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1.发明授权Variable reluctance sensor with offset magnets having improved magnetic flux member 失效具有改进的磁通构件的偏移磁体的变量传感器
公开(公告)号：US5236518A
公开(公告)日：1993-08-17
申请号：US836634
申请日：1992-02-14
摘要： A means is provided for improving the magnetic permeability of a magnetic circuit within a variable reluctance sensor having off-set, permanent magnets by appropriately annealing the magnetic flux member. The annealing process includes heating the machined magnetic flux member in a vacuum to a temperature and for a duration sufficient to austenitize the magnetic steel so that full carbide solution is obtained, for example about 1300.degree. F. to about 1550.degree. F. for a duration of about 15 to 30 minutes. The magnetic flux member is then appropriately cooled in the vacuum so as to prevent the formation of martensite. The magnetic circuit, incorporating the annealed magnetic flux member, exhibited improved magnetic permeability, and the sensor signal was increased by as much as about 60 percent during operation. The method of this invention enhances the overall effectiveness of the sensor, particularly when sensing low rotational speeds such as when employed within automotive anti-lock braking or traction control systems.
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2.发明授权Variable reluctance rotation sensor with changing coil linkages and a pair of flux producing magnets 失效可变磁阻旋转传感器具有变化的线圈联动和一对磁通产生磁体
公开(公告)号：US5023546A
公开(公告)日：1991-06-11
申请号：US433306
申请日：1989-11-08
申请人： Andrzej M. Pawlak , Takeshi Shirai
发明人： Andrzej M. Pawlak , Takeshi Shirai
CPC分类号： G01P3/488
摘要： A variable reluctance rotation sensor comprises a rotatable magnetic toothed wheel adjacent a fixed magnetic pickup assembly. The pickup assembly comprises a pair of permanent magnets, each with a similar pole adjacent the wheel and separated circumferentially by the arc between a tooth and a non-adjacent slot. A magnetic flux member with a coil joins the other poles of the magnets in series opposed relationship and extends in close proximity to the tooth wheel to establish separate flux loops for each magnet distributed along the coil. The flux loops are spatially determined by the teeth and slots between the permanent magnets, so that they fluctuate circumferentially and generate an electrical signal in the coil with wheel rotation by variation of the flux linkages to individual turns of the coil. The sensor thus uses spatial flux changes to produce a rotation signal at very low rotational speeds with a larger air gap than that of conventional sensors.
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公开(公告)号：US5510708A
公开(公告)日：1996-04-23
申请号：US326616
申请日：1994-10-20
申请人： Takeshi Shirai , Andrzej M. Pawlak , Alan H. Green
发明人： Takeshi Shirai , Andrzej M. Pawlak , Alan H. Green
摘要： A variable reluctance rotation sensor comprising a flux member having a ferromagnetic pole piece formed of a cylindrical center portion interposed between a first and second end portion. Each of the end portions have a respective surface which contains elongated teeth, similarly separated by slots as teeth on the periphery of a toothed wheel. The cylindrical center portion is positioned with respect to the toothed wheel such that the toothed surfaces of the first and second end portions are positioned adjacent the periphery of the toothed wheel comprising the teeth and slots, the magnetic flux member and toothed wheel defining an air gap. The sensor further comprises permanent magnets which establish main flux loops traversing the air gap, and leakage flux loops linking an electrical coil wound about the cylindrical center portion. As the toothed wheel is rotated, the magnitude of the main flux loops vary in relation to the varying air gap. The leakage flux loops, in turn, vary in relation to the varying main flux loops, the varying leakage flux loops being linked to the electrical coil and resulting in a sinusoidal output voltage signal proportional to the varying leakage flux loops. Each cycle of the output signal corresponds to a predetermined incremental angular rotation of the toothed wheel.
摘要翻译： 一种可变磁阻旋转传感器，包括具有铁磁极片的磁通构件，所述铁磁极片由插入在第一和第二端部之间的圆柱形中心部分形成。 每个端部具有相应的表面，该表面包含细长的齿，其类似地由齿形的齿周边上的齿分隔开。 圆柱形中心部分相对于齿轮定位，使得第一和第二端部的齿形表面邻近包括齿和狭槽的齿轮的周边定位，磁通部件和齿轮限定气隙 。 该传感器还包括永久磁铁，其建立横过气隙的主通量回路，以及连接围绕圆柱形中心部分缠绕的电线圈的漏磁通回路。 当齿轮旋转时，主通量环的大小相对于变化的空气间隙而变化。 漏磁通环路又相对于变化的主磁通环路变化，变化的漏磁通回路与电线圈相连，并产生与变化的漏磁通回路成比例的正弦输出电压信号。 输出信号的每个周期对应于齿轮的预定的增量角旋转。
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公开(公告)号：US5385410A
公开(公告)日：1995-01-31
申请号：US938083
申请日：1992-08-31
申请人： Takeshi Shirai , Andrzej M. Pawlak
发明人： Takeshi Shirai , Andrzej M. Pawlak
CPC分类号： F16C33/78 , F16C41/007 , G01P3/443
摘要： An integral variable reluctance sensor and bearing grease seal assembly (sensor assembly) has at least one magnet and an annular wire coil secured at the interior of a housing which seals an annular space between a dynamic inner race and a static outer race. The sensor assembly is characterized by a relatively large flux change and resulting large peak to peak periodic output due to exploitation of the outer race and housing as high permeance flux paths in the sensor magnetic circuit and an additive arrangement of plural magnets. Sensor output signal strength is variable in step with the number of magnets and output variations due to air gap variations are minimized by symmetrical distribution of the same. The sensor assembly is further characterized by a single dynamic seal and no moving parts.
