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公开(公告)号：EP0201793A3
公开(公告)日：1988-04-27
申请号：EP86105836
申请日：1986-04-28
发明人： Arita, Yoji
摘要： A motor comprises magnetic poles constituted by a permanent magnet magnetized in its radial direction and a core having salient poles placed inside or outside the magnetic poles wherein the magnetic flux distribution of the permanent magnet is controlled so that the cogging torque characteristic of the motor is rendered to be a specified condition.
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2.发明公开
公开(公告)号：EP0177051A3
公开(公告)日：1987-07-01
申请号：EP85112594
申请日：1985-10-04
申请人： PITNEY BOWES INC.
CPC分类号： G07B17/00508 , G07B17/00467 , G07B2017/00322 , G07B2017/00548
摘要： In printing apparatus including means (464,465) for changing a value to be printed and means (470) for selecting a value to be printed, wherein the value changing means includes a plurality of banks (460,464), each of the banks includes a print wheel (464) having a plurality of print elements (465), and wherein the value selection means includes means (472) for selecting each bank and means (476,480) for selecting each print element (465) of a selected bank, and means (120) for driving the bank and print element selection means, wherein the driving means includes an output shaft (122), and means for selectively coupling the output shaft to the bank and print element selection means (470), an improvement for controlling the value selection means, the improvement comprising: the driving means including a d.c. motor (120) having the output shaft (122); means (126) for sensing angular displacement of the motor output shaft; a computer (500) comprising clock means for generating successive sampling time periods, means for providing first counts respectively representative of successive desired angular displacements of the motor output shaft (122) during successive sampling time periods, means (270) responsive to the sensing means (126) for providing second counts respectively representative of actual angular displacements of the motor output shaft (122) during successive sampling time periods, and means for compensating for the difference between the first and second counts during each successive sampling time period and generating a pulse width modulated control signal for controlling the d.c. motor (120), the motor control signal causing the actual angular displacement of the motor output shaft (122) to substantially match the desired angular displacement of the motor output shaft during successive sampling time periods; and signal amplifying means (300) for operably coupling the motor control signal to the d.c. motor (120).
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公开(公告)号：EP0113529A3
公开(公告)日：1986-02-12
申请号：EP83307298
申请日：1983-11-30
发明人： Sakurai, Shigeo
IPC分类号： H02P08/00
CPC分类号： F02D11/10 , F02D2011/102 , H02P8/22
摘要： A drive control method for stepping motors in which a rotor is made to repeatedly actuate in a period of the sum of a stationary time after one rotation step and a stationary time after the following one rotation step, in order to enable to obtain substantially smaller angular displacement of the rotor than the predetermined unit rotation angle.
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公开(公告)号：EP0049948A3
公开(公告)日：1982-12-01
申请号：EP81304127
申请日：1981-09-09
发明人： Lewis, Martyn A.
CPC分类号： G11B21/081
摘要： A control system for a stepper motor utilized in positioning a transducer (18) in relationship to a plurality of parallel tracks (14, 16) on a record media (10). Dual closed loop feedback systems are provided. A current control circuit is provided having a high output impedance and a voltage control circuit is provided having a low output impedance. A switch (30) may select the current control sensor (28) when the transducer (18) is making coarse adjustments in position and may select the voltage control sensor (32) when the transducer (18) is making fine adjustments in position. A seamless switchover may be achieved where the voltage control sensor (32) has a time constant which matches the time constant of the stepper motor. Performance is further improved by providing an impedance cancellation circuit (252, 254, 256, 258, 260, 262) which eliminates the internal resistance of the motor in order to quickly damp motionally induced emf of the motor.
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公开(公告)号：EP0046722A3
公开(公告)日：1982-11-17
申请号：EP81630047
申请日：1981-08-03
IPC分类号： H02P08/00
CPC分类号： H02P8/34
摘要： The response of a stepper motor to the energizing of the motor's stator windings by excitation signals presented in each motor step interval, is detected by measuring the amplitude of the voltage signal induced in a non-energized stator winding as a result of the presentation of the excitation signals to the energized stator windings.
