-
公开(公告)号：US4584885A
公开(公告)日：1986-04-29
申请号：US572582
申请日：1984-01-20
Applicant: Robert M. Cadwell
Inventor： Robert M. Cadwell
CPC classification number: G01D5/2417 , G01P15/131
Abstract: Displacement of a movable transducer element is measured by exciting a capacitive gap (preferably differential capacitive gaps) with triangular waves of voltage to obtain a square current wave output into a zero input impedance amplifier. The square wave output is amplified and synchronously detected to produce a d.c. output signal proportional to displacement. The d.c. output signal is fed back to force rebalance electrodes to electrostatically rebalance the movable transducer element. The feedback signal is a measure of the force being transduced. Initial offsets in the position of the transducer element and capacitances of the capacitive gaps are compensated by signals derived from the capacitive gap excitation waveforms.
Abstract translation: 通过用三角波电压激发电容性间隙（优选是差分电容性间隙）来测量可移动换能器元件的位移，以获得输入到零输入阻抗放大器的平方电流波。 方波输出被放大并同步检测以产生直流。 输出信号与位移成正比。 直径 反馈输出信号以迫使重新平衡电极对可移动换能器元件进行静电平衡。 反馈信号是所测量的力的量度。 换能器元件的位置的初始偏移和电容间隙的电容由从电容间隙激励波形得到的信号补偿。
-
公开(公告)号：US4494022A
公开(公告)日：1985-01-15
申请号：US592583
申请日：1984-03-23
Applicant: Toshio Kawara , Yoshihumi Shibahara
Inventor： Toshio Kawara , Yoshihumi Shibahara
Abstract: An electromagnetic force-transducer comprising a magnetic circuit and an electromagnetic coil kept movable in the static field provided by said magnetic circuit. The electromagnetic coil consists of two coaxial parallel windings wound on a common frame with a distance kept between the both. The magnetic circuit comprises an inner magnetic path and an outer magnetic path with a cylindrical clearance left therebetween. In the upper and the lower part of the clearance there are provided with an upper magnetic gap and a lower magnetic gap, respectively. The magnetic field in the upper gap and that in the lower gap are directed oppositely to each other. The coil frame is kept movable vertically in the cylindrical clearance, positioning one of the two windings in the upper magnetic gap and the other in the lower magnetic gap. The two windings are current-supplied in the directions opposite to each other to produce their respective electromagnetic forces in the same direction. Thus, the magnetic fields produced by the two windings are cancelled by each other, so that the resultant magnetic field by the entire electromagnetic coil does not affect the fields provided at the magnetic gaps by the magnetic circuit.
Abstract translation: 一种电磁力传感器，包括磁路和电磁线圈，其可在由所述磁路提供的静态中保持移动。 电磁线圈由缠绕在公共框架上的两个同轴并联绕组组成，两者之间保持一定距离。 磁路包括内部磁路和外部磁路，其间留有圆柱形间隙。 在间隙的上部和下部分别设置有上磁隙和下磁隙。 上间隙中的磁场和下间隙中的磁场相互指向。 线圈框架保持在圆柱形间隙中垂直移动，将两个绕组中的一个定位在上磁隙中，另一个在下磁隙中。 两个绕组在彼此相反的方向上电流供应，以在相同的方向上产生它们各自的电磁力。 因此，由两个绕组产生的磁场被彼此抵消，使得由整个电磁线圈产生的磁场不会影响由磁路在磁隙处提供的磁场。
-
公开(公告)号：US4388943A
公开(公告)日：1983-06-21
申请号：US261242
申请日：1981-05-06
Applicant: Juhani Kukkula
Inventor： Juhani Kukkula
CPC classification number: G01D5/46 , G01L1/083 , G01L11/006 , Y10T137/2409 , Y10T74/206
Abstract: A linkage for use in moment balancing measuring apparatus of the pneumatic type includes first and second pivotally mounted levers, the second lever being adapted to be acted upon by a measuring force and the first lever being adapted to be acted upon by a pneumatic force for balancing the linkage. According to the invention, apparatus are provided for adjustably varying the leverage ratio of the linkage, i.e., the ratio of the pneumatic force to the measuring force according to the particular application to which the linkage is put. The leverage ratio adjusting apparatus includes a rod-like member having one end rotatably attached to one of the levers and first locking means for selectively securing the rod-like member in a particular position corresponding to the particular application to which the linkage is put.
