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公开(公告)号：US4764714A
公开(公告)日：1988-08-16
申请号：US138733
申请日：1987-12-28
CPC分类号： H02P1/44
摘要： A circuit is provided for controlling energization of the start winding of an alternating current motor whose shaft is divided into a number of angular segments equal to the number of poles of the motor. A shaft pulse is generated each time one of the angular segments rotates past a predetermined point. A line pulse is generated for each half cycle of line voltage. The shaft pulses are multiplied by the denominator of a selected trip-out ratio while the line pulses are multiplied by the numerator of the trip-out ratio. The multiplied shaft and line pulses are provided to an up/down counter which counts the shaft pulses down and the line pulses up. During the counter overflow condition, the circuit connects the start winding to the line voltage source. During the counter underflow condition, the circuit disconnects the start winding from the line voltage source.
摘要翻译： 提供一种电路，用于控制交流电动机的起动绕组的通电，其轴被分成等于电动机的极数的多个角度段。 每当一个角度段旋转超过预定点时，产生轴脉冲。 线路电压的每个半周期产生线路脉冲。 轴脉冲乘以所选脱扣比的分母，而线脉冲乘以脱扣比的分子。 倍增的轴和线脉冲被提供给向上/向下计数器，其对轴脉冲进行计数，线路向上脉冲。 在计数器溢出状态下，电路将起动绕组连接到线路电压源。 在计数器下溢条件期间，电路将起动绕组与线路电压源断开。
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2.发明授权Control system, method of operating a heating apparatus and controlled heating apparatus 失效控制系统，加热装置的操作方法和受控加热装置
公开(公告)号：US5235159A
公开(公告)日：1993-08-10
申请号：US562712
申请日：1990-08-06
CPC分类号： F24C15/106 , G05D23/1909 , H01H57/00
摘要： A control system for regulating electrical power input to the resistive heating elements of an electric heating apparatus, including domestic cooking appliances, is provided which employs at least one piezoceramic relay device. The electrical power is applied with the piezoceramic relay device responsive to control signals and with the control circuitry being directly and ohmically connected to the power source. In one embodiment, the control system employs individual piezoceramic relay devices for power regulation to the individual heating elements while in different embodiments a single piezoceramic relay device regulates power input to a pair of the heating elements. A method of operating the controlled apparatus in such manner and an apparatus having such control system are also disclosed.
摘要翻译： 提供一种用于调节输入到包括家用烹饪器具的电加热设备的电阻加热元件的电力的控制系统，其采用至少一个压电陶瓷中继装置。 响应于控制信号并且控制电路直接和欧姆地连接到电源，电压与压电陶瓷继电器一起施加。 在一个实施例中，控制系统采用单独的压电陶瓷中继装置来对各个加热元件进行功率调节，而在不同实施例中，单个压电陶瓷继电器调节对一对加热元件的功率输入。 还公开了以这种方式操作受控装置的方法和具有这种控制系统的装置。
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公开(公告)号：US4561314A
公开(公告)日：1985-12-31
申请号：US546227
申请日：1983-10-27
IPC分类号： G01L1/12
摘要： A force/flash pressure sensor utilizes a stack of annular rings of a magnetoelastic material. One major stack surface is supported at a plurality of points having substantially equal angular displacement therebetween. A member, moving along the axis of the ring stack responsive to an axial force, or pressure, to be measured, presses a different set of points against the opposite stack surface, to distort the ring stack and alter the magnetic flux density saturation magnitude thereof. The plurality of points in abutment with each of the opposite major stack surfaces is advantageously equal; a number of different configurations for applying force (pressure) along the axis of the ring stack are described.
