Electric sewing machine motor control device
    32.
    发明授权
    Electric sewing machine motor control device 失效
    电动缝纫机马达控制装置

    公开(公告)号:US4749923A

    公开(公告)日:1988-06-07

    申请号:US38183

    申请日:1987-04-14

    Applicant: Yu S. Chieng

    Inventor: Yu S. Chieng

    CPC classification number: D05B69/22

    Abstract: A motor control device provided on an electric sewing machine comprising a brushless permanent-magnet motor and in combination with a magnetic pole sensor, rotational-speed and rotational-speed polarity detector for sewing machine, detectors for needle-position and needle positioning signal, and the control systems of speed and needle stagnation thereof; with the specific ways of controlling the needle stagnant position and the strength of the reverse current for braking the motor, simple structure, less power wastage and no wearable friction clutch and brake device are needed, a quick sewing machine starting, quick stabilizing of speed control and precise stagnation of the sewing needle at a preset position can be achieved.

    Abstract translation: 一种设置在电动缝纫机上的电动机控制装置,包括无刷永磁电动机,与磁极传感器,缝纫机的转速和转速极性检测器,针位置和针定位信号的检测器,以及 速度和针停滞的控制系统; 具体的方法是控制针停滞位置和反向电流强度,制动电机,结构简单,耗电少,无需摩擦离合器和制动装置,快速缝纫机启动,速度控制快速稳定 可以实现缝纫针在预定位置的精确停滞。

    Image forming system
    33.
    发明授权
    Image forming system 失效
    图像形成系统

    公开(公告)号:US4739231A

    公开(公告)日:1988-04-19

    申请号:US8133

    申请日:1987-01-22

    CPC classification number: G03G15/041 G05B19/108

    Abstract: There is provided a moving body control device comprising a motor for driving a moving body, detector for detecting the speed of the motor, memory for storing a program for the phase comparison control of the speed of the motor, and control means for controlling the motor according to said program by inputting the output from the detector.

    Abstract translation: 提供了一种移动体控制装置,包括用于驱动移动体的马达,用于检测马达的速度的检测器,用于存储用于马达的速度的相位比较控制的程序的存储器,以及用于控制马达的控制装置 根据所述程序,通过输入来自检测器的输出。

    Sewing machine driving apparatus
    34.
    发明授权
    Sewing machine driving apparatus 失效
    缝纫机驱动装置

    公开(公告)号:US4692676A

    公开(公告)日:1987-09-08

    申请号:US798279

    申请日:1985-11-04

    CPC classification number: D05B69/26 H02K29/06 H02P6/06

    Abstract: The present invention provides a machine driving apparatus which is composed of a brushless motor for switching the energization phase of the stator winding in accordance with the position of a rotor with a permanent magnet being provided in a rotor as a machine driving motor, compares a speed instructing signal to be generated from a speed instructing unit 32 in accordance with the displacement amount of a machine pedal 31 with a speed detecting signal detected by a speed detector 44 to control the rotational speed of a motor 42, also damps in reverse operation the motor 42 with a stop instructing signal to be generated by a position instructing unit 33 in accordance with the operation of the machine pedal 31 and a needle position detecting signal detected by a needle position detector 46 to stop the machine needle in a given position.

    Abstract translation: PCT No.PCT / JP85 / 00087 Sec。 371日期:1985年11月4日 102(e)1985年11月4日日期PCT提交1985年2月26日PCT公布。 公开号WO85 / 03958 1985年9月12日,本发明提供一种机器驱动装置,其由无刷电动机构成,该无刷电动机根据转子的位置切换定子绕组的通电相,永久磁铁设置在转子中作为 机器驱动电动机根据速度检测器44检测的速度检测信号,根据机械踏板31的位移量,比较从速度指示部32生成的速度指示信号,以控制电动机42的转速, 还可以根据机械踏板31的操作和由针位置检测器46检测到的针位置检测信号,使马达42反转操作,停止指示信号由位置指示单元33产生,以停止机针 在给定的位置。

    Anti-plug reversing module
    35.
    发明授权
    Anti-plug reversing module 失效
    防插拔换向模块

