-
1.发明授权公开(公告)号：US09350216B2
公开(公告)日：2016-05-24
申请号：US13729814
申请日：2012-12-28
CPC分类号： H02K11/225 , G01D5/2451 , H02K37/14
摘要： Absolute multi-turn position sensing integrated within the structure of a hybrid stepper motor implemented by sharing the magnetic structure of the motor with the sensing means. An alternating magnetic field is obtained from a single magnet within the stepper motor rotor by use of alternating flux paths directed to large Barkhausen jump effect sensing elements. Pulses generated from the large Barkhausen sensing are decoded electronically and stored in a non-volatile memory to absolutely locate the motor position within a fraction of 1 electrical cycle of the motor over an arbitrary range. This coarse position sensing can optionally be extended by use of a higher resolution absolute within-electrical-cycle sensing means to provide integrated high resolution position sensing over an arbitrary number of revolutions.
摘要翻译： 绝对多圈位置检测集成在混合式步进电机的结构内，通过与传感装置共享电动机的磁性结构来实现。 通过使用指向大型Barkhausen跳跃效应感测元件的交变磁通路径，从步进电动机转子内的单个磁体获得交变磁场。 从大型巴克豪森传感器产生的脉冲电子解码并存储在非易失性存储器中，以将马达位置绝对定位在电机的1个电循环的任意范围内。 可以通过使用更高分辨率的绝对内部电循环感测装置来扩展这种粗略位置感测，以在任意转数上提供集成的高分辨率位置感测。
-
公开(公告)号：US5977737A
公开(公告)日：1999-11-02
申请号：US150263
申请日：1998-09-09
IPC分类号： G05B11/28
CPC分类号： G05B11/28
摘要： An all digital control method for motor drivers eliminates physical motor current sensing. The motor and the driver are modeled to estimate the actual current and the estimated current is used to perform motor control. This provides simplified driver circuitry. Driver non-linearity due to driver dead time may be compensated and minimum driver on times are accommodated while providing good waveform fidelity, minimized motor heating and increased motor system damping.
摘要翻译： 用于电机驱动器的全数字控制方法可消除物理电机电流检测。 电机和驱动器被建模以估计实际电流和用于执行电机控制的估计电流。 这提供了简化的驱动电路。 由于驱动器死区时间引起的驱动非线性可能会被补偿，同时提供最小的驱动时间，同时提供良好的波形保真度，最小化的电机加热和增加的电机系统阻尼。
-
公开(公告)号：US07075196B1
公开(公告)日：2006-07-11
申请号：US10217744
申请日：2002-08-13
IPC分类号： H02K4/00
CPC分类号： H02K29/12 , H02K11/225 , H02K41/03 , H02K2201/18
摘要： An AC synchronous motor, also known as a stepper motor, uses its magnetics and drive coils to produce both motion and excitation for sets of position sensing coils. Each drive phase is equipped with one or more sensing coils, which may be differentially wound, with the coils configured to act as secondaries of a linear variable differential transformer (LVDT). The primary of the so-formed LVDT is the motor drive winding. The outputs from these coils are fed to a microprocessor or DSP through an internal or external A/D converter. The microprocessor or DSP decodes the measured voltages using resolver strategies to produce a position measurement. An alternate mode of operation uses these same coils to form a variable reluctance resolver. This alternative mode of operation could be used for sensing coarse position while the motor drive is not energized.
-
公开(公告)号：US4912976A
公开(公告)日：1990-04-03
申请号：US67183
申请日：1987-06-26
CPC分类号： G01N35/1009 , G01F23/263 , G01F23/266 , G01N2035/1025
摘要： A liquid level sensing system comprising a probe and a reactive element carried by the probe. The reactive element forms a portion of a tuned circuit in a voltage-controlled oscillator. The output of the voltage-controlled oscillator is compared to a fixed frequency reference signal and a frequency/phase detector generates a signal indicative of any difference. The frequency/phase detector output is applied to the voltage-controlled oscillator to maintain the output frequency of the oscillator at the frequency of the reference signal. The output of the frequency/phase detector is also differentiated to develop a pulse when the frequency/phase detector output signal varies rapidly, indicating initial contact between the probe and the surface of a liquid held within a container.