Abstract translation: 用于气动式力矩平衡测量装置的联动装置包括第一和第二枢转安装的杠杆，第二杆适于通过测量力作用，并且第一杆适于通过用于平衡的气动作用 联动。 根据本发明，提供了一种装置，用于可调节地改变联动装置的杠杆比，即根据连杆所在的具体应用的气动力与测量力之比。 杠杆比调节装置包括杆状构件，其一端可旋转地附接到一个杆和第一锁定装置，用于选择性地将杆状构件固定在对应于连杆所在的特定应用的特定位置。
-
公开(公告)号：US4182187A
公开(公告)日：1980-01-08
申请号：US899607
申请日：1978-04-24
Applicant: Richard A. Hanson
Inventor： Richard A. Hanson
CPC classification number: G01L1/086 , G01P2015/0828
Abstract: In order to reduce bias errors resulting from mounting of a force restoring coil assembly element of a force balancing transducer, the force coil assembly is suspended by means of one or more hinges from a force sensing movable member, which includes position pick-off means, that in turn is connected by hinging means to a support member. The effects of strain may further be reduced by locating the first hinges essentially along the axis of the centroid of the pick-off means.
Abstract translation: 为了减少由力平衡换能器的力恢复线圈组件元件的安装引起的偏移误差，力线圈组件通过一个或多个铰链悬挂在力传感可移动构件上，力传感可移动构件包括位置传感装置， 这又通过铰接装置连接到支撑构件。 通过将第一铰链基本上沿着拾取装置的重心的轴线定位，可以进一步减小应变的影响。
-
公开(公告)号：US4085811A
公开(公告)日：1978-04-25
申请号：US711368
申请日：1976-08-03
Applicant: Knothe, Erich , Christoph Berg , Eberhard Stadler
Inventor： Knothe, Erich , Christoph Berg , Eberhard Stadler
CPC classification number: G01G7/04 , G01L1/086 , Y10S177/09
Abstract: A beamless dynamometer or weighing device comprising a coil movable in theorking gap of a fixed magnet, the coil and magnet forming part of an electromagnetic compensation circuit for the dynamometer or device, and an arrangement for guiding movement of the coil within the working gap comprising an air bearing formed of a fixed guiding cylinder and an air-mounted slidable sleeve connected to the coil; preferably two coils are provided, each connected to a separate slidable sleeve, one sleeve being disposed inside the cylinder and the other sleeve outside the cylinder with the cylinder being formed of an annular jacket suppliable with compressed air which, in use, vents into the gap between the sleeves and cylinder, one sleeve being arranged to be acted upon by the force or mass to be measured and the other sleeve carrying a reference mass.
Abstract translation: 一种无梁测力计或称重装置，包括可在固定磁体的工作间隙中移动的线圈，形成用于测力计或装置的电磁补偿电路的一部分的线圈和磁体，以及用于引导线圈在工作间隙内的运动的装置，包括 由固定的引导筒和连接到线圈的空气安装的可滑动套筒形成的空气轴承; 优选地，设置两个线圈，每个线圈连接到单独的可滑动套筒，一个套筒设置在气缸内部，另一个套筒设置在气缸外部，气缸由可用压缩空气供给的环形外壳形成， 在套筒和圆柱体之间，一个套筒被布置成被待测量的力或质量作用，另一个套筒承载参考质量。
-
Patent Agency Ranking
公开(公告)号：US3922603A
公开(公告)日：1975-11-25
申请号：US35668173
申请日：1973-05-02
Applicant: EXAPRECIS SA
Inventor： LESUR ERNEST JACQUES ANDRE
Abstract: The invention relates to a device for transmitting force, comprising a movable means which receives the force to be transmitted and produces an electric current depending on the value of the said force, a movable coil fed by this electric current and rotating according to an angle depending on its value, a spring mechanically connected, on the one hand, to the means which receives the force and, on the other, to the movable coil, the coupling forced on the spring from the movable coil being opposed to the displacement of the movable means which receives the force.
