公开(公告)号：US4353220A

公开(公告)日：1982-10-12

申请号：US160429

申请日：1980-06-17

申请人： Peter W. Curwen ,  Richard A. Dorman

发明人： Peter W. Curwen ,  Richard A. Dorman

IPC分类号： F04B35/04 ,  H02K33/02 ,  F04B49/06 ,  F25B41/04

CPC分类号： H02K33/02 ,  F04B35/045

摘要： A method and apparatus for controlling a resonant piston compressor of the type comprising an electrodynamic linear reciprocating motor adapted to be driven cyclically by an alternating current power source and having at least one piston coupled to and adapted to be driven within a selectively valved working cylinder by the linear reciprocating motor in synchronism with the frequency of the alternating current power source. Enclosed volumes of gas act as resilient gas springs coacting with the piston and with the linear reciprocating motor to form a mechanical resonant system having a resonant frequency substantially centered on the frequency of the alternating current power source. A midstroke porting arrangement is responsive to the position of the resonant piston for selectively communicating a gas spring control valve with said gas springs. The invention operates to variably control with the gas spring control valve the pressure of the gas in the gas springs to thereby dynamically modulate the stiffness of the resilient gas spring in a manner to control the stroke of the resonant piston compressor within predetermined safe limits. The method and apparatus further include sensing a plurality of different operating parameters of the resonant piston compressor and deriving output sensed signals representative of the respective parameters, combining the sensed parameter output signals to derive therefrom an output control signal and applying the output control signal to the gas spring control valve to variably control the opening and closing of the gas spring control valve.

摘要翻译： 一种用于控制这种类型的共振活塞式压缩机的方法和装置，其包括电动线性往复式电动机，其适于由交流电源循环驱动，并且具有至少一个活塞，所述至少一个活塞联接到并适于通过选择性阀门工作缸被驱动 线性往复电动机与交流电源的频率同步。 封闭体积的气体作为与活塞和线性往复运动马达共同作用的弹性气体弹簧形成具有基本上以交流电源的频率为中心的谐振频率的机械谐振系统。 中行移动装置响应于谐振活塞的位置，用于选择性地将气弹簧控制阀与所述气弹簧连通。 本发明操作以可变地控制气弹簧控制阀气体弹簧中的气体的压力，从而以预定的安全限度来控制弹性气弹簧的刚度，以控制谐振活塞式压缩机的行程。 所述方法和装置还包括感测谐振活塞式压缩机的多个不同的操作参数并且导出表示相应参数的输出感测信号，组合所感测的参数输出信号以从其中导出输出控制信号并将输出控制信号施加到 气弹簧控制阀可变地控制气弹簧控制阀的打开和关闭。

公开(公告)号：US4345442A

公开(公告)日：1982-08-24

申请号：US160306

申请日：1980-06-17

申请人： Richard A. Dorman

发明人： Richard A. Dorman

IPC分类号： F25B49/02 ,  H02K33/18 ,  F25B13/00 ,  F04B49/06

CPC分类号： H02K33/18 ,  F25B2400/073 ,  F25B49/025 ,  H02P21/00

摘要： A control system for controlling the operation of a reciprocating resonant free-piston variable stroke compressor of the type driven by electrodynamic linear motors wherein the spring-mass system of the compressor which is forced into vibration by the linear motor, is arranged to have a selectively variable mechanical resonant frequency generally centered on the power line frequency of the alternating current power source used to drive the linear motor. The control system provided by this invention variably controls the opening and closing of a gas spring control valve that in turn regulates the pressure of gas filled volumes selectively connected to a manifold vented by the valve. The volumes comprise the resilient gas springs for the resonant piston compressor. For this purpose, the control system comprises an alternating current sensor for deriving a sensed output signal representative of the magnitude and phase of the alternating current supplied to the linear reciprocating motor, a reciprocating piston displacement/velocity sensor for deriving a signal representative of the reciprocating free piston velocity, and an .alpha. angle detector responsive to the signal from the alternating current sensor and the piston velocity signal from the piston displacement/velocity sensor for comparing the phase of the alternating current supplied to the linear reciprocating motor to the reciprocating free resonant piston displacement/velocity and deriving an output .alpha. angle control signal that then is supplied to an RPC control logic circuit for the RCP heat pump. The RPC control logic circuit derives motor voltage control relays for controlling the supply voltage valve to the A-C coils of the linear motor.