摘要翻译： 力/闪光压力传感器利用磁弹性材料的一叠环形环。 一个主堆叠表面被支撑在多个点之间，其间具有基本相等的角位移。 响应于待测量的轴向力或压力沿着环堆叠的轴线移动的构件将不同的一组点压在相对的堆叠表面上，以使环堆叠变形并改变其磁通密度饱和度幅度 。 与每个相对的主堆叠表面邻接的多个点有利地相等; 描述了沿着环形堆叠的轴线施加力（压力）的许多不同构造。
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4.发明授权Flexible eddy current surface measurement array for detecting near surface flaws in a conductive part 失效灵活的涡流表面测量阵列，用于检测导电部件中的近表面缺陷
公开(公告)号：US5389876A
公开(公告)日：1995-02-14
申请号：US696455
申请日：1991-05-06
申请人： Kristina H. V. Hedengren , Richard O. McCary , Robert P. Alley , Richard J. Charles , William P. Kornrumpf , John D. Young
发明人： Kristina H. V. Hedengren , Richard O. McCary , Robert P. Alley , Richard J. Charles , William P. Kornrumpf , John D. Young
CPC分类号： G01N27/902 , G01N27/904
摘要： An eddy current probe array is disclosed comprising a plurality of spatially correlated eddy current probe elements sufficiently disposed within a flexible interconnecting structure to collect a discrete plurality of spatially correlated eddy current measurements for nondestructive near surface flaw detection. A plurality of precisely fabricated, substantially identical elements being sufficiently distributed can accommodate inspecting an area of conductor covered by the active width of the array in a single uni-directional scan. The array structure can flexibly conform to accommodate inspection of large, irregular, curved conductive surfaces which cannot be inspected by conventional means.
摘要翻译： 公开了一种涡流探针阵列，其包括充分设置在柔性互连结构内的多个空间相关的涡流探针元件，以收集用于非破坏性近面探伤的离散的多个空间相关涡流测量。 多个精确制造的基本上相同的足够分布的元件可以容纳在单个单向扫描中检查由阵列的有效宽度覆盖的导体的区域。 阵列结构可以灵活地符合适应大型不规则弯曲导电表面的检查，这些传统表面不能用常规方法检查。
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公开(公告)号：US4541288A
公开(公告)日：1985-09-17
申请号：US546228
申请日：1983-10-27
摘要： An operating circuit for use with a magnetoelastic force/pressure sensor provides for changing the current flow through at least one sensor coil at a frequency responsive to the magnitude of a force impingent upon the sensor. The sensor operating circuit operates in a manner to prevent the sensor magnetoelastic core from being driven deeply into saturation, thus providing an operating circuit with a reduced current drain. A number of embodiments, including clock-driven and self-clocking (toggling) circuit providing digital and/or analog outputs are described.
摘要翻译： 用于磁弹性力/压力传感器的操作电路提供以响应于碰撞在传感器上的力的大小的频率改变通过至少一个传感器线圈的电流。 传感器操作电路的工作方式是防止传感器磁致弹性芯深入饱和，从而提供具有减小的电流消耗的操作电路。 描述了包括提供数字和/或模拟输出的时钟驱动和自定时（切换）电路的多个实施例。
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公开(公告)号：US4823075A
公开(公告)日：1989-04-18
申请号：US107328
申请日：1987-10-13
申请人： Robert P. Alley
发明人： Robert P. Alley
CPC分类号： G01R15/202
摘要： A current sensor for use with a conductor with known cross-sectional characteristics is an electronic circuit having a monolithic Hall-effect element disposed substantially perpendicular to the conductor first major surface. A conductive loop substantially encircles the element and is oriented such that its flux is substantially orthogonal to the element surface. An amplifier sets current flow in the loop responsive to minimization of the differential Hall voltage across element. The loop current, at null, will be related to the conductor current by the ratio of the conductor flux path length to the loop flux path length.