Abstract translation: 本发明涉及一种用于传递力的装置，包括一个可移动装置，该装置承受待传递的力并根据所述力的值产生电流;一个由该电流供给的可动线圈， 在其价值上，弹簧机械地连接到接收力的装置，另一方面与可动线圈机械连接，从可动线圈向弹簧施力的联接件与可移动的线圈的位移相对置 接收力的手段。
-
公开(公告)号：US3897681A
公开(公告)日：1975-08-05
申请号：US35925873
申请日：1973-05-11
Applicant: METTLER INSTRUMENTE AG
Inventor： MEIER EUGEN
Abstract: Improved force measuring apparatus of the one- or two-string type, including means for applying to the movable member of the apparatus a corrective force that compensates for non-linearities in the response of the apparatus over the full range of travel of the pan carrier member between the no-load and full-load positions, thereby to produce a linear variation in the resulting oscillation frequency with respect to load. In the one-string embodiment, linearization means are provided for applying to the oscillatory string means a corrective force that varies quadratically with the displacement of the movable member over its full range between the no-load and full-load positions. In the two-string embodiment, decoupling spring means are provided for independently connecting the two strings in opposite senses between the frame and pan carrier members. The aforementioned linearization means and/or temperature compensation means are also provided for improving the operation of the two-string embodiment.
Abstract translation: 一种或两串式的改进的力测量装置，包括用于向装置的可移动部件施加校正力的补偿力，该校正力补偿装置在盘托架的整个行程范围内的响应中的非线性 在负载和满载位置之间产生一个线性变化，从而产生相对于负载的振荡频率的线性变化。 在一弦实施例中，提供了线性化装置，用于向振荡线装置施加随着可动构件在空载和满载位置之间的整个范围内的位移而二次变化的校正力。 在双线实施例中，提供了去耦弹簧装置，用于在框架和盘托架构件之间以相反的方向独立地连接两根绳。 还提供了上述线性化装置和/或温度补偿装置，用于改善双线实施例的操作。
-
公开(公告)号：US3739798A
公开(公告)日：1973-06-19
申请号：US3739798D
申请日：1971-02-18
Applicant: COMPTEURS COMP D
Inventor： DUCOUSSET R
CPC classification number: F15C3/14 , G01L1/083 , Y10T137/2409 , Y10T137/2452
Abstract: In the several preferred embodiments of the present invention disclosed herein, a pneumatic controller is provided with a depending flexible vane which is cooperatively arranged and positioned to be moved in relation to a gas-bleed orifice for selectively regulating the pressure of a gaseous control media being supplied to a pressure-responsive control device. To control the movements of the vane, a variable force is applied to the vane to selectively deflect it in response to variations of a measured condition. Proportional feedback is provided in a unique fashion by supplying the regulated gas to one or more nozzles which are arranged to jet gas against the vane for reestablishing the equilibrium of the vane in accordance with the regulated gas pressure.
Abstract translation: 在本文公开的本发明的几个优选实施例中，气动控制器设置有依赖的柔性叶片，该柔性叶片协同地布置和定位成相对于气体排放孔移动，用于选择性地调节气体控制介质的压力， 提供给压力响应控制装置。 为了控制叶片的运动，响应于测量条件的变化，向叶片施加可变的力以选择性地偏转叶片。 通过将调节的气体供应到一个或多个喷嘴来提供比例反馈，所述喷嘴布置成喷射气体抵靠叶片，以根据调节的气体压力重新建立叶片的平衡。
-
公开(公告)号：US3581572A
公开(公告)日：1971-06-01
申请号：US3581572D
申请日：1969-06-06
Applicant: ROSEMOUNT ENG CO LTD
Inventor： FRICK ROGER L
CPC classification number: B29C47/92 , B29C47/0009 , B29C2947/92019 , B29C2947/9238 , B29C2947/924 , G01L11/006
Abstract: A pressure sensor for use with high-pressure extruders utilizing a mechanical force-rebalance system wherein a pressure sensed at a first diaphragm causes a flow of fluid from a source of fluid under pressure to enter a chamber. The fluid pressure acts on a second diaphragm or piston member to balance the force on the first diaphragm through a mechanical system. The amount of fluid pressure at the second diaphragm necessary to rebalance the first diaphragm is indicative of the pressure sensed by the first diaphragm.
-
公开(公告)号：US3084551A
公开(公告)日：1963-04-09
申请号：US83138359
申请日：1959-08-03
Applicant: GARRETT CORP
Inventor： WESTMAN SYDNEY E
CPC classification number: G01L1/08 , G01L11/004
-
-
-
-
-
-
-
-
-
Search Results
139
records
(took 0.017 seconds)
