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    • 2. 发明授权
    • Process for control and regulation of double piston-driven engine with hydrostatic motion transducers
    • 使用静电运动传感器控制和调节双活塞式发动机的过程
    • US3702057A
    • 1972-11-07
    • US3702057D
    • 1970-12-14
    • GRUNDIG EMV
    • RABIGER WOLFGANG
    • F01B11/08F02D41/30F03C1/00F03C1/28F03C1/32F03C1/40F16H43/00F02B41/00
    • F16H43/00F01B11/08F02D41/30Y10S60/91Y10S60/911
    • A system for controlling the relative positions of the two pistons in double or opposed piston engines having hydrostatic motion transducers for transmitting the piston energy to a driveshaft. The control is effected by adding fluid to or withdrawing fluid from the transducers. The system includes means for comparing the positions of the two pistons and the angle of rotation of the driveshaft to generate two synchronous error signals, and means for comparing the actual dead points of said two pistons and the predetermined nominal dead points of each piston to generate first and second dead point error signals, and for relating the first dead point error signal to the second dead point error signal. Fluid is added to or withdrawn from the hydrostatic motion transducers in accordance with the synchronous error signals when the engine speed is below a selected engine speed, and in accordance with a dead point error signal when said engine speed exceeds a predetermined speed. In the system, control of both pistons is simultaneously switched from the synchronous error signal to the dead point error signal and vice versa.
    • 用于控制两个活塞或两个相对的活塞发动机中的相对位置的系统,该活塞发动机具有用于将活塞能量传递到驱动轴的静液压运动换能器。 该控制通过向换能器中添加流体或从其中取出流体来实现。 该系统包括用于比较两个活塞的位置和驱动轴的旋转角度以产生两个同步误差信号的装置,以及用于比较所述两个活塞的实际死点和每个活塞的预定标称死点以产生 第一和第二死点误差信号,并将第一死点误差信号与第二死点误差信号相关联。 当发动机转速低于所选择的发动机转速时,根据当所述发动机转速超过预定速度时的死点误差信号,根据同步误差信号将流体添加到流体静力运动换能器中或从流体静力学运动换能器中取出。 在系统中,两个活塞的控制同时从同步误差信号切换到死点误差信号,反之亦然。
    • 5. 发明授权
    • Apparatus for rapid braking of magnetic tape
    • 磁带快速制动装置
    • US3906299A
    • 1975-09-16
    • US45337074
    • 1974-03-21
    • GRUNDIG EMV
    • MITTELSTAEDT RAINER
    • G11B5/00G11B15/22G11B15/48H02P3/00B65H59/38
    • H02P3/00G11B5/00G11B15/22G11B15/48
    • An arrangement is provided for the rapid braking of magnetic tapes. The apparatus includes first and second motors adapted for driving and being interconnected through a magnetic tape, the motors being adapted for driving the tape in opposite directions and being further adapted for being switched between on and off conditions. A source of voltage is provided to operate the motors. First and second electronic switches connect the source selectively and respectively to the first and second motors. Further electronic switches interconnect the first motor with the second electronic switch and the second motor with the first electronic switch. A mechanical switch arrangement is provided for controlling the first and second electronic switches. Each motor upon being switched from on to off condition is capable of generating a voltage for a limited period of time which operates through the further electronic switches and the first and second electronic switches to switch on the other of the motors whereby the tape is braked. A delay arrangement is provided which is coupled to the further electronic switches for extending the period of time through which the braking operation is effected. According to one embodiment, a memory assembly is provided for effectively storing the last direction of tape movement and operating to prevent undesired feedback between the motors.
