公开(公告)号：US06813925B2

公开(公告)日：2004-11-09

申请号：US10161702

申请日：2002-06-05

申请人： Robert Naumiec ,  Walter Smith ,  Fei Han ,  Eamon Gleeson ,  Robert A. Hedeen

发明人： Robert Naumiec ,  Walter Smith ,  Fei Han ,  Eamon Gleeson ,  Robert A. Hedeen

IPC分类号： G01L2700

CPC分类号： G01L27/005

摘要： In one embodiment, the invention is a pressure sensor calibration system comprising a pressure chamber in fluid communication with a pressure sensor to be calibrated, the chamber is pressurized to a static pressure level. An oscillating surface on a wall of the chamber imparts a rapid pressure fluctuation in the static pressure level of the chamber. These rapid pressure fluctuations in a high-static pressure level chamber are used to calibrate the pressure sensor.

摘要翻译： 在一个实施例中，本发明是一种压力传感器校准系统，其包括与待校准的压力传感器流体连通的压力室，该室被加压至静态压力水平。 在室的壁上的摆动表面给出了室的静压水平的快速压力波动。 高静态压力水平室中的这些快速压力波动用于校准压力传感器。

公开(公告)号：US5503172A

公开(公告)日：1996-04-02

申请号：US386530

申请日：1995-02-06

申请人： Robert A. Hedeen ,  Omer L. Ari

发明人： Robert A. Hedeen ,  Omer L. Ari

IPC分类号： A47L15/42

CPC分类号： A47L15/4246 ,  A47L15/4209

摘要： A dishwasher machine tub for containing water sprayed therein during operation of a dishwasher. The tub includes a wall, a door, and a first wall plate. The wall defines a dishwashing chamber having an opening. The door is connected to the wall and may be positioned to cover and uncover the opening. The first wall plate is spaced apart from the wall, resiliently connected to the wall, and positioned within the chamber. Preferably, the first wall plate is positioned so as to be directly impinged by some of the sprayed water during operation of the dishwasher. The air gap and the resilient connection between the first wall plate and the wall provide localized attenuation of the noise from the drumming impact of the sprayed wash water.

摘要翻译： 一种用于在洗碗机操作期间包含喷洒在其中的水的洗碗机机器桶。 浴缸包括壁，门和第一壁板。 墙壁限定了具有开口的洗碗室。 门连接到墙壁上，并且可以定位成覆盖和露出开口。 第一壁板与壁间隔开，弹性地连接到壁上并且定位在室内。 优选地，第一壁板被定位成在洗碗机的操作期间被一些喷射水直接撞击。 空气间隙和第一壁板和壁之间的弹性连接提供噪声与喷射洗涤水的滚筒冲击的局部衰减。

公开(公告)号：US06802221B2

公开(公告)日：2004-10-12

申请号：US10108971

申请日：2002-03-27

申请人： Robert A. Hedeen ,  Catherine Graichen ,  Cecil M. Daniel ,  Larry R. Handler

发明人： Robert A. Hedeen ,  Catherine Graichen ,  Cecil M. Daniel ,  Larry R. Handler

IPC分类号： G01H108

CPC分类号： G01M13/045 ,  G01N2291/2696

摘要： The present invention is for a system (11) or method for conditioned based monitoring of a bearing assembly. The system (11) comprises a sensor (13) placed in proximity to a bearing assembly (12). The sensor (13) generates a signal indicative of the amplitude and frequency of the vibrational movement of the bearing assembly. A process (14) in communication with the sensor (13) receives the signal from the sensor (13) and generates spectral data representative of the bearing vibrational movement. A database (15) comprises data representative of an amplitude threshold, for at least one predetermined frequency, characteristic of a bearing fault. The processor (15) compares the spectral data to the amplitude threshold and generates a signal indication of the bearing assembly.

