公开(公告)号：US4770065A

公开(公告)日：1988-09-13

申请号：US936999

申请日：1986-12-02

申请人： Joseph Woyton

发明人： Joseph Woyton

IPC分类号： F16H61/662 ,  H02K7/00 ,  H02K51/00 ,  F16H11/06 ,  G05B5/01

CPC分类号： F16H61/66236 ,  Y10T477/6237

摘要： A mechanically adjustable variable speed drive includes an electric actuation apparatus which can be controlled by an analog embodiment or a digital circuitry embodiment. A speed change actuator is automatically and mechanically adjustable, such as with a controlled servomotor. A tachometer determines the actual rotational speed of a drive shaft, which is compared in a digital controller with a manually set desired rotational output speed. The digital controller (or an analog circuit in the case of the analog embodiment) controls the servomotor to adjust the mechanically adjustable variable speed drive. An automatic deadband means inhibits driving of the servomotor whenever the tachometer signal and the desired speed setting signal is within a predetermined deadband, which deadband is adaptively changed responsive to various conditions. The rotational information, both desired and actual, may be displayed, with display of the desired speed prior to actual operation of the drive being used to accurately preset the desired speed.

摘要翻译： 机械可调变速驱动器包括可由模拟实施例或数字电路实施例控制的电致动装置。 变速执行器可自动和机械调节，例如带有受控伺服电机。 转速计确定驱动轴的实际转速，在数字控制器中与手动设定的所需旋转输出速度进行比较。 数字控制器（或在模拟实施例的情况下的模拟电路）控制伺服电机来调节机械可调变速驱动器。 每当转速计信号和期望的速度设定信号在预定的死区内时，自动死区装置禁止驱动伺服电动机，该死区根据各种条件自适应地改变。 可以在使用驱动器的实际操作来精确地预设所需速度之前显示期望和实际的旋转信息，其中显示所需速度。