公开(公告)号：US4016470A

公开(公告)日：1977-04-05

申请号：US578454

申请日：1975-05-19

申请人： Andrew Gabor ,  Kenneth W. Cocksedge

发明人： Andrew Gabor ,  Kenneth W. Cocksedge

IPC分类号： B23Q17/22 ,  B23B39/04 ,  B23B49/04 ,  B23Q15/22 ,  G01B7/312 ,  G05D3/14 ,  H02K15/16 ,  B23B49/00

CPC分类号： H02K15/16 ,  B23B49/04 ,  G01B7/312 ,  G05D3/14 ,  G05D3/1418 ,  Y10T29/53913 ,  Y10T408/175 ,  Y10T408/21

摘要： Method and apparatus for accurately positioning a blank angular position transducer element for boring at its center. A relatively high frequency carrier signal is applied to the blank transducer element to be bored and is thereby induced in a master rotor element which is rotated at a constant speed in an operative relationship with the blank. The rotor is made deliberately eccentric with respect to its axis of rotation, and the induced signal contains a carrier signal, a component indicative of relative angular position, and a once-per-revolution eccentricity error component, if the blank element is also eccentric with respect to the axis of rotation. Error detection circuitry isolates the once-per-revolution eccentricity error component, and resolution circuitry resolves it into x and y directions for application to error display devices, or to actuators connected to move the blank transducer element automatically until the x and y components are both zero. The blank element can then be bored by a tool movable along and rotable about the axis of rotation.

摘要翻译： 用于准确地定位用于在其中心钻孔的空白角位置换能器元件的方法和装置。 将较高频率的载波信号施加到待钻孔的空白换能器元件，从而在主转子元件中感应，该主转子元件以与坯件成操作关系的恒定速度旋转。 转子相对于其旋转轴故意偏心，并且感应信号包含载波信号，指示相对角位置的分量和每转一次的偏心误差分量，如果空白元件也偏心 相对于旋转轴。 误差检测电路隔离每转一次的偏心误差分量，分辨率电路将其分解为x和y方向，以应用于误差显示装置，或连接到自动移动空白换能器元件的执行器，直到x和y分量均为 零。 然后可以通过沿着旋转轴线可移动并可围绕旋转轴线旋转的工具来钻孔空白元件。

公开(公告)号：US3867687A

公开(公告)日：1975-02-18

申请号：US34277473

申请日：1973-03-19

申请人： HONEYWELL INC

发明人： GEALT ARTHUR E

IPC分类号： G01N27/04 ,  G05D3/14 ,  G05F1/10

CPC分类号： G05D3/1418 ,  G01N27/045

摘要： A liquid conductivity measuring instrument uses a sensing cell having energizing and measuring electrodes and includes a variable gain servo system which is regulated by an attenuator. The attenuator circuit is responsive to a variation in the energizing current of the sensing cell and is arranged to provide a variable impedance signal shunting path for a servo drive signal.

摘要翻译： 液体电导率测量仪器使用具有激励和测量电极的感测单元，并且包括由衰减器调节的可变增益伺服系统。 衰减器电路响应感测单元的通电电流的变化，并且被布置成为伺服驱动信号提供可变阻抗信号分流路径。

公开(公告)号：US3866103A

公开(公告)日：1975-02-11

申请号：US27943372

申请日：1972-08-10

申请人： YOKOGAWA ELECTRIC WORKS LTD

发明人： MAEZAWA KEIZO ,  OHTA SUSUMU

IPC分类号： H03F3/38 ,  G01R17/06 ,  G01R19/18 ,  G05B11/06 ,  G05D3/12 ,  G05D3/14 ,  G05D3/18 ,  G08C19/38 ,  H02P3/18 ,  H02P25/04 ,  H02P27/02 ,  H03F3/04 ,  H03F3/387 ,  H03F3/393 ,  G05F1/00

CPC分类号： H03F3/387 ,  G01R19/18 ,  G05D3/1418 ,  G05D3/1472 ,  G05D3/18

摘要： A servoamplifier, of the type accepting a DC input signal and controlling a two-phase AC servomotor therewith, is characterized by a transformerless control circuit capable of obviating errors due to AC line noise and common mode noise. An input circuit, formed by two choppers operated 180* out of phase with each other, converts the DC input signal into two AC signals which are applied to two inputs of a differential-input voltage amplifier which combines the signal into an amplified output signal. This signal is amplified again by a power amplifier and is applied to the control coil of the AC servomotor for driving the servomotor. Means are provided for referring to a common potential the signals existing in the input circuit, the voltage amplifier, the power amplifier, and the control coil of the servomotor, which effectively eliminates, without the use of an isolating transformer, noise signals causing misoperation of the servomotor. In further aspects, the servoamplifier dispenses with the need for a power capacitor by employing a phase shifting circuit to operate the choppers, and prevents a hazardous reflection of energy from an AC power source into the control circuit by driving the servomotor through a power transformer.