摘要翻译： 一种液位传感系统，包括探头和由探头承载的反作用元件。 无功元件在压控振荡器中形成调谐电路的一部分。 将压控振荡器的输出与固定频率参考信号进行比较，并且频率/相位检测器产生指示任何差异的信号。 频率/相位检测器输出被施加到压控振荡器，以将振荡器的输出频率保持在参考信号的频率。 当频率/相位检测器输出信号迅速变化时，频率/相位检测器的输出也被微分，以产生脉冲，表明探针与保持在容器内的液体表面之间的初始接触。
-
公开(公告)号：US20230028251A1
公开(公告)日：2023-01-26
申请号：US17870811
申请日：2022-07-21
摘要： A compact mobile high-frequency Antenna that quickly and quietly self-adjusts to minimize Voltage Standing Wave Ratio (VSWR). Includes a compact tuning coil and a rolling contact. A Reentrant cap serves as a capacitive top hat. A spiral cut enhances the efficiency is this very short antenna. A tough insulating tube covers the antenna to serve as a radome protect the user from RF burns. The use of rolling contacts on a smooth inside diameter of the tuning coil greatly reduces the force to move the contactor as well as the acoustical noise generated when tuning. A controller drives a servo motor to position the contactor to the optimal position within the tuning coil and selects the impedance to connect between the unused end of the tuning coil and the feed point of the antenna to optimize VSWR.
-
6.发明申请公开(公告)号：US20140184030A1
公开(公告)日：2014-07-03
申请号：US13729814
申请日：2012-12-28
IPC分类号： H02K11/00
CPC分类号： H02K11/225 , G01D5/2451 , H02K37/14
摘要： Absolute multi-turn position sensing integrated within the structure of a hybrid stepper motor implemented by sharing the magnetic structure of the motor with the sensing means. An alternating magnetic field is obtained from a single magnet within the stepper motor rotor by use of alternating flux paths directed to large Barkhausen jump effect sensing elements. Pulses generated from the large Barkhausen sensing are decoded electronically and stored in a non-volatile memory to absolutely locate the motor position within a fraction of 1 electrical cycle of the motor over an arbitrary range. This coarse position sensing can optionally be extended by use of a higher resolution absolute within-electrical-cycle sensing means to provide integrated high resolution position sensing over an arbitrary number of revolutions.
摘要翻译： 绝对多圈位置检测集成在混合式步进电机的结构内，通过与传感装置共享电动机的磁性结构来实现。 通过使用指向大型Barkhausen跳跃效应感测元件的交变磁通路径，从步进电动机转子内的单个磁体获得交变磁场。 从大型巴克豪森传感器产生的脉冲电子解码并存储在非易失性存储器中，以将马达位置绝对定位在电机的1个电循环的任意范围内。 可以通过使用更高分辨率的绝对内部电循环感测装置来扩展这种粗略位置感测，以在任意转数上提供集成的高分辨率位置感测。
-
公开(公告)号：US07723942B1
公开(公告)日：2010-05-25
申请号：US12368221
申请日：2009-02-09
IPC分类号： G05B19/29
CPC分类号： H02K11/225 , H02K37/14 , H02K37/18 , H02K41/03 , H02P6/17
摘要： An integrated motor and position sensor achieves motion between a moving portion and a stationary portion by electrically energizing poles to interact with magnetics respectively on the moving and stationary portions. The position sensor includes a plurality of sensing coils placed to intercept the magnetic flux between a plurality of the poles and the magnetics. The outputs from these coils are fed to a microprocessor DSP through an internal or external A/D converter. The microprocessor or DSP decodes the measured voltages using resolver strategies to produce a position, velocity or acceleration measurement.
摘要翻译： 集成的电动机和位置传感器通过使电极通电并分别与磁性体相互作用而实现运动部分和静止部分之间的运动。 位置传感器包括多个感测线圈，其被设置成截取多个极与磁体之间的磁通。 这些线圈的输出通过内部或外部A / D转换器馈送到微处理器DSP。 微处理器或DSP使用分解器策略对测量的电压进行解码，以产生位置，速度或加速度测量。
-
公开(公告)号：US07538460B2
公开(公告)日：2009-05-26
申请号：US11415512
申请日：2006-05-02
CPC分类号： H02K29/12 , H02K11/225 , H02K41/03 , H02K2201/18
摘要： An AC synchronous motor, also known as a stepper motor, uses its magnetics and drive coils to produce both motion and excitation for sets of position sensing coils. Each drive phase is equipped with one or more sensing coils, which may be differentially wound, with the coils configured to act as secondaries of a linear variable differential transformer (LVDT). The primary of the so-formed LVDT is the motor drive winding. The outputs from these coils are fed to a microprocessor or DSP through an internal or external A/D converter. The microprocessor or DSP decodes the measured voltages using resolver strategies to produce a position measurement. An alternate mode of operation uses these same coils to form a variable reluctance resolver. This alternative mode of operation could be used for sensing coarse position while the motor drive is not energized.