摘要翻译： 本发明涉及一种用于轴承组件的用于基于状态的监视的系统（11）或方法。 系统（11）包括放置在轴承组件（12）附近的传感器（13）。 传感器（13）产生指示轴承组件的振动运动的振幅和频率的信号。 与传感器（13）通信的过程（14）接收来自传感器（13）的信号，并产生表示轴承振动运动的频谱数据。 数据库（15）包括代表轴承故障特征的至少一个预定频率的振幅阈值的数据。 处理器（15）将频谱数据与振幅阈值进行比较，并产生轴承组件的信号指示。

公开(公告)号：US5479813A

公开(公告)日：1996-01-02

申请号：US438717

申请日：1995-05-11

申请人： Frederic G. Pla ,  Robert A. Hedeen

发明人： Frederic G. Pla ,  Robert A. Hedeen

IPC分类号： H04R3/00 ,  G01L27/00 ,  G01D18/00

CPC分类号： H04R3/002

摘要： The output of a second sensor is matched to the output of a first sensor. The sensors, such as two microphones, are generally identically and simultaneously exposed to a physical quantity which they have been designed to sense. Their outputs are presented as digital outputs. The second sensor's digital output is numerically adaptively filtered using an adaptive filter having adaptive filtering coefficients. The filter's output is equal to the sum of the products of the second sensor's digital outputs and the associated adaptive filtering coefficients, with the sum taken over a predetermined number of sampling intervals. The adaptive filtering continues until the adaptive filtering coefficients are determined such that the filter's output matches the first sensor's digital output to within a predetermined value. Thereafter, the second sensor's digital output is filtered with fixed coefficients which are equal to the adaptively-determined coefficients.

公开(公告)号：US5463893A

公开(公告)日：1995-11-07

申请号：US243343

申请日：1994-05-16

申请人： Frederic G. Pla ,  Robert A. Hedeen

发明人： Frederic G. Pla ,  Robert A. Hedeen

IPC分类号： H04R3/00 ,  G01L27/00

CPC分类号： H04R3/002

摘要： The output of a second sensor is matched to the output of a first sensor. The sensors, such as two microphones, are generally identically and simultaneously exposed to a physical quantity which they have been designed to sense. Their outputs are presented as digital outputs. The second sensor's digital output is numerically adaptively filtered using an adaptive filter having adaptive filtering coefficients. The filter's output is equal to the sum of the products of the second sensor's digital outputs and the associated adaptive filtering coefficients, with the sum taken over a predetermined number of sampling intervals. The adaptive filtering continues until the adaptive filtering coefficients are determined such that the filter's output matches the first sensor's digital output to within a predetermined value. Thereafter, the second sensor's digital output is filtered with fixed coefficients which are equal to the adaptively-determined coefficients.

摘要翻译： 第二传感器的输出与第一传感器的输出相匹配。 诸如两个麦克风的传感器通常相同地同时地暴露于它们被设计为感知的物理量。 它们的输出作为数字输出。 使用具有自适应滤波系数的自适应滤波器对第二传感器的数字输出进行数值自适应滤波。 滤波器的输出等于第二传感器的数字输出的乘积和相关联的自适应滤波系数的总和，其中总和取决于预定数量的采样间隔。 自适应滤波继续，直到自适应滤波系数被确定为使得滤波器的输出与第一传感器的数字输出匹配在预定值内。 此后，第二传感器的数字输出用等于自适应确定系数的固定系数进行滤波。

公开(公告)号：US5423658A

公开(公告)日：1995-06-13

申请号：US143603

申请日：1993-11-01

申请人： Frederic G. Pla ,  Harindra Rajiyah ,  Anthony A. Renshaw ,  Robert A. Hedeen

发明人： Frederic G. Pla ,  Harindra Rajiyah ,  Anthony A. Renshaw ,  Robert A. Hedeen

IPC分类号： B64C1/40 ,  F02C7/045 ,  G10K11/178 ,  F01D25/00

CPC分类号： G10K11/1788 ,  F02C7/045 ,  F05D2260/962 ,  G10K2210/107 ,  G10K2210/121 ,  G10K2210/1281 ,  G10K2210/32271 ,  G10K2210/32291 ,  G10K2210/511 ,  Y02T50/671

摘要： A noise source for an aircraft engine active noise cancellation system in which the resonant frequency of noise radiating structure is tuned to permit noise cancellation over a wide range of frequencies. The resonant frequency of the noise radiating structure is tuned by a plurality of drivers arranged to contact the noise radiating structure. Excitation of the drivers causes expansion or contraction of the drivers, thereby varying the edge loading applied to the noise radiating structure. The drivers are actuated by a controller which receives input of a feedback signal proportional to displacement of the noise radiating element and a signal corresponding to the blade passage frequency of the engine's fan. In response, the controller determines a control signal which is sent to the drivers, causing them to expand or contract. The noise radiating structure may be either the outer shroud of the engine or a ring mounted flush with an inner wall of the shroud or disposed in the interior of the shroud.