摘要翻译： 通过测量在无电定子绕组中产生的电压信号的振幅，由步进电动机对每个电动机步进间隔中呈现的激励信号激励电动机定子绕组的响应， 激励信号给激励的定子绕组。
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公开(公告)号：EP0200959A3
公开(公告)日：1987-12-16
申请号：EP86105141
申请日：1986-04-15
申请人： HITACHI, LTD.
IPC分类号： H02P08/00
CPC分类号： H02P8/32
摘要： It takes a comparatively long time (T s 1 ) for a rotor of a stepping motor (100) to be positioned at the next target stop position (target angular position) and stopped there. This time is the settling time. Before the rotor passes through the next target angular position and begins to oscillate, necessary Icontrol means is taken to reduce the width of the oscillation for the purpose of shortening the settling time. The phase excitation on each winding (φ 1 , φ 2 ) of the stepping motor is usually changed over successively until the target angular position is reached. When the stepping motor has approached the target angular position, the changeover of phase excitation is gradually conducted. As a result, the width of the above described oscillation is reduced and hence the settling time is shortened.
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7.发明公开Recognition method for step losses of stepping motor-driven regulating devices 失效用于步进电机驱动调节装置的步骤损失的识别方法
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8.发明公开Process for optimizing the couple of a polyphase motor, in particular of the stepping kind, and application of this process 失效优化多相电机的联轴器，特别是步进电机的方法以及本方法的应用
公开(公告)号：EP0142465A3
公开(公告)日：1985-06-19
申请号：EP84810441
申请日：1984-09-10
发明人： Antognini, Luciano
IPC分类号： H02P08/00
CPC分类号： H02P8/14
摘要： Le procédé consiste à appréhender l'évolution des tensions induites par la movement du rotor dans les différentes phases statoriques et à alimenter les phases dudit moteur en fonction de ces mesures, de sorte que, dans chaque phase, l'angle de déphasage entre le premier harmonique du courant produit par la source d'alimentation et la tension induite corresponde à une valeur optimale.
Le dispositif pour la mise en oeuvre de ce procédé comporte des circuits de mesure des tensions induites dans les phases et des circuits permettant d'imposer dans lesdites phases des courants dont la phase du premier harmonique correspond à une valeur optimale.摘要翻译： 该过程包括感知由各种定子相位中的转子运动引起的电压的变化，以及作为这些测量的函数对所述电动机的相位供电，使得在每个相位中，相移角 在由电源产生的电流的一次谐波与感应电压之间对应于最佳值。 用于施加该过程的装置包括用于测量在相中感应的电压的电路和允许在所述相中施加电流的电路，其一次谐波的相位对应于最佳值。
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公开(公告)号：EP0048405A3
公开(公告)日：1982-12-01
申请号：EP81107129
申请日：1981-09-10
发明人： Cattoni, Roberto
IPC分类号： H02P08/00
CPC分类号： H02P8/12
摘要： A driving circuit for a four phases (1, 2, 3, 4) step motor, where each stable rotor position is reached by suitably energizing the series of two of the four phases, comprises a circuit (22) which controls the current in the energized phases by comparing a current related signal with a reference signal. Particularly, such circuit disconnects the series of two phases from the power supply and ground when the energization current reaches a predetermined upper threshold value and connect it again to the power supply and ground when the energization current, which is maintained in the phases through recycle diodes (9, 10, 11, 12), falls below a predetermined lower threshold value. In such way the energization current within the phases is kept nearly constant and this reduces to a minimum the winding copper losses, under the same mechanical performances. The cross configuration of the windings, with a current sensor (19) in the center of the cross, further enables to reduce to a minimum number the components of the control circuits.
摘要翻译： 用于四相（1,2,3,4）步进电动机的驱动电路，其中通过适当地激励四相中的两个相的一系列来达到每个稳定的转子位置，包括控制电流的电路（22） 通过将电流相关信号与参考信号进行比较来实现通电阶段。 特别地，当通电电流达到预定的上限阈值时，这种电路将两相的一系列电源和接地断开，并且当通过再循环二极管在相中保持的通电电流再次连接到电源和接地时 9,10,11,12）低于预定的下限阈值。 以这种方式，相位内的通电电流保持接近恒定，并且在相同的机械性能下，这减少到绕组铜损耗的最小值。 绕组的交叉配置，其中电流传感器（19）位于十字的中心，进一步使得能够将控制电路的部件减少到最小数量。
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