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1.发明授权Sewing machine with reference speed correction by dimensional ratio between motor- and armshaft-pulleys 失效缝纫机通过马达与臂轴皮带轮之间的尺寸比进行基准速度校正
公开(公告)号：US4676180A
公开(公告)日：1987-06-30
申请号：US861720
申请日：1986-05-12
Applicant: Shigeo Neki , Kenichi Ohara , Nobuho Shibata , Takashi Dohi
Inventor： Shigeo Neki , Kenichi Ohara , Nobuho Shibata , Takashi Dohi
IPC: G05B19/416 , D05B69/18
CPC classification number: G05B19/416 , G05B2219/41358
Abstract: A sewing machine comprises a multiplier for multiplying an operator-controlled variable reference speed value by a multiplying factor, a tachogenerator for generating speed-related pulses at a rate proportional to the speed of rotation of a motor pulley and an angular position detector for generating a position pulse in response to a predetermined position of an armshaft pulley which is coupled by a belt to the motor pulley. A ratio detector is provided for counting the speed-related pulses present during the interval between successive ones of the position pulse to generate a count as a representation of the diameter of the armshaft pulley and deriving a ratio value between the count and a value representative of the diameter of the motor pulley. The ratio value is applied to the multiplier as the multiplying factor to alter the reference speed value. A speed control circuit is responsive to the speed-related pulses for deriving an actual motor speed value and controls the speed of the motor in accordance with a difference between the actual motor speed value and the altered reference speed value.
Abstract translation: 一种缝纫机包括乘法器，用于将操作者控制的可变参考速度值乘以乘数，转速发生器，用于以与马达皮带轮的旋转速度成比例的速率产生速度相关脉冲;以及角位置检测器，用于产生 响应于通过带与电动机皮带轮联接的臂轴滑轮的预定位置的位置脉冲。 提供了一种比率检测器，用于对连续的位置脉冲之间的间隔期间存在的速度相关脉冲进行计数，以产生计数作为臂轴皮带轮的直径的表示，并导出计数与代表 电机皮带轮的直径。 比值被用作乘法器，作为改变参考速度值的乘法因子。 速度控制电路响应于速度相关的脉冲以导出实际的电动机速度值，并且根据实际电动机速度值和改变的参考速度值之间的差来控制电动机的速度。
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公开(公告)号：US4914371A
公开(公告)日：1990-04-03
申请号：US939875
申请日：1986-12-09
Applicant: Nobuho Shibata , Takashi Dohi , Kenichi Ohara
Inventor： Nobuho Shibata , Takashi Dohi , Kenichi Ohara
IPC: H02P25/02
CPC classification number: H02P25/03
Abstract: In apparatus for controlling the rotational speed of a synchronous motor arranged to be driven by an inverter having switches for selectively energizing respective windings of the motor, a current detector is provided to an input of the inverter for detecting input current to the inverter to thereby interrupt energization of the switches by using an output of a first timer circuit when the current exceeds a predetermined value, and a second timer circuit is provided for interrupting energization of the switches on switching between respective phases of the motor. An interrupting time duration by the second timer circuit may be varied in accordance with the rotational speed of the motor and by the plugging state thereof.
Abstract translation: 在用于控制由具有用于选择性地激励电动机的各个绕组的开关的逆变器驱动的同步电动机的转速控制装置中，向逆变器的输入端提供电流检测器，用于检测到逆变器的输入电流，从而中断 当电流超过预定值时，通过使用第一定时器电路的输出使开关通电，并且提供第二定时器电路，用于在电动机的各相之间切换时中断开关通电。 通过第二定时器电路的中断持续时间可以根据电动机的转速和其堵塞状态而变化。
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公开(公告)号：US4692676A
公开(公告)日：1987-09-08
申请号：US798279
申请日：1985-11-04
Applicant: Takashi Dohi , Nobuho Shibata , Kenichi Ohara
Inventor： Takashi Dohi , Nobuho Shibata , Kenichi Ohara
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。
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公开(公告)号：US4732099A
公开(公告)日：1988-03-22
申请号：US926532
申请日：1986-11-04
Applicant: Shigeo Neki , Kenichi Ohara , Nobuho Shibata , Takashi Dohi
Inventor： Shigeo Neki , Kenichi Ohara , Nobuho Shibata , Takashi Dohi
CPC classification number: D05B69/26
Abstract: A motor controller for a sewing machine starts to count the number of pulse signals issued during rotation of a motor after reception of a stop signal and the detection of the needle position, and thereby sets a speed value for controlling the rotation speed of the motor so that it gradually slows based on the result of the counting of the pulse signals and so that the rotation speed of the motor goes to zero when it reaches a predetermined low value.