    公开(公告)号:US4628232A

    公开(公告)日:1986-12-09

    申请号:US737698

    申请日:1985-05-28

    CPC classification number: H02P3/10 H02P7/03

    Abstract: An anti-plug reversing circuit for use with a variable speed D.C. motor which provides safe and fast motor reversing with dynamic braking. The circuit, by sensing counter-EMF, prevents the premature application of a voltage of opposite (reversing) polarity until the motor armature has come to a full stop. The circuit advantageously utilizes a three-wire control input, is low cost, easily manufactured and applicable for use with low cost D.C. motors.

    Abstract translation: 一种用于可变速直流电动机的防插头反向电路,可通过动态制动提供安全快速的电机反转。 该电路通过感应反电动势,防止过早施加相反(反转)极性的电压,直到电机电枢达到完全停止。 该电路有利地利用三线控制输入,成本低,易于制造并适用于低成本直流电动机。

    Plugging electrical braking control circuit
    36.
    发明授权
    Plugging electrical braking control circuit 失效
    堵塞电气制动控制电路

    公开(公告)号:US4518902A

    公开(公告)日:1985-05-21

    申请号:US455776

    申请日:1983-01-05

    Abstract: The invention pertains to a control system (46) for controlling the supply of power to a motor (12) to produce plugging electrical braking and current limit control, including a circuit (60) for controlling the direction of energization of the motor (12), a circuit (88) for generating digital numbers representing command motor speeds, a circuit (14) for generating a data signal representing a plugging condition, a programmable data processor (18) for generating pulse trains in dependence on the plugging condition, and a power transistor element (40) for coupling power to the motor (12) in response to the pulse trains. By using state-of-the-art digital, integrated circuit and software technology, prior, essentially linear or discrete component technology, which is relatively unreliable, expensive and slow, need not be used.

    Abstract translation: 本发明涉及一种控制系统(46),用于控制向马达(12)供电以产生堵塞电气制动和限流控制,包括用于控制马达(12)通电方向的电路(60) ,用于产生表示指令电机速度的数字数字的电路(88),用于产生表示封堵状态的数据信号的电路(14),用于根据封堵条件产生脉冲串的可编程数据处理器(18),以及 功率晶体管元件(40),用于响应于脉冲串将功率耦合到电动机(12)。 通过使用最先进的数字,集成电路和软件技术,不需要使用相对不可靠,昂贵和缓慢的先前的,基本上线性或分立的组件技术。

    Plugging control
    37.
    发明授权
    Plugging control 失效
    堵塞控制

    公开(公告)号:US4068153A

    公开(公告)日:1978-01-10

    申请号:US626503

    申请日:1975-10-28

    CPC classification number: H02P3/10

    Abstract: A plugging control circuit in a silicon controlled rectifier (SCR) control for a series-connected direct-current vehicle-propulsion motor. The plugging control prevents the main SCR from pulsing when plug current is high, restarts the SCR pulsing when the plug current decays but with a reduced pulse width, and delays application of power through the main SCR for a time to allow the vehicle to first come to a halt before power is applied to move the vehicle in the opposite direction.

    Abstract translation: 一种用于串联连接的直流车辆推进电机的可控硅整流器(SCR)控制中的堵塞控制电路。 当插头电流高时,插拔控制可防止主SCR脉冲发生,当插头电流衰减但脉冲宽度减小时重新启动SCR脉冲,并延迟通过主SCR施加电源一段时间以允许车辆先到 在施加电力以在相反方向上移动车辆之前停止。

    Motor angular velocity monitor circuit
    38.
    发明授权
    Motor angular velocity monitor circuit 失效
    电机角速度监控电路

    公开(公告)号:US4054819A

    公开(公告)日:1977-10-18

    申请号:US631451

    申请日:1975-11-13

    CPC classification number: H02P3/10 H02P7/05

    Abstract: A circuit for controlling the operation of a bi-directional motor. A motor energized to run in one direction is stopped by applying a reverse or braking current to its energizing field. When the motor is virtually stopped, means are provided to de-energize the motor to prevent the motor from reversing direction.

