公开(公告)号：US4799003A

公开(公告)日：1989-01-17

申请号：US55196

申请日：1987-05-28

申请人： Xuan M. Tu ,  Daho Taghezout

发明人： Xuan M. Tu ,  Daho Taghezout

IPC分类号： G04C10/00

CPC分类号： G04C10/00

摘要： The converter described comprises a generator (2) having a rotor (3) driven by a spring (1) via a gear-train (4), and means (11) for electrically braking the rotor (3). In one form of embodiment of the converter, the mean rotational speed of the rotor (3) is adjusted to a predetermined set speed by a control circuit (12) which periodically cuts out the braking means (11) in response to a reference signal having a period equal to the ratio between a predetermined rotational angle of the rotor (3) and the set speed. The control circuit (12) cuts the braking means (11) in again after a length of time which varies in response to a signal generated by a circuit (26, 27) for comparing the real angular position of the rotor (3) at the beginning of each period of the refernce signal with the angular position it should be in when running at the set speed.The converter may for instance be used in a timepiece having hands (9) that are also driven by the spring (1).

摘要翻译： 所描述的转换器包括具有经由齿轮系（4）由弹簧（1）驱动的转子（3）的发电机（2）和用于电动制动转子（3）的装置（11）。 在转换器的一种形式中，通过控制电路（12）将转子（3）的平均转速调节到预定的设定速度，控制电路（12）响应于参考信号周期性地切断制动装置（11） 等于转子（3）的预定旋转角度与设定速度之间的比率的周期。 控制电路（12）在经过电路（26,27）产生的信号变化的时间长度之后再次切断制动装置（11），用于比较转子（3）的实际角位置 每个周期的推荐信号的起始点与以设定的速度运行时应该处于的角位置。 转换器可以例如用于具有也由弹簧（1）驱动的手（9）的钟表中。