摘要翻译： AC同步电动机也称为步进电动机，它使用其磁性和驱动线圈来产生位置传感线圈组的运动和激励。 每个驱动相配备有可被差分地缠绕的一个或多个感测线圈，线圈被配置为充当线性可变差动变压器（LVDT）的次级。 如此形成的LVDT的主要是电机驱动绕组。 这些线圈的输出通过内部或外部A / D转换器馈送到微处理器或DSP。 微处理器或DSP使用分解器策略对测量的电压进行解码，以产生位置测量。 一种替代的操作模式使用这些相同的线圈来形成可变磁阻解算器。 这种替代的操作模式可以用于在电机驱动器未通电时感测粗略位置。
-
公开(公告)号：US5942694A
公开(公告)日：1999-08-24
申请号：US748135
申请日：1996-11-12
CPC分类号： G01N35/1016 , G01N2035/1018
摘要： An apparatus is provided for detecting the pressure of a fluid. The device includes a device for detecting the pressure of a fluid comprising (a) a housing; (b) a first conduit disposed within the housing, having an open inlet end, and an outlet end; (c) a second conduit disposed within the housing having an inlet end and an open outlet end; and (d) a pressure detector disposed within the housing in abutment with the outlet end of the first conduit and the inlet end of the second conduit, such that the pressure detector is in direct operative contact with a fluid flowing within the first and second conduits. Typically, the pressure detector is a pressure transducer. Preferably, the pressure transducer is located within the body, such that the first conduit is disposed at an angle with respect to the pressure sensitive surface of the transducer, the angle being between about 50.degree. and about 75.degree., most preferably between about 65.degree. and about 70.degree.. It is also preferable that the fluid is a degassed liquid such as degassed water.
摘要翻译： 提供了一种用于检测流体压力的装置。 该装置包括用于检测流体的压力的装置，包括（a）壳体; （b）设置在壳体内的第一导管，具有开放的入口端和出口端; （c）设置在壳体内的第二导管具有入口端和敞开的出口端; 和（d）压力检测器，设置在壳体内，与第一导管的出口端和第二导管的入口端相邻，使得压力检测器与在第一和第二导管内流动的流体直接操作接触 。 通常，压力检测器是压力传感器。 优选地，压力传感器位于主体内，使得第一导管相对于换能器的压敏表面成角度设置，角度在约50°至约75°之间，最优选在约65° 约70°。 还优选地，流体是脱气的液体，例如脱气的水。
-
公开(公告)号：US5428470A
公开(公告)日：1995-06-27
申请号：US916306
申请日：1992-07-17
IPC分类号： G01N33/483 , G01N35/00 , G01N35/04 , G05B19/042 , G05B19/416 , G01N33/00
CPC分类号： G01N35/00732 , G01N35/00584 , G05B19/0421 , G05B19/416 , G01N2035/00326 , G01N2035/00455 , G01N2035/00683 , G01N2035/00752 , G01N2035/0475 , G01N35/00871 , G05B2219/25197 , G05B2219/25232 , G05B2219/25314 , G05B2219/33189 , G05B2219/33273 , G05B2219/34047 , G05B2219/34205 , G05B2219/37175 , G05B2219/41127 , G05B2219/41326 , G05B2219/42034 , G05B2219/42237 , G05B2219/43162 , Y10T436/115831 , Y10T436/12
摘要： An automated analytical system module design essentially electrically isolates modular elements within the analyzer system with inter-module communications provided via packet-based communications. The modules may include a motor controller which estimates motor temperature to enable high initial torque with motor failure prediction and detection. The modules in such a system can be identified on serial communications loops by a module reset and count-off process.
摘要翻译： 自动分析系统模块设计基本上将分析仪系统中的模块化元件电隔离，并通过基于分组的通信提供的模块间通信。 模块可以包括电动机控制器，该电动机控制器通过电动机故障预测和检测来估计电动机温度以实现高初始转矩。 这种系统中的模块可以通过模块复位和计数过程在串行通信环路上识别。
-
-
-
-
-
-
-
-
-
搜索结果
13 条记录 (耗时 0.015 秒)
