公开(公告)号：US4094385A

公开(公告)日：1978-06-13

申请号：US677071

申请日：1976-04-14

申请人： Yasuyuki Maeda ,  Nobuo Mitsui ,  Tadao Kameyama ,  Katsu Komuro

发明人： Yasuyuki Maeda ,  Nobuo Mitsui ,  Tadao Kameyama ,  Katsu Komuro

IPC分类号： B66B1/36 ,  B66B1/16 ,  B66B1/24 ,  B66B1/28 ,  B66B1/30 ,  B66B1/40 ,  B66B1/50

CPC分类号： B66B1/50 ,  B66B1/285 ,  B66B1/308 ,  B66B1/40 ,  Y02B50/125

摘要： In an a-c elevator, an elevator car suspended by ropes is driven by an induction motor for vertical movement. A system commonly used for controlling the device including thyristors connected in parallel with opposite polarities across a three-phase a-c power source and the induction motor for controlling the motoring torque produced by the induction motor, a bridge rectifier including a thyristor for supplying direct current to the induction motor for controlling the braking torque produced by the induction motor, and means for controlling the operating phase of the thyristors in the thyristor device and the thyristor in the bridge rectifier depending on the error between the instructed speed and the actual speed of the elevator car. When the elevator car stops at a target floor and passengers get on and off the elevator car, the variation in the load of the elevator car results in an increase or decrease in the length of the ropes thereby giving rise to an error between the floor level of the target floor and that of the elevator car. A levelling apparatus is provided which comprises a position detector detecting this level error in either direction, and a level correction speed pattern signal generator generating a level correction speed pattern signal in response to the appearance of an output from the position detector, so that the operating phase of the thyristors in the thyristor device and the thyristor in the bridge rectifier can be controlled depending on the error between the level correction speed pattern and the actual speed of the elevator car.

摘要翻译： 在a-c电梯中，由绳索悬挂的电梯轿厢由用于垂直运动的感应电动机驱动。 一种通常用于控制包括跨三相交流电源并联连接的晶闸管的装置和用于控制由感应电动机产生的电动转矩的感应电动机的系统，包括用于将直流供电的晶闸管的桥式整流器 用于控制由感应电动机产生的制动转矩的感应电动机，以及用于根据指示速度和电梯的实际速度之间的误差来控制桥式整流器中的晶闸管装置和晶闸管中的晶闸管的操作相位的装置 汽车。 当电梯轿厢停在目标楼层并且乘客上下电梯轿厢时，电梯轿厢的负载变化导致绳索长度的增加或减少，从而导致楼层等级之间的误差 的目标楼层和电梯轿厢的。 提供一种调平装置，其包括位置检测器，以检测任一方向上的该电平误差;以及电平校正速度模式信号发生器，响应于来自位置检测器的输出的出现而产生电平校正速度模式信号，使得操作 晶闸管装置中的晶闸管的相位和桥式整流器中的晶闸管可以根据电平校正速度模式和电梯轿厢的实际速度之间的误差来控制。

公开(公告)号：US4101819A

公开(公告)日：1978-07-18

申请号：US645344

申请日：1975-12-30

申请人： Yasuyuki Maeda ,  Nobuo Mitsui ,  Tadao Kameyama ,  Akinori Watanabe ,  Katsu Komuro ,  Sadao Hokari

发明人： Yasuyuki Maeda ,  Nobuo Mitsui ,  Tadao Kameyama ,  Akinori Watanabe ,  Katsu Komuro ,  Sadao Hokari

IPC分类号： G05F1/10 ,  G05F1/445 ,  G05F1/455 ,  H02M1/08 ,  H02M5/253 ,  H02P27/02 ,  G05F3/04

CPC分类号： H02M5/253 ,  G05F1/445 ,  G05F1/455 ,  Y10S323/91

摘要： In a three phase load controlling system two bilateral switching circuits control the current in the first and the third phases; the first phase is later than the third. The second phase is uncontrolled. The gating signals applied to the bilateral switching arrangement connected in the first phase are advanced by a constant degree with respect to the voltage of the first phase. The gating signals applied to the bilateral switching arrangement connected in the third phase are synchronized with the voltage of the third phase.

公开(公告)号：US4150734A

公开(公告)日：1979-04-24

申请号：US871801

申请日：1978-01-24

申请人： Takeshi Ohira ,  Tadao Kameyama ,  Chihiko Honzyo ,  Yuzaburo Iwasa ,  Takanobu Hatakeyama

发明人： Takeshi Ohira ,  Tadao Kameyama ,  Chihiko Honzyo ,  Yuzaburo Iwasa ,  Takanobu Hatakeyama

IPC分类号： B66B1/16 ,  B66B1/24 ,  B66B1/34 ,  B66B1/30

CPC分类号： B66B1/3492 ,  B66B1/285

摘要： An elevator car control apparatus is disclosed in which a three-phase AC tachometer generator is coupled to a motor for driving an elevator car, and the AC output of the tachometer generator is full-wave rectified for use as a speed feedback voltage. A waveform-shaping circuit generates one pulse for each cycle of the output of the AC tachometer generator. A counter counts such pulses after the car has passed a deceleration-initiating point, thereby producing the number of counts proportional to a car running distance after the passage of the deceleration-initiating point. From this number of counts, a deceleration command voltage decreasing progressively in accordance with car positions is obtained by a decoder and a digital-analog converter. During deceleration, the car-drive motor is subjected to feedback control in accordance with the difference between the speed feedback voltage and the deceleration command voltage, thus effecting deceleration control of the elevator car.

摘要翻译： 公开了一种电梯轿厢控制装置，其中三相交流转速计发生器耦合到用于驱动电梯轿厢的电动机，并且转速计发生器的交流输出被全波整流用作速度反馈电压。 波形整形电路为交流转速计发生器的输出的每个周期产生一个脉冲。 在汽车通过减速起始点之后，计数器对这样的脉冲进行计数，从而产生与减速起始点通过之后的轿厢行驶距离成比例的计数。 从该数量的计数，通过解码器和数模转换器获得根据轿厢位置逐渐减小的减速指令电压。 在减速期间，根据速度反馈电压和减速指令电压之间的差异对轿厢驱动电动机进行反馈控制，从而进行电梯轿厢的减速控制。