Abstract translation: 用于缝纫机的电动机控制器开始计数在接收到停止信号和针位置的检测之后在电动机旋转期间发出的脉冲信号的数量，从而设定用于控制电动机的转速的速度值 基于脉冲信号的计数结果逐渐减慢，并且当达到预定的低值时，电动机的转速变为零。
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Patent Agency Ranking
公开(公告)号：US4682095A
公开(公告)日：1987-07-21
申请号：US876913
申请日：1986-06-20
Applicant: Nobuho Shibata , Isamu Yasunobu , Shigeo Neki , Kenichi Ohara , Takashi Dohi
Inventor： Nobuho Shibata , Isamu Yasunobu , Shigeo Neki , Kenichi Ohara , Takashi Dohi
CPC classification number: H02P1/26
Abstract: In a motor control apparatus arranged to drive a motor by rectifying a.c. voltage and smoothing a rectified voltage by a capacitor, a voltage across the capacitor is detected to see if the voltage is below a reference voltage or not by a first comparator (24), and if so, an output voltage (V) is produced. This output voltage (V) is used to change another reference voltage of another comparator (21) used for detecting if current to the motor (5) or a motor drive circuit (4) is greater than the reference. When the current is larger than the reference, the comparator (21) produces a low level output causing a control circuit (23) to control the drive circuit (4) to reduce the current to motor (5).
Abstract translation: 在电动机控制装置中，通过对交流电进行整流来驱动电动机。 通过电容器对整流电压进行电压和平滑化，检测电容器两端的电压，以便通过第一比较器（24）检查电压是否低于参考电压，如果是，则产生输出电压（V）。 该输出电压（V）用于改变用于检测到电动机（5）或电动机驱动电路（4）的电流是否大于参考值的另一个比较器（21）的另一参考电压。 当电流大于参考值时，比较器（21）产生低电平输出，使得控制电路（23）控制驱动电路（4）以减小电动机（5）的电流。
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公开(公告)号：US4691653A
公开(公告)日：1987-09-08
申请号：US926534
申请日：1986-11-04
Applicant: Shigeo Neki , Kenichi Ohara , Nobuho Shibata , Takashi Dohi
Inventor： Shigeo Neki , Kenichi Ohara , Nobuho Shibata , Takashi Dohi
CPC classification number: D05B69/22
Abstract: In a control device for a sewing machine control apparatus wherein an electric motor generates a reverse torque against a torque due to a load on the sewing machine in abeyance state, to hold a sewing needle in an upper or a lower position, the reverse torque reaches a maximum value by a known feedback system at its turn to a predetermined revolution angle. The control apparatus is devised such that, when it is further turned in excess of the predetermined revolution angle, the reverse torque falls to zero, hence the driving motor remains at the position turned to the predetermined revolution angle.
Abstract translation: 在缝纫机控制装置的控制装置中，电动马达产生相对转矩的逆转矩，由于在垂直状态下的缝纫机上的负荷引起的扭矩，将缝纫针保持在上下位置时，反转扭矩达到 通过已知的反馈系统在一个预定的旋转角度下的最大值。 控制装置被设计为当进一步转动超过预定转角时，反向扭矩下降到零，因此驱动电机保持在转到预定转角的位置。
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公开(公告)号：US4710688A
公开(公告)日：1987-12-01
申请号：US877425
申请日：1986-06-23
Applicant: Shigeo Neki , Kenichi Ohara , Nobuho Shibata , Takashi Dohi
Inventor： Shigeo Neki , Kenichi Ohara , Nobuho Shibata , Takashi Dohi
CPC classification number: D05B69/18 , Y10S388/912
Abstract: In a sewing machine, a variable speed setting device generates a variable reference speed signal which is applied to a controller. A tachogenerator produces speed pulses at a frequency proportional to the speed of a motor which drives a needle armshaft. The speed pulses are counted during the interval between successive ones of low-frequency clock pulses and a first actual speed signal proportional to the speed of rotation of the motor is derived from the count. High-frequency clock pulses are counted during the interval between successive ones of the speed pulses and a second actual speed signal proportional to the speed of rotation of the motor is derived from the count. The first actual speed signal is enabled when the reference speed signal is higher than a predetermined value and the second actual speed signal enabled when the reference speed signal is lower than the predetermined value. The controller responds to the enabled signal by controlling the speed of the motor so that the enabled signal substantially equals the reference speed signal.