摘要翻译： 一体积可变磁阻传感器和轴承油脂密封组件（传感器组件）具有固定在壳体内部的至少一个磁体和环形线圈线圈，其密封动态内圈和静态外圈之间的环形空间。 传感器组件的特征在于相对较大的磁通量变化，并且由于外圈和壳体作为传感器磁路中的高磁通通路和多个磁体的添加装置而被开发，从而产生了大的峰值到峰值的周期性输出。 传感器输出信号强度随着磁体数量的变化而变化，并且由于气隙变化引起的输出变化由于其对称分布而被最小化。 传感器组件的特征还在于单个动态密封件，没有移动部件。
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公开(公告)号：US5385411A
公开(公告)日：1995-01-31
申请号：US228785
申请日：1994-04-18
申请人： Takeshi Shirai , Andrzej M. Pawlak
发明人： Takeshi Shirai , Andrzej M. Pawlak
CPC分类号： F16C33/78 , F16C41/007 , G01P3/443
摘要： An integral variable reluctance sensor and bearing grease seal assembly (sensor assembly) has at least one magnet and an annular wire coil secured at the interior of a housing which seals an annular space between a dynamic inner race and a static outer race. The sensor assembly is characterized by a relatively large flux change and resulting large peak to peak periodic output due to exploitation of the outer race and housing as high permeance flux paths in the sensor magnetic circuit and an additive arrangement of plural magnets. Sensor output signal strength is variable in step with the number of magnets and output variations due to air gap variations are minimized by symmetrical distribution of the same. The sensor assembly is further characterized by a single dynamic seal and no moving parts.
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6.发明授权Variable reluctance rotation sensor with changing flux linkages and including a pair of oppositely poled magnets 失效可变磁阻旋转传感器具有变化的磁通键并且包括一对相对极化的磁体
公开(公告)号：US5023547A
公开(公告)日：1991-06-11
申请号：US433000
申请日：1989-11-08
申请人： Andrzej M. Pawlak , Takeshi Shirai
发明人： Andrzej M. Pawlak , Takeshi Shirai
IPC分类号： G01P3/488
CPC分类号： G01P3/488
摘要： A variable reluctance rotation sensor comprises a rotatable toothed wheel and a magnetic pickup assembly comprising a pair of permanent magnets each having a pair of poles with an opposite one of said poles adjacent the toothed wheel. The permanent magnets are separated from each other by an arc equal to the arc between two of the teeth and joined by a magnetic flux member with a multi-turn electrical coil wound thereon. The flux member establishes a common main flux loop through the first and second permament magnets but also extends close to the toothed wheel to further establish additional flux loops separately through each of the permanent magnets. Passage of alternating teeth and slots as the wheel rotates produces a spatial fluctuation in the additional flux loops between the magnets to vary the flux linkages with individual coil turns and increase the electrical signal in the coil over the signal level that would be produced by variations in air gap of the common flux loop alone. The sensor produces a rotational speed signal at very low rotational speeds of greater amplitude and/or with a larger minimum air gap than that of conventional variable reluctance sensors.
摘要翻译： 可变磁阻旋转传感器包括可旋转的齿轮和包括一对永磁体的磁拾取器组件，每个永磁体具有一对磁极，所述一对磁极具有与齿轮相邻的相对的一个磁极。 永磁体通过与两个齿之间的电弧相等的电弧彼此分离，并且通过缠绕在其上的多匝电线圈的磁通部件连接。 助焊剂构件通过第一和第二永久磁铁建立共同的主通量回路，但也靠近齿轮延伸，以进一步分别通过每个永磁体建立额外的磁通回路。 随着轮子旋转，交替的齿和槽的通道在磁体之间的附加磁通环路中产生空间波动，以改变具有各个线圈匝的磁通量，并且增加线圈中的电信号，信号电平将由 单独的通量磁通回路的气隙。 传感器以非常低的旋转速度产生更大振幅的转速信号和/或具有比常规可变磁阻传感器更大的最小气隙的转速信号。
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7.发明授权
公开(公告)号：US5184297A
公开(公告)日：1993-02-02
申请号：US602568
申请日：1990-10-24
IPC分类号： B62D6/00 , B62D6/02 , B62D101/00 , B62D119/00 , B62D121/00
CPC分类号： B62D6/02
摘要： A power steering unit has an electromagnetic mechanism controlled by a computer-based controller for varying the steering effort in accordance with vehicle speed. The same controller is used to adjust the steering effort in accordance with a calibration value to obtain steering effort uniformity. The calibration value is obtained by applying a force to a vehicle wheel and measuring the resulting torque on the steering wheel (or vice versa) and comparing the resulting force to a standard. Any deviation from the standard is stored in the controller as a correction factor. Alternatively, the characteristics of the steering gear and the power steering pump are measured and encoded on the unit when manufactured and the encoded values are read after assembly in a vehicle and used to calculate the correction factor which is then stored in the controller.