摘要翻译： 用于飞机发动机主动噪声消除系统的噪声源，其中噪声辐射结构的谐振频率被调谐以允许在宽范围的频率上的噪声消除。 噪声辐射结构的谐振频率由布置成接触噪声辐射结构的多个驱动器调谐。 驾驶员的激励导致驾驶员的扩张或收缩，从而改变施加到噪声辐射结构的边缘负载。 驱动器由控制器启动，控制器接收与噪声辐射元件的位移成比例的反馈信号的输入和对应于发动机风扇的叶片通过频率的信号。 作为响应，控制器确定发送到驱动器的控制信号，使其扩展或收缩。 噪声辐射结构可以是发动机的外护罩或安装在护罩的内壁上或设置在护罩内部的环。

公开(公告)号：US5172597A

公开(公告)日：1992-12-22

申请号：US612937

申请日：1990-11-14

申请人： Robert A. Hedeen

发明人： Robert A. Hedeen

IPC分类号： G01H3/12

CPC分类号： G01H3/12

摘要： The detection of sound emitted from a source in a dynamic environment of ambient background noise employs a sufficiently distributed array of sound intensity probes enclosing a sound source is adapted to collect measurements over the same time interval in a non-specific acoustic environment. Each probe in the array is comprised of a pair of mutually spaced microphones generally unmatched in their gain and phase response. A multi-channel fourier spectrum analyzer is used to provide a direct signal processing determination of sound intensity at each probe from pressure measurements taken at each microphone. Their computation is corrected to compensate for gain and phase mismatch between each microphone pair using independently derived probe calibration factors. These correction factors are linearly applied to the sound intensity determination at each probe of the array. Based on the geometry of the probe array and the sound intensity computed at each probe; an approximation of the net flow of emitted sound power through the closed surface of the probe array is made. This closed surface integral approach to determining the net flow of sound power effectively averages out any contribution due to ambient background noise, retaining only the total sound power emitted by the source exclusive of background noise.

摘要翻译： 在环境背景噪声的动态环境中从源发射的声音的检测采用包围声源的充分分布的声强探测器阵列适于在非特定声学环境中在相同的时间间隔上采集测量结果。 阵列中的每个探针由一对相互间隔的麦克风组成，通常在其增益和相位响应中不匹配。 多声道傅立叶频谱分析仪用于通过每个麦克风进行的压力测量，对每个探头的声强进行直接信号处理确定。 它们的计算被校正，以使用独立导出的探针校准因子来补偿每个麦克风对之间的增益和相位失配。 这些校正因子线性地应用于阵列的每个探针处的声强确定。 基于探针阵列的几何形状和每个探针计算的声强; 通过探针阵列的封闭表面的发射声功率的净流量的近似值。 用于确定声功率净流量的这种封闭表面积分方法有效地平均了由于环境背景噪声造成的任何贡献，仅保留源不包含背景噪声的总发声功率。

公开(公告)号：US5124600A

公开(公告)日：1992-06-23

申请号：US641324

申请日：1991-01-15

申请人： Robert A. Hedeen

发明人： Robert A. Hedeen

IPC分类号： H02K5/24 ,  H02K9/06

CPC分类号： H02K5/24 ,  H02K9/06

摘要： An electrical motor with integral silencer is provided having a motor housing defining an inlet aperture at one end and an expansion chamber at the other end. The expansion chamber has a reduced cross-sectional area at the entrance and exit of the expansion chamber compared to the cross-sectional area of the chamber. The exit of the expansion chamber provides an outlet aperture in the housing. A stator is situated in the housing and a rotor is rotatably mounted within the stator. A fan is secured to the rotor and rotates therewith for pulling air in the outlet aperture through the stator and exhausting the air through the expansion chamber to the housing exterior. The expansion chamber provides an impedance mismatch for the acoustic energy generated by the fan preventing a portion of the acoustic energy from exiting the expansion chamber.

