摘要:
The oscillating mechanical device comprises a shaft on which an oscillating member is mounted, and which is resiliently urged towards a middle angular equilibrium position, together with a single-phase induction motor whose rotor is coupled to the shaft so as to enable oscillations of the shaft to be sustained. According to the invention, the stator of the single-phase induction motor is fed with an alternating drive signal whose frequency is adjusted to the vicinity of the natural frequency of oscillation of the mechanical device. More particularly, the frequency of the drive signal of the stator is set to lie in the frequency range �f-0.8 Hz; f+0.1 Hz!, where f represents the natural frequency of oscillation of the mechanical device, and is preferably set to the natural frequency of oscillation of the mechanical device with a tolerance of plus or minus one-tenth of one hertz. The device is applicable to card web combs used in the textile industry.
摘要翻译:振荡机械装置包括一个轴,振动件安装在该轴上,并且与其转子耦合到轴的单相感应电动机一起弹性地推向中间角度平衡位置,以便能够使轴的振动 要持续下去 根据本发明,单相感应电动机的定子馈送有一个交替的驱动信号,其频率被调节到机械装置的固有振荡频率附近。 更具体地说,定子的驱动信号的频率被设定在频率范围[f-0.8Hz; f + 0.1Hz],其中f表示机械装置的固有振荡频率,并且优选地被设置为机械装置的固有振荡频率,其容限为正或负十进一赫兹。 该设备适用于纺织工业中使用的卡片梳棉梳。
摘要:
A regulating apparatus for obtaining a uniform sliver delivered by a carding machine includes an rpm setter connected to a roller drive of the carding machine for determining an operational speed for the drive, a signal generator for producing a first signal as a function of actual properties of the sliver and a PI-regulator having a component determining a regulating time constant. The PI-regulator is connected to the signal generator for receiving the first signal and for generating a second, regulating signal. Further, the PI-regulator is connected to the drive for applying the second signal thereto. A regulating time constant setter is operatively connected to the component which determines a regulating time constant. The rpm setter and the regulating time constant setter cooperate for adjusting the regulating time constant setter as a function of adjustments of the rpm setter, whereby the regulating time constant of the PI-regulator is varied as a function of the rpm of the fiber-engaging roller.