摘要翻译： 用于控制由电动力线性电动机驱动的类型的往复式共振自由活塞可变行程压缩机的操作的控制系统，其中由线性电动机强制进入振动的压缩机的弹簧质量系统被布置成具有选择性地 可变机械谐振频率通常以用于驱动线性电动机的交流电源的电力线频率为中心。 由本发明提供的控制系统可变地控制气弹簧控制阀的打开和关闭，该气弹簧控制阀又调节选择性地连接到由阀排出的歧管的气体填充体积的压力。 这些体积包括用于谐振活塞式压缩机的弹性气弹簧。 为此，控制系统包括用于导出代表提供给线性往复运动马达的交流电流的大小和相位的感测输出信号的交流传感器，用于导出代表往复运动的信号的往复运动的位移/速度传感器 自由活塞速度和响应于来自交流传感器的信号和来自活塞位移/速度传感器的活塞速度信号的α角检测器，用于将提供给线性往复运动马达的交流电的相位与往复式自由谐振活塞 位移/速度，并导出输出角度控制信号，然后将其提供给用于RCP热泵的RPC控制逻辑电路。 RPC控制逻辑电路导出电机电压控制继电器，用于控制线性电机的A-C线圈的电源电压阀。

公开(公告)号：US5703424A

公开(公告)日：1997-12-30

申请号：US714246

申请日：1996-09-16

申请人： Richard A. Dorman

发明人： Richard A. Dorman

IPC分类号： F16C39/06 ,  H02K7/09

CPC分类号： F16C32/0451

摘要： A control system for a magnetic bearing includes a sensor which generates an output representative of the relative shaft position. The signal from the sensor is processed by an integrator and offset adjustment block and a difference amplifier to subtract the processed sensor signal from a reference voltage. The difference signal result is fed to a bias control circuit including voltage dividers which generates a voltage which is received by coil current power amplifiers for both the upper and lower magnetic coils. Coil currents are then generated to stabilize the magnetic bearing.

摘要翻译： 用于磁轴承的控制系统包括产生表示相对轴位置的输出的传感器。 来自传感器的信号由积分器和偏移调整块和差分放大器进行处理，以从参考电压中减去处理的传感器信号。 差分信号结果被馈送到偏置控制电路，该偏置控制电路包括分压器，该分压器产生由线圈电流功率放大器为上和下磁性线圈接收的电压。 然后产生线圈电流以稳定磁性轴承。

公开(公告)号：US4758065A

公开(公告)日：1988-07-19

申请号：US709563

申请日：1985-03-08

申请人： Richard A. Dorman ,  Gregory Hull-Allen

发明人： Richard A. Dorman ,  Gregory Hull-Allen

IPC分类号： G01D5/26 ,  G02B23/26

CPC分类号： G01D5/268

摘要： A fiber optic sensor probe system comprises an electromechanical arrangement system which enables a fiber optic probe to lock onto a null point relative to a target which null point represents an in focus condition for the probe relative to the target. A servomechanism feedback circuit maintains the probe in an in focus condition relative to the target if the target moves. A dithering motion is provided to the probe such that, when the electrical output of the probe has a frequency component which is the same frequency as that of the dither, an out of focus condition of the probe relative to the target exists and the servomechanism feedback system operates to correct it. A monochromatic light source is used to eliminate the problem of different spectral components of light having slightly different focal lengths. A second dither or oscillation of the servomechanism's motor drive voltage causes the motor to oscillate and thus enables it to avoid becoming stuck by static friction, therefore enabling the system to achieve its proper null point. Finally, the geometry of the probe is such that the lens face is not parallel to the target, so that flat regions in the area of the null response point of the output curve of the probe which might cause the probe to hunt excessively for the null point are eliminated.