Abstract translation: 在缝纫机中，变速设定装置生成适用于控制器的可变基准速度信号。 测速发电机以与驱动针臂的电机的速度成比例的频率产生速度脉冲。 在连续的低频时钟脉冲之间的间隔期间对速度脉冲进行计数，并且从计数导出与电动机的转速成比例的第一实际速度信号。 在连续的速度脉冲之间的间隔期间对高频时钟脉冲进行计数，并且从计数得出与电动机的转速成比例的第二实际速度信号。 当基准速度信号高于预定值时，第一实际速度信号被使能，而当基准速度信号低于预定值时，第二实际速度信号使能。 控制器通过控制电机的速度来响应使能信号，使得使能信号基本上等于参考速度信号。
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公开(公告)号：US4761599A
公开(公告)日：1988-08-02
申请号：US34425
申请日：1987-04-24
Applicant: Isamu Yasunobu , Kenichi Ohara , Nobuho Shibata , Shigeo Neki
Inventor： Isamu Yasunobu , Kenichi Ohara , Nobuho Shibata , Shigeo Neki
Abstract: This invention relates to a motor controller which is so arranged that voltage to be applied to drive windings of a synchronous motor (1) is switched by a plurality of switching elements of a power inverter circuit (4), while the current supply amount to the switching elements is controlled based on pulse width-modulated signals, and which is provided, at a distributing section for selecting energization of said switching elements, with a first logic circuit for applying the pulse width modulation only to the predetermined switching selected from among the switching elements selected during forward rotation of the motor, and a second logic circuit for applying the pulse width modulation to all of the switching elements selected during the reverse rotation of the motor, so as to thereby effect the reduction of electro-magnetic noise during the forward rotation, and to effect the suppression of current during the reverse rotation.
Abstract translation: PCT No.PCT / JP86 / 00353 Sec。 371日期1987年3月16日 102（e）日期1987年4月24日PCT申请1986年7月11日PCT公布。 公开号WO87 / 00705 日期：1987年1月29日。本发明涉及一种电动机控制器，该电动机控制器被布置为通过电力逆变器电路（4）的多个开关元件来切换施加到同步电动机（1）的驱动绕组的电压， 而基于脉宽调制信号控制对开关元件的电流供给量，并且在用于选择所述开关元件的通电的分配部分设置有用于将脉冲宽度调制仅施加到第一逻辑电路的第一逻辑电路 从在电动机的正转期间选择的开关元件中选择的预定开关，以及用于对电动机的反向旋转期间选择的所有开关元件施加脉宽调制的第二逻辑电路，从而实现 正向旋转期间的电磁噪声，并且在反向旋转期间实现电流的抑制。
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公开(公告)号：US4095166A
公开(公告)日：1978-06-13
申请号：US750975
申请日：1976-12-15
Applicant: Nobuho Shibata , Tutomu Seri , Norio Umezawa , Takeshi Morofuji
Inventor： Nobuho Shibata , Tutomu Seri , Norio Umezawa , Takeshi Morofuji
CPC classification number: H02M3/10
Abstract: Disclosed is a variable DC voltage device wherein one terminal of a DC power supply, a switch, a first coil of a transformer, a second coil mounted on a core of the transformer with the same polarities with those of the first coil, a diode for preventing a shortcircuiting of the DC power supply when the switch is closed and the other terminal of the DC power supply are connected in series in the order named; a load is interconnected between the junction between the first and second coils and the other terminal of the power supply; and a compensation circuit is provided for restoring to an initial state the flux variation caused when the switch is closed, whereby the load is controlled by the alternate opening and closing of the switch.
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