摘要翻译： 动力转向单元具有由基于计算机的控制器控制的电磁机构，用于根据车速改变转向力。 相同的控制器用于根据校准值来调节转向力，以获得转向力均匀性。 通过对车轮施加力并测量方向盘上产生的扭矩（或反之亦然）并将所得力与标准进行比较来获得校准值。 任何与标准的偏差作为校正因子存储在控制器中。 或者，当制造时，舵机和动力转向泵的特性被测量和编码在单元上，并且在组装在车辆中之后读取编码值，并用于计算然后存储在控制器中的校正因子。
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公开(公告)号：US5038066A
公开(公告)日：1991-08-06
申请号：US580982
申请日：1990-09-12
摘要： An actuator has a permanent magnet ring with a plurality of radially magnetized poles rotatably positioned between a pair of toothed pole pieces with interdigitated teeth, an electromagnetic coil and pole elements coupling the coil flux to the pole pieces. The pole pieces may themselves be rotatable or stationary. The permanent magnet circuit attempts to move the magnet ring to a first position relative to the pole pieces, and the electromagnetic circuit, depending on the direction of current in the coil, torques the magnet in one direction or another toward stable positions on either side of the first position. The device is used as a two or three position actuator or as an actuator operating against an external force and seeking a position as a function of current.
摘要翻译： 致动器具有永磁体环，其具有可旋转地定位在具有交叉齿的一对齿形极片之间的多个径向磁化的磁极，电磁线圈和将线圈磁通耦合到极片的极性元件。 极片本身可以是可旋转的或静止的。 永磁电路试图将磁环相对于极片移动到第一位置，并且电磁电路根据线圈中的电流方向将一个或多个方向的磁体转向稳定位置 第一名。 该装置用作两个或三个位置致动器或用作抵抗外力的致动器，并且寻求作为电流的函数的位置。
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9.发明授权System and method for streaming data between a portable server computing device and a client computing device 有权用于在便携式服务器计算设备和客户端计算设备之间流传输数据的系统和方法公开(公告)号：US07664456B2
公开(公告)日：2010-02-16
申请号：US11733382
申请日：2007-04-10
IPC分类号： H04H20/71
CPC分类号： H04H20/61
摘要： A system and a method for streaming data between a portable server computing device and a client computing device are provided. The method includes transmitting an RF signal having streaming data from a first audio file from the portable server computing device to a client computing device. The method further includes emitting sound corresponding to the streaming data in the RF signal from the client computing device, in response to the client computing device receiving the RF signal.
摘要翻译： 提供了一种用于在便携式服务器计算设备和客户端计算设备之间流传输数据的系统和方法。 该方法包括将具有来自第一音频文件的流数据的RF信号从便携式服务器计算设备发送到客户端计算设备。 响应于客户端计算设备接收RF信号，该方法还包括从来自客户端计算设备的RF信号中发送与流数据相对应的声音。
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10.发明授权Electromagnetic control apparatus for varying the driver steering effort of a hydraulic power steering system 失效用于改变液压动力转向系统的驾驶员转向力的电磁控制装置
公开(公告)号：US4886137A
公开(公告)日：1989-12-12
申请号：US288662
申请日：1988-12-22
IPC分类号： B62D6/02
CPC分类号： B62D6/02
摘要： A hydraulic power steering system having conventional relatively rotatable spool and valve body elements for flow regulation, a mechanically resilient element for generating a mechanical centering force in relation to the relative rotation of the spool and valve body which tends to restore the spool and valve body to a centered condition, and an integral electromagnetic mechanism which variably opposes the mechanical centering force to adjust the level of operator steering input required to produce a given level of power assist. The electromagnetic mechanism comprises an energized coil and a pair of flux conducting elements supported for rotation with the spool and valve body, respectively. The flux conducting elements have interleaved teeth which are magnetically coupled to the coil to define a magnetic circuit having an inter-tooth working air gap which varies with the relative rotation of the spool and valve body.
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