    Abstract translation: 用于控制双向电动机的操作的电路。 通过向其通电场施加反向或制动电流来停止沿一个方向运行的电动机。 当电动机实际上停止时,提供装置以使电动机断电以防止电动机反向。

    Separately excited D.C. motors
    39.
    发明授权
    Separately excited D.C. motors 失效
    单独激发直流电动机

    公开(公告)号:US4042865A

    公开(公告)日:1977-08-16

    申请号:US488255

    申请日:1974-07-12

    Applicant: David Gurwicz

    Inventor: David Gurwicz

    CPC classification number: H02P3/10 H02P7/2825 Y10S388/902 Y10S388/917

    Abstract: A separately excited speed-controlled D.C. motor which has constant armature current and pulse-controlled field current has its armature connected by way of a bridge rectifier and an inductor to an A.C. source of substantially greater r.m.s. voltage than the rated supply voltage of the armature, the inductor serving to regulate the armature current. The field winding is connected to a field excitation supply and to a thyristor chopper and the mean current through the field winding controlled by the thyristor chopper thereby to control the armature torque and therefore the speed. The field winding may comprise two field coils arranged to produce opposing magnetic fields, the thyristor chopper serving to control the net magnitude and direction of the motor field. A thyristor chopper may be provided in the armature circuit to maintain a constant armature current during plugging of the motor.

    Abstract translation: 具有恒定电枢电流和脉冲控制励磁电流的单独激发的速度控制的直流电动机其电枢通过桥式整流器和电感器连接到具有大得多的r.m.s.的交流电源。 电压高于电枢额定电源电压,电感用于调节电枢电流。 励磁绕组连接到场励磁电源和晶闸管斩波器,并且通过由晶闸管斩波器控制的励磁绕组的平均电流,从而控制电枢扭矩并因此控制速度。 励磁绕组可以包括布置成产生相对的磁场的两个励磁线圈,晶闸管斩波器用于控制电动机磁场的净大小和方向。 可以在电枢电路中设置晶闸管斩波器,以在电动机堵塞期间保持恒定的电枢电流。

    Claw mechanism
    40.
    发明授权
    Claw mechanism 失效
    爪机制

    公开(公告)号:US4003647A

    公开(公告)日:1977-01-18

    申请号:US610327

    申请日:1975-09-04

    CPC classification number: H02P3/10 G03B1/22 H02P7/05

    Abstract: A claw mechanism for the transport of a film in a film projector. A claw arm is disposed parallel to the transport path and pivotable about an axis transverse to the direction of transport; a claw means is disposed substantially transverse to the transport path, pivotally connected to the free end of the claw arm about an axis transverse to the direction of transport; and a drive shaft disposed parallel to said two axes, which rotates continuously during operation, comprises a crank which engages a slot in the claw means. A cam follower, pivotally connected to the free end of the claw arm about an axis parallel to the direction of transport, is pressed against one of two cams on the drive shaft by spring force and is connected to the electromagnetic control means for engagement alternatively with a first cam for keeping the film perforations out of engagement with the claw means, or a second cam for intermittently advancing the film by one frame per revolution to control the movements of the claw arm and thus the speed of film transport.

    Abstract translation: 用于在胶片投影仪中传送胶片的爪机构。 爪臂平行于传送路径设置,并可围绕横向于传送方向的轴线转动; 爪装置基本上横向于传送路径设置,枢转地连接到爪臂的自由端围绕横向于传送方向的轴线; 以及平行于所述两个轴线设置的驱动轴,其在操作期间连续地旋转,包括与所述爪装置中的狭槽接合的曲柄。 枢轴连接到爪臂的自由端围绕平行于运输方向的轴线被弹簧力压在驱动轴上的两个凸轮中的一个凸轮上,并且连接到电磁控制装置以与 用于保持胶片穿孔不与爪装置接合的第一凸轮,或用于间歇地使胶片每转一帧地前进一次的第二凸轮,以控制爪臂的移动,从而控制胶片运送的速度。

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