摘要翻译： 光纤传感器探针系统包括机电布置系统，其使得光纤探针能够相对于目标锁定到零点上，该空点表示探针相对于目标的聚焦状态。 如果目标移动，伺服机构反馈电路将探针保持在相对于目标的聚焦状态。 向探针提供抖动运动，使得当探针的电输出具有与抖动的频率分量相同的频率分量时，探针相对于目标的焦距偏离条件存在，并且伺服机构反馈 系统操作来纠正它。 单色光源用于消除具有稍微不同焦距的光的不同光谱分量的问题。 伺服机构的电动机驱动电压的第二次抖动或振荡导致电动机振荡，从而使其能够避免被静摩擦阻塞，从而使系统能够实现其正确的零点。 最后，探头的几何形状使得透镜面不平行于目标，使得探头输出曲线的零点响应点区域中的平坦区域可能导致探头过度追踪零点 点消除。

公开(公告)号：US4694474A

公开(公告)日：1987-09-15

申请号：US875554

申请日：1986-06-18

申请人： Richard A. Dorman ,  Robert E. Johnson

发明人： Richard A. Dorman ,  Robert E. Johnson

IPC分类号： G06M9/00 ,  H03K5/1532 ,  H03K21/40 ,  G06M7/00

CPC分类号： H03K5/1532 ,  G06M9/00

摘要： A device for counting objects in a stacked relationship which includes a bifurcated optical cable, a light source for directing light through the bundle at the stack and a sensor for generating a signal proportional to the light reflected by the stack. The signal is digitized and fed to a digital counter. Various displays connected to the counter indicate the count results.

摘要翻译： 一种用于对堆叠关系中的物体进行计数的装置，包括分叉光缆，用于引导光通过堆叠处的束的光源和用于产生与由堆叠反射的光成比例的信号的传感器。 信号被数字化并馈送到数字计数器。 连接到计数器的各种显示器指示计数结果。

公开(公告)号：US4719409A

公开(公告)日：1988-01-12

申请号：US782887

申请日：1985-10-02

申请人： Richard A. Dorman

发明人： Richard A. Dorman

IPC分类号： G01H11/06 ,  G01R27/26 ,  G01H11/00 ,  G01R27/02

CPC分类号： G01R27/2605 ,  G01H11/06

摘要： A new variable impedance type system is described for measuring a preselected physical parameter such as spacing, displacement, pressure, vibration, etc. A sensor/transducer is positioned to provide the variable impedance. The sensor/transducer is part of a self-oscillatory circuit which produces pulses having a pulse rate proportional to the physical parameter being measured.

摘要翻译： 描述了用于测量诸如间隔，位移，压力，振动等的预选物理参数的新的可变阻抗型系统。定位传感器/换能器以提供可变阻抗。 传感器/换能器是自振荡电路的一部分，其产生具有与所测量的物理参数成比例的脉冲速率的脉冲。

公开(公告)号：US4674882A

公开(公告)日：1987-06-23

申请号：US709582

申请日：1985-03-08

申请人： Richard A. Dorman ,  Curtis D. Kissinger ,  Leo Hoogenboom ,  Gregory Hull-Allen ,  Samuel Fallek

发明人： Richard A. Dorman ,  Curtis D. Kissinger ,  Leo Hoogenboom ,  Gregory Hull-Allen ,  Samuel Fallek

IPC分类号： G01B11/02 ,  G01B11/14

CPC分类号： G01B11/026

摘要： A displacement measuring instrument for measuring the displacement of a target including in combination a fiber optic lens assembly including means for maintaining said assembly in space relation with said target, dither means for vibrating said assembly toward and away from said target about the lens null along the axis of said assembly, first electronic means for providing a first output voltage proportional to displacement of said assembly from said target, second electronic means cancelling that portion of said first output voltage resulting from displacement due to said dither means and providing a second voltage resulting from displacement due to means other than said dither means, servo means receiving said second output voltage and moving said assembly with respect to said target to null said second output voltage and measurement means measuring the movement of said servo means.

摘要翻译： 一种用于测量目标的位移的位移测量仪器，包括组合的光纤透镜组件，所述光纤透镜组件包括用于将所述组件保持与所述目标物处于空间关系的装置，所述抖动装置用于使所述组件朝向和离开所述目标绕着所述透镜零点沿着 所述组件的第一电子装置，用于提供与所述组件从所述目标的位移成比例的第一输出电压的第一电子装置，第二电子装置抵消由于所述抖动装置引起的位移而产生的所述第一输出电压的那部分，并且提供由 由伺服装置接收所述第二输出电压并相对于所述目标移动所述组件的位移是零，所述第二输出电压和测量装置测量所述伺服装置的运动。

公开(公告)号：US4291258A

公开(公告)日：1981-09-22

申请号：US160305

申请日：1980-06-17

申请人： Howard L. Clark ,  Richard A. Dorman ,  Paul Back

发明人： Howard L. Clark ,  Richard A. Dorman ,  Paul Back

IPC分类号： H02K33/00

CPC分类号： H02K33/00

摘要： A control method and system for quasi-proportionally controlling the magnitude of DC excitation current supplied to the DC field coil windings of a linear reciprocating motor in proportion to the magnitude of the AC excitation current supplied to the AC field coil windings of the motor.

