3/4805 , H02P29/10 , Y10S388/909 , Y10S388/915 , Y10S388/916
摘要： A circuit for speed monitoring, particularly for fan drives. A detection device for producing an input signal sequence is provided which has a speed-dependent repetition frequency. The circuit also has a signal converter for converting the input signal sequence into an output signal whose amplitude is a function of the repetition frequency of the input signal sequence. There is also an evaluation circuit, having at least one threshold value element responsive to the output signal of the signal converter and which responds if the output signal amplitude reaches a value corresponding to a drop below a predetermined minimum speed or a rise above a predetermined maximum speed.
-
86.发明授权Collectorless direct current motor, driver circuit for a drive and method of operating a collectorless direct current motor 失效无集电极直流电动机，驱动电路和运行无集电极直流电动机的方法
公开(公告)号：US4804892A
公开(公告)日：1989-02-14
申请号：US72264
申请日：1987-06-22
申请人： Rolf Muller
发明人： Rolf Muller
CPC分类号： G05D23/1913 , G05D23/24 , H02P6/08 , H02P6/14 , H02P6/34
摘要： A method for the low-loss regulation of a collectorless direct current motor and a semiconductor circuit has, during the commutation phase given by a position sensor and with reduced motor output and number of revolutions, transistors or one end transistor which initially operates temporarily as a switch and thereafter operates temporarily as an analog amplifier element. During the analog period, a current is available which changes slowly according to a ramp function.
摘要翻译： PCT No.PCT / DE86 / 00421 Sec。 371日期1987年6月22日第 102（e）日期1987年6月22日PCT提交1986年10月18日PCT公布。 第WO87 / 02528号公报 日本1987年4月23日。一种用于无集电极直流电动机和半导体电路的低损耗调节的方法在由位置传感器给出的换向阶段期间和具有减少的电动机输出和转数，晶体管或一端 晶体管最初作为开关暂时工作，此后暂时作为模拟放大器元件工作。 在模拟期间，可根据斜坡功能缓慢变化电流。
-
公开(公告)号：US4730136A
公开(公告)日：1988-03-08
申请号：US778772
申请日：1985-09-23
申请人： Rolf Muller
发明人： Rolf Muller
CPC分类号： H02K29/08
摘要： The invention provides a two-pulse brushless direct current motor with reluctance auxiliary torque. The rotor has an approximately trapezoidal magnetization with small gaps between the poles. These gaps are positioned so that they come to rest opposite the point of largest air gap when the motor is deenergized. The motor has a high starting torque from this position of the rotor.
摘要翻译： 本发明提供一种具有磁阻辅助转矩的双脉冲无刷直流电动机。 转子具有大致梯形磁化，极之间具有小的间隙。 这些间隙被定位成使得当马达断电时，它们与最大气隙的点相反地停止。 电机从转子的这个位置开始起动转矩很高。
-
公开(公告)号：US4717850A
公开(公告)日：1988-01-05
申请号：US733132
申请日：1985-05-10
申请人： Rolf Muller
发明人： Rolf Muller
CPC分类号： H02K29/08
摘要： In the case of a two-pulse brushless d.c. motor narrow auxiliary poles (81-84; 115-122) are provided in the region of the boundaries (44, 45) between neighboring main poles of the rotor, the auxiliary poles being at least in part of polarity opposite to that of the surrounding main poles of the rotor. As a result of this, one obtains an especially favorable functional dependence of the induced voltage upon rotor angular position.
摘要翻译： 在双脉冲无刷直流电的情况下 电动机窄辅助极（81-84; 115-122）设置在转子的相邻主极之间的边界（44,45）的区域中，辅助极至少部分地与周围的主极极性相反 转子的主极。 结果，获得了感应电压对转子角位置的特别有利的功能依赖性。
-
公开(公告)号：US4698542A
公开(公告)日：1987-10-06
申请号：US799000
申请日：1985-11-18
申请人： Rolf Muller
发明人： Rolf Muller
摘要： The invention relates to a brushless direct current motor system that includes an outer rotor receiving a load member such as a fan wheel having a plurality of blades. An axial extension of the rotor functions as a drive boss whose diameter is independent of the diameter of the motor stator core and is step-wise smaller in diameter at its outer closed end than at its inner opened end.
摘要翻译： 本发明涉及一种无刷直流电机系统，其包括外转子，其接收诸如具有多个叶片的风扇叶轮的负载构件。 转子的轴向延伸部用作驱动凸台，其直径与电动机定子芯的直径无关，并且在其外封闭端处的直径比在其内开口端处的直径更小。
-
公开(公告)号：US4667122A
公开(公告)日：1987-05-19
申请号：US680327
申请日：1985-02-26
申请人： Rolf Muller
发明人： Rolf Muller
摘要： A motor has been proposed in German Offenlegungsschrift DI-OS 2,730,142 and corresponding U.S. Pat. No. 4,211,963. The windings of the tacho winding are diposed here next to the stator winding in the flat air gap of the main magnet, and the current changes in the statorwinding induce therefor in the tachowinding voltages interfering with a precise working control. On the other hand would a disposition of the tacho generator at a different position of the motor increase its axial length considerably, especially when a magnetic shielding between the motor and the tachogenerator is provided. Therefore, it is a purpose of the present invention to provide a motor ofthe kind initially cited, which with compact construction and especially short length in direction of its rotation axis provides a low interference tacho signal remaining the same or improving with increasing age of the motor, for example in order to improve in any case, but at least to keep the same the ganging flutter of a speed controlled direct drive motor for a record player.
摘要翻译： 德国专利事务所DI-OS 2,730,142和相应的美国专利已经提出了一种电动机。 第4,211,963号。 测速传感器绕组的绕组在这里放置在主磁体的平坦气隙中的定子绕组旁边，并且定子绕组中的电流变化引起了在显示电压中的电流干扰精确的工作控制。 另一方面，在电动机的不同位置处的转速发电机的布置将显着地增加其轴向长度，特别是当提供电动机和转速发电机之间的磁屏蔽时。 因此，本发明的目的是提供一种最初引用的类型的电动机，其具有紧凑的结构，并且在其旋转轴线的方向上特别短的长度方向提供保持相同或随着电动机的年龄增加而改善的低干扰转速信号 例如为了在任何情况下都能改进，但至少要保持相同的记录播放器的速度控制的直接驱动电动机的联动颤动。
-
-
-
-
-
-
-
-
-
搜索结果
187 条记录 (耗时 0.028 秒)