摘要翻译： 与具有已知横截面特性的导体一起使用的电流传感器是具有基本上垂直于导体第一主表面设置的单片霍尔效应元件的电子电路。 导电回路基本上环绕元件并被定向成使得其通量基本上与元件表面正交。 放大器根据元件上的差分霍尔电压的最小化设置回路中的电流。 在零点处的环路电流将通过导体通量长度与环路径路径长度的比率与导体电流相关。
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公开(公告)号：US5057962A
公开(公告)日：1991-10-15
申请号：US468320
申请日：1990-01-22
摘要： A microprocessor-based relay system is used in combination with relay contactors and a control circuit therefor to protect an electric motor from overload currents in addition to phase faults, ground faults, load losses, and load jams. The microprocessor is provided with a data base comprising thermal characteristics of the motor during heating and cooling. The heating data comprise current versus time curves stored as a look-up table for which each data point represents a thermal limit, i.e., the maximum time the motor is permitted to operate at a particular current level. The cooling data comprise motor cooling rates. Phase currents are sampled at preselected fixed time intervals during a predetermined period thereof, and an average motor current value is calculated therefrom. A thermal sum, which is initialized at zero upon first starting the motor, is adjusted depending on the average motor current value relative to a predetermined overload current value. The average motor current value is used as an index to the heating curve look-up table. If the thermal sum exceeds the corresponding thermal limit in the look-up table for a predetermined time interval, then an overload condition is indicated, and the relay is tripped.
摘要翻译： 与继电器接触器及其控制电路组合使用的基于微处理器的继电器系统除了相位故障，接地故障，负载损耗和负载卡纸之外，还可以保护电动机免受过载电流的影响。 在加热和冷却期间，微处理器设置有包括电机的热特性的数据库。 加热数据包括作为查找表存储的电流对时间曲线，其中每个数据点表示热限制，即允许电动机在特定电流水平下操作的最大时间。 冷却数据包括电机冷却速率。 在其预定期间以预选的固定时间间隔对相电流进行采样，并从其计算平均电动机电流值。 在首次启动电动机时初始化为零的热和根据相对于预定过载电流值的平均电动机电流值进行调整。 平均电机电流值用作加热曲线查找表的指标。 如果预定时间间隔内的热和超过查找表中相应的热限制，则指示过载状态，并且继电器跳闸。
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公开(公告)号：US4682083A
公开(公告)日：1987-07-21
申请号：US883469
申请日：1986-07-11
申请人： Robert P. Alley
发明人： Robert P. Alley
IPC分类号： H05B41/392 , H05B37/02
CPC分类号： H05B41/3927 , Y10S315/04
摘要： A conventional non-dimming ballast for fluorescent lamps is modified to achieve a 100:1 dimming ratio by connecting a switching module to the ballast. The switching module switches current to and from the fluorescent lamps under control of a level control, resulting in the desired light output. The switching module may be connected either in series or in parallel with the lamps.
摘要翻译： 修改了用于荧光灯的常规非调光镇流器，以通过将开关模块连接到镇流器来实现100:1的调光比。 开关模块在电平控制的控制下将电流切换到荧光灯，从而产生所需的光输出。 开关模块可以与灯串联或并联连接。
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公开(公告)号：US4117373A
公开(公告)日：1978-09-26
申请号：US791702
申请日：1977-04-28
申请人： Robert P. Alley
发明人： Robert P. Alley
IPC分类号： H05B41/24 , H02J9/06 , H02M7/538 , H05B41/285 , H05B41/14
CPC分类号： H02M7/53806 , H02J9/065 , H05B41/2853 , Y10S315/07 , Y10T307/625
摘要： A circuit is provided including a reactor for operating a fluorescent lamp from AC line voltage and including a high frequency inverter for operating the lamp from a battery upon failure of line voltage. The inverter also serves to start the lamp during normal conditions, that is, when AC line voltage of sufficient value is available to the lamp.
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公开(公告)号：US4701680A
公开(公告)日：1987-10-20
申请号：US780142
申请日：1985-09-26
IPC分类号： H05B41/392 , H05B41/16
CPC分类号： H05B41/3924 , Y10S315/04 , Y10S315/07
摘要： A wall box dimmer is connected to a conventional fluorescent lighting system for providing a wide range of dimming. Overvoltages generated during chopping of the AC input waveform are dissipated and the lighting level is modified to reduce the overvoltages. DC power for the control electronics is derived from the voltage across the dimmer.
摘要翻译： 墙壁调光器连接到常规的荧光照明系统，用于提供宽范围的调光。 在交流输入波形斩波期间产生的过电压消耗，并且修改照明电平以减少过电压。 用于控制电子器件的直流电源来自调光器两端的电压。
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