    • 提供了用于快速制动磁带的装置。 该装置包括适于驱动并通过磁带互连的第一和第二电动机,所述电动机适于在相反的方向上驱动磁带并进一步适于在导通和关闭状态之间切换。 提供电压源来操作电动机。 第一和第二电子开关将源极选择性地分别连接到第一和第二电动机。 其他电子开关将第一电动机与第二电子开关和第二电动机与第一电子开关互连。 提供了用于控制第一和第二电子开关的机械开关装置。 每个电动机从接通状态切换到关闭状态时,能够通过其它电子开关和第一和第二电子开关在有限的时间段内产生电压,从而开启另一个电动机,由此制动带。 提供延迟装置,其连接到另外的电子开关,用于延长制动操作的时间段。 根据一个实施例,提供存储器组件,用于有效地存储磁带移动的最后方向和操作以防止电动机之间的不期望的反馈。
    • 6. 发明授权
    • Device for ventilating hydrostatic motion converters in free floatingpiston engines
    • 用于在自由浮动发动机中排放静电运动转换器的装置
    • US3745765A
    • 1973-07-17
    • US3745765D
    • 1971-12-08
    • GRUNDIG EMV
    • RAEBIGER W
    • F01B9/04F01B11/08F15B21/04F03G7/06
    • F15B21/044F01B9/04F01B11/08
    • A device for ventilating the hydrostatic motion converters of free-floating piston engines is provided wherein two countercurrent driving pistons are enclosed in each engine cylinder to define joint combustion chambers and drive independent hydrostatic motion converters. The device includes means for detecting the momentary or instantaneous position of each of the pistons in the cylinder and producing output signals representative of those positions. The momentary or instantaneous angular position of the engine output shaft is detected by an independent detector which produces an output signal representative of that position. Individual comparing means receive the output signals from the shaft detecting means and the respective piston detecting means and compare these output signals to produce individual synchronization error signals for each cylinder, which signals are representative of the synchronization error between the instantaneous locations of the pistons in that cylinder and the instantaneous angular location of the shaft. Liquid control means responsive to the synchronization error signals vary the quantity of liquid in the hydrostatic motion converters between the cylinders and the output shaft to reduce the synchronization error. Means are also provided for supplying a constant interference signal, representative of a loss of liquid in the hydrostatic converter, to the liquid control means of one of the pistons, in lieu of the signal from one of the comparing means associated with that piston, while the other of the piston detecting means is in normal operation, so that gases in the hydrostatic system escape therefrom through the liquid varying means associated with the other of the pistons.
    • 8. 发明授权
    • Circuit for controlling the direction of current flow in a load impedance
    • 用于控制负载阻抗中电流流动方向的电路
    • US3731170A
    • 1973-05-01
    • US3731170D
    • 1972-06-19
    • GRUNDIG EMV
    • EMMERT R
    • H02P7/03H03K17/66H02P5/16
    • H03K17/663H02P7/03Y10S388/93
    • One terminal of a load impedance is connected to the collectors of two transistors of opposite conductivity type. Their emitters are connected to positive and negative power supply terminals to receive direct current, and the emitter-collector circuits of the two transistors are in current-carrying polarity with respect to the direct current terminals. The bases of the two transistors are connected to the arm of a single-pole-double-throw switch. The fixed contacts of the switch are connected to the positive and negative power supply terminals so that in one position the base of one transistor is biased to conductivity to allow current to flow in one direction through the load impedance and the conductive transistor. When the switch is in the opposite position the other transistor is conductive and current can flow in the opposite direction through the latter transistor and the load impedance.
    • 负载阻抗的一个端子连接到具有相反导电类型的两个晶体管的集电极。 它们的发射极连接到正和负电源端子以接收直流电流,并且两个晶体管的发射极 - 集电极电路相对于直流端子处于通电极性。 两个晶体管的基极连接到单刀双掷开关的臂。 开关的固定触点连接到正电源端子和负电源端子,使得在一个位置中,一个晶体管的基极被偏置到电导率,以允许电流沿一个方向流过负载阻抗和导电晶体管。 当开关处于相反位置时,另一个晶体管是导通的,并且电流可以通过后一晶体管和负载阻抗在相反方向流动。