摘要翻译： 具有整体消音器的电动马达设置有电动机壳体，该电动机壳体在一端限定入口孔口，在另一端限定一个膨胀室。 与腔室的横截面积相比，膨胀室在膨胀室的入口和出口处具有减小的横截面面积。 膨胀室的出口在壳体中提供出口孔。 定子位于壳体中，并且转子可旋转地安装在定子内。 风扇被固定到转子并随其一起旋转，以通过定子拉出出口孔中的空气并将空气通过膨胀室排出到壳体外部。 膨胀室为由风扇产生的声能提供阻抗失配，防止声能的一部分离开膨胀室。

公开(公告)号：US06985803B2

公开(公告)日：2006-01-10

申请号：US10159512

申请日：2002-05-30

申请人： Aiman Albert Abdel-Malek ,  Steven Hector Azzaro ,  Robert A. Hedeen ,  Larry R. Handler ,  Robert D. Cryer ,  Cecil M. Daniel

发明人： Aiman Albert Abdel-Malek ,  Steven Hector Azzaro ,  Robert A. Hedeen ,  Larry R. Handler ,  Robert D. Cryer ,  Cecil M. Daniel

IPC分类号： G05D1/00 ,  G06F7/00

CPC分类号： G07C5/008 ,  B61K9/00

摘要： A system for monitoring the condition of a vehicle has at least one wireless transmitter in on the vehicle, and in communication with the vehicle computer system. Data representative of operating parameters generated during the operation of the vehicle is downloaded to the transmitter, which transmits the data to a wireless receiver positioned proximal to a path of travel of the vehicle. The receiver is linked to a processor for transmission of the data to the processor for storage and processing if necessary. The system may also include at least one sensor, positioned proximal the path of travel, for detecting a physical phenomenon emanating from at least one vehicle component. The sensor generates a signal, which is transmitted to the processor. The processor is capable of analyzing the signal generating data indicative of operating condition of the vehicle component. The sensor, and/or receiver, mounted to a structure positioned proximal the path of travel of the vehicle.

摘要翻译： 用于监视车辆状态的系统在车辆上具有至少一个无线发射器，并与车辆计算机系统通信。 将在车辆操作期间产生的操作参数的数据下载到发射机，发射机将数据发送到位于车辆行进路径附近的无线接收机。 接收器被链接到处理器，用于将数据传输到处理器以进行存储和处理（如果需要的话）。 系统还可以包括位于行进路径附近的至少一个传感器，用于检测从至少一个车辆部件发出的物理现象。 传感器产生一个信号，传送到处理器。 处理器能够分析指示车辆部件的操作状态的信号产生数据。 传感器和/或接收器，安装到位于车辆行进路径附近的结构。

公开(公告)号：US5548653A

公开(公告)日：1996-08-20

申请号：US110176

申请日：1993-08-20

申请人： Frederic C. Pla ,  Robert A. Hedeen ,  Imdad Imam

发明人： Frederic C. Pla ,  Robert A. Hedeen ,  Imdad Imam

IPC分类号： G10K11/178 ,  A61F11/06

CPC分类号： G10K11/1788 ,  G10K2210/116 ,  G10K2210/1161 ,  G10K2210/129 ,  G10K2210/3027 ,  G10K2210/3216 ,  G10K2210/509

摘要： An active noise and vibration control system which minimizes noise output by creating a secondary, cancelling noise and/or vibration field using vibrational inputs. The system includes one or more piezoceramic actuators mounted to the inner surface of a magnetic resonance imaging device. The actuators can be either mounted directly to the device or to one or more noise cancelling members which are resiliently mounted to the device. Transducers are also provided for sensing the noise or vibrations generated by the device and producing an error signal corresponding to the level of noise or vibrations sensed. A controller sends a control signal to the actuators in response to the error signal, thereby causing the actuators to vibrate and generate a noise or vibration field which minimizes the total noise emanating from the device. Alternatively, the system can use noise and vibration feedback simultaneously.

摘要翻译： 一种主动噪声和振动控制系统，通过使用振动输入创建次级，消除噪声和/或振动场，使噪声输出最小化。 该系统包括安装到磁共振成像装置的内表面的一个或多个压电陶瓷致动器。 致动器可以直接安装到设备或者被安装到设备上的一个或多个噪声消除构件。 还提供传感器用于感测由装置产生的噪声或振动，并产生对应于所感测到的噪声或振动水平的误差信号。 控制器响应于误差信号向致动器发送控制信号，从而使致动器振动并产生最小化从设备发出的总噪声的噪声或振动场。 或者，系统可以同时使用噪声和振动反馈。