摘要翻译： 接收直流输入信号并控制其两相交流伺服电机的伺服放大器的特征在于能够消除由于交流线路噪声和共模噪声引起的误差的无变压器控制电路。 由两个彼此相差180度的斩波器形成的输入电路将DC输入信号转换成两个交流信号，该信号被施加到差分输入电压放大器的两个输入端，该差分输入电压放大器将该信号组合成放大的输出信号。 该信号被功率放大器再次放大，并且被施加到用于驱动伺服电动机的AC伺服电动机的控制线圈。 提供了用于参考存在于伺服电动机的输入电路，电压放大器，功率放大器和控制线圈中的信号的公共电位的装置，其有效地消除了不使用隔离变压器的噪声信号导致误操作 伺服电机 在另外的方面，通过采用移相电路来操纵斩波器，伺服放大器省去了对功率电容器的需要，并且通过驱动伺服电动机通过电力变压器来防止来自AC电源的能量对控制电路的危险反射。

公开(公告)号：US3808531A

公开(公告)日：1974-04-30

申请号：US31620172

申请日：1972-12-18

申请人： BENDIX CORP

发明人： LEVINE A ,  PARFOMAK W

IPC分类号： G05D3/14 ,  G01R17/06

CPC分类号： G05D3/1418

摘要： A closed loop meter movement wherein the meter pointer is directly coupled to the shaft of a feedback signal generator and circuitry is provided for applying the feedback signal to the meter movement to satisfy requirements of smooth operation and low power consumption. A monitor is provided for monitoring pointer position with respect to a command signal.

摘要翻译： 闭环仪表运动，其中仪表指针直接耦合到反馈信号发生器的轴并且电路被提供用于将反馈信号施加到仪表运动以满足平滑操作和低功耗的要求。 提供监视器用于监视相对于命令信号的指针位置。

公开(公告)号：US3633088A

公开(公告)日：1972-01-04

申请号：US3633088D

申请日：1971-03-17

申请人： UNITED AIRCRAFT CORP

发明人： KUPERSMITH BERTRAM F

IPC分类号： G05D3/14 ,  G05G5/00

CPC分类号： G05D3/1418 ,  G05B2219/49382 ,  G05D3/1427

摘要： Unidirectional feedback around a servoamplifier clamps the gain of the amplifier when the position feedback potential indicates the approaching of a stop. The clamping is in response to an amplifier output potential of a polarity that drives the servoed device into the stop, and is inoperative when the amplifier is of a polarity to drive the servoed device away from the stop. Full gain is therefore available when driving away from the stop. Increased accuracy is achieved, eliminating all position loop errors, by utilizing position feedback potential as a summing potential to control the operation of the clamping loop.

摘要翻译： 伺服放大器周围的单向反馈会在位置反馈电位指示停止的接近时钳位放大器的增益。 钳位是响应于驱动伺服设备进入停止的极性的放大器输出电位，并且当放大器具有驱动伺服设备远离停止的极性时不起作用。 因此，当离开停车站时，可获得全部收益。 通过利用位置反馈电位作为求和电位来控制钳位回路的运行，可以提高精度，消除所有的位置环路误差。

公开(公告)号：US3593337A

公开(公告)日：1971-07-13

申请号：US3593337D

申请日：1968-08-23

申请人： BENDIX CORP

发明人： ELLISON VICTOR D

IPC分类号： B64D45/00 ,  G05D3/14 ,  G08C19/08

CPC分类号： B64D43/02 ,  G05D3/1418

摘要： A motion detecting device for sensing the direction and magnitude of such motion in the form of a sealed electromechanical transducer including a highly sensitive synchro having a rotor comprising magnetic flux conducting material and a rotatably stator with a plurality of series connected primary windings energized by an AC source of electrical energy and servoed in response to the electrical output thereof, as determined by the rotor position, to follow movements of the rotor relative to the stator and thereby reestablish a null or zero output relationship of the stator and the rotor, said output being a result of variations in the impedance of the windings when the rotor is displaced from a predetermined null or zero output position relative to the stator.