摘要翻译： 与供给到电动机的交流励磁线圈绕组的交流励磁电流的大小成正比的线性往复运动电动机的直流励磁电流的正比例地控制直流励磁电流的大小的控制方法和系统。

公开(公告)号：US5133527A

公开(公告)日：1992-07-28

申请号：US692564

申请日：1991-04-29

申请人： Hsiang M. Chen ,  Paul Lewis ,  Donald S. Wilson ,  Richard A. Dorman

发明人： Hsiang M. Chen ,  Paul Lewis ,  Donald S. Wilson ,  Richard A. Dorman

IPC分类号： F16F15/03

CPC分类号： F16F15/03

摘要： The present invention relates to an active mount system in which a vibration sensor such as a force gauge or an accelerometer senses vibrational forces transmitted through a resilient mount by a load such as a machine. The invention further includes a digital narrow-band least mean square filter that receives a sinusoid synchronous with the rotating machinery and an error signal from the load cell and generates a corrective signal to be amplified and transmitted to the electromagnet which supplies an attenuating force to the resilient mount in response to the signal. As an alternative, a wide frequency range control can be realized by the use of a wide frequency range, high gain amplifier and multi-filter phase compensation circuitry to generate the corrective force signal which is amplified and transmitted to the electromagnet.

摘要翻译： 本发明涉及一种主动安装系统，其中诸如力量表或加速度计的振动传感器感测通过诸如机器的负载通过弹性安装件传递的振动力。 本发明还包括数字窄带最小均方滤波器，其接收与旋转机械同步的正弦波和来自测力传感器的误差信号，并产生要被放大并传输到电磁体的校正信号，该电磁体向 响应信号的弹性安装。 作为替代，可以通过使用宽频率范围，高增益放大器和多滤波器相位补偿电路来实现宽频率范围控制，以产生被放大并传输到电磁体的校正力信号。

公开(公告)号：US4761609A

公开(公告)日：1988-08-02

申请号：US87402

申请日：1987-08-20

申请人： Richard A. Dorman ,  Donald E. Welch

发明人： Richard A. Dorman ,  Donald E. Welch

IPC分类号： G01P3/481 ,  G01R7/14

CPC分类号： G01P3/481

摘要： A tachometer signal conditioner circuit functions to accept a wide range of input signals and produces a digital pulse signal which indicates a gear shaft phase reference position. Tachometer input signals of either a true 1/revolution or an N/revolution signal with a single pulse or N pulses of different amplitude than the other pulses during the same shaft revolution can be used. The circuit comprises tachometer signal conditioner circuitry for amplifying and filtering the input from the tachometer, tachometer signal detector circuitry to produce digital pulses synchronous with the tachometer signal cycles and to detect the occurrence of a tachometer signal with a different amplitude during each 1/revolution or N/revolution period, a blanking signal generator which prevents tachometer signal noise from generating spurious 1/rev pulses during operation in the N/rev mode, and an output driver which produces signals to the remaining signal circuitry and to a front panel indicator lamp. One application of the circuit is to direct the distribution of balance weights in an airplane engine.

摘要翻译： 转速计信号调节器电路用于接收宽范围的输入信号，并产生指示齿轮轴相位基准位置的数字脉冲信号。 可以使用具有单个脉冲的真实1 /转的转速计输入信号或具有不同振幅的N个脉冲的转速信号，同时在相同的轴转速期间的其他脉冲。 该电路包括用于放大和滤波来自转速计的输入的转速计信号调节器电路，转速计信号检测器电路，以产生与转速计信号周期同步的数字脉冲，并且在每1 /转期间检测出具有不同振幅的转速计信号的发生，或 N /转周期，消隐信号发生器，其防止在N / rev模式下操作期间转速计信号噪声产生寄生1 / rev脉冲;以及输出驱动器，其向剩余信号电路和前面板指示灯产生信号。 该电路的一个应用是指导平衡重量在飞机发动机中的分配。