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    Close loop control apparatus and method for a force rebalance transducer
    1.
    发明授权
    Close loop control apparatus and method for a force rebalance transducer 失效
    用于力平衡传感器的闭环控制装置和方法

    公开(公告)号：US4282470A

    公开(公告)日：1981-08-04

    申请号：US34353

    申请日：1979-04-30

    Applicant: Christopher I. Reynolds

    Inventor： Christopher I. Reynolds

    IPC: G01C19/28 ,  G01L1/08 ,  G01P15/13 ,  B64C17/02

    CPC classification number: G01P15/132 ,  G01C19/28 ,  G01L1/086

    Abstract: A closed loop control system for maintaining a force transducer assembly in a balanced position is disclosed. The control system has a feedback loop control circuit for providing a force rebalance signal at one of a plurality of predetermined discrete amplitude values during each of a plurality of successive equal duration time intervals. The signal has a constant amplitude during each interval. The control circuit further provides a respective digital representation for each amplitude value of the rebalance signal for each of the successive time intervals. Thereby, a precise determination of the value of the time-force product can be generated with the concomitant determination of the forces acting upon the force responsive transducer. The control system is particularly useful for non-linear transducers, such as square law devices where the time-force product is difficult to determine with continuously variable amplitude values.

    Abstract translation: 公开了一种用于将力传感器组件保持在平衡位置的闭环控制系统。 控制系统具有反馈回路控制电路，用于在多个连续相等持续时间间隔的每一个期间，以多个预定的离散振幅值之一提供力重新平衡信号。 信号在每个间隔期间具有恒定的幅度。 控制电路还为连续的每个时间间隔的重新平衡信号的每个振幅值提供相应的数字表示。 因此，通过伴随确定作用在力响应换能器上的力，可以产生对时间力产品的值的精确确定。 控制系统对于非线性换能器尤其有用，例如平方律装置，其中难以用连续可变的振幅值确定时间力产品。

    Depth sound indicator
    2.
    发明授权
    Depth sound indicator 失效
    深度声音指示器

    公开(公告)号：US4097836A

    公开(公告)日：1978-06-27

    申请号：US767389

    申请日：1977-02-10

    Applicant: Parvin Riddle ,  Christopher I. Reynolds

    Inventor： Parvin Riddle ,  Christopher I. Reynolds

    IPC: G01S7/56 ,  G01S15/08 ,  G01S9/66

    CPC classification number: G01S15/08 ,  G01S7/56

    Abstract: An audible tone depth sounder indicator apparatus changes the repetition rate of its audio output to indicate deviation in actual water depth from a selected reference depth. A change in tone of the audible output distinguishes positive and negative deviations from the reference depth, and there is no audible signal when actual depth equals the selected reference depth.

    Abstract translation: 可听音色深度发声器指示装置改变其音频输出的重复率，以指示实际水深与所选参考深度的偏差。 声音输出的音调变化区别于参考深度的正偏差和负偏差，当实际深度等于所选参考深度时，没有可听信号。

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