公开(公告)号：US3584277A

公开(公告)日：1971-06-08

申请号：US3584277D

申请日：1969-03-26

申请人： MINI IND CONST MASINI

发明人： TEODORESCU DAN

IPC分类号： G05D3/14 ,  H02K17/04 ,  H02P5/28

CPC分类号： H02K17/04 ,  G05D3/1418 ,  H02K99/20

摘要： A squirrel-cage motor of the ferroresonant type, having two pairs of stator windings in series with respective tuning condensers energized in parallel from a source of alternating current, is provided with a feedback winding on each stator pole designed to aid or to oppose an applied control signal, all the feedback windings being connected in series across two branches of a phase-discriminating network extending from a common terminal to symmetrical taps on two parallel stator windings. Each branch includes a resistor in series with a diode, the two diodes being oppositely poled so that a voltage difference is generated across the feedback circuit upon a relative phase shift of the currents traversing the two pairs of stator windings. The common terminal is energized by an AC voltage in step with the supply voltage through a transformer or a resistive voltage divider.

公开(公告)号：US3553662A

公开(公告)日：1971-01-05

申请号：US3553662D

申请日：1967-09-08

申请人： CONTROL DATA CORP

发明人： GOSS LLOYD C

IPC分类号： G05D3/14 ,  G11B5/596 ,  G11B5/48 ,  G11B21/08 ,  H01F21/06

CPC分类号： G11B5/596 ,  G05D3/1418

摘要： THE FOLLOWING SPECIFICATION DISCLOSES APPARATUS FOR ACCURATELY POSITIONING A MEMBER AT ANY ONE OF A PLURALITY OF DISCRETE MAJOR LOCATIONS AS WELL AS A PLURALITY OF MINOR LOCATIONS ASSOCIATED WITH EACH OF THE MAJOR LOCATIONS. THE APPARATUS COMPRISES A STATIONARY DIFFERENTIAL TRANSFORMER, A POSITION FEEDBACK TRANSDUCER ROD WHICH CONSTITUTES THE CORE OF THE DIFFERENTIAL TRANSFORMER, AN ERROR SIGNAL GENERATING CIRCUIT RESPONSIVE TO THE OUTPUT OF THE DIFFERENTIAL TRANSFORMER AND A SERVO POSITIONING MECHANISM FOR MAINTAINING THE ERROR SIGNAL AT NULL. THE FEEDBACK TRANSDUCER ROD COMPRISES A NON-MAGNETIC ROD HAVING A PLURALITY OF TRANSVERSE GROOVES MACHINED THEREIN AT POINTS CORRESPONDING TO THE MAJOR LOCATIONS, THESE GROOVES BEING PLATED WITH A MAGNETIC MATERIAL. THE ERROR SIGNAL GENERATING MEANS IS ADAPTED TO SELECTIVELY GENERATE A BOGUS ERROR SIGNAL TO CAUSE THE SERVO POSITIONING MECHANISM TO SHIFT THE MEMBER AN AMOUNT PROPORTIONAL TO THE SENSE AND MAGNITUDE OF THE BOGUS ERROR SIGNAL.

公开(公告)号：US3532997A

公开(公告)日：1970-10-06

申请号：US3532997D

申请日：1966-04-20

申请人： NOUVELLE D ELECTRONIQUE ET DE

发明人： FAYE PIERRE

IPC分类号： G05D3/14 ,  H03H19/00 ,  H03B3/04

CPC分类号： H03H19/002 ,  G05D3/1418

公开(公告)号：US3209220A

公开(公告)日：1965-09-28

申请号：US84197259

申请日：1959-09-24

申请人： JOY IVAN L

发明人： JOY IVAN L

IPC分类号： F15B9/03 ,  G05B19/16 ,  G05B19/42 ,  G05D3/14

CPC分类号： G05B19/4205 ,  F15B9/03 ,  G05B19/16 ,  G05B2219/23421 ,  G05D3/1418