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公开(公告)号：US5281903A
公开(公告)日：1994-01-25
申请号：US730847
申请日：1991-09-11
申请人： Hideaki Oku , Yo Ikebe , Hidetsugu Komiya , Shigeki Kawada , Takeshi Nakamura
发明人： Hideaki Oku , Yo Ikebe , Hidetsugu Komiya , Shigeki Kawada , Takeshi Nakamura
CPC分类号： H02P25/0925 , Y02P80/116
摘要： A drive control method for a variable reluctance type motor capable of improving the motor efficiency by preventing generation of a disturbance torque. In function generators (8A to 8C) of a controller for embodying the method, the motor rotation direction and the motor driving mode are determined based on the generation order of A- and B-phase feedback pulses from a pulse coder (7) and the sign of a torque command (Tc) from a speed loop compensation circuit (1), and, on the basis of the determination results, either one of four excitation patterns is selected. Function signal values corresponding to actual motor electrical angles (.theta.) are generated from the function generators in accordance with the selected excitation pattern, and excitation of individual phases of the motor (6) is controlled by power amplifiers (4A to 4C) which respond to voltage commands derived based on these function signal values. The excitation interruption timing is so determined as to extinguish a winding current before a disturbance torque is generated by the current which is caused to flow, due to the presence of the inductance of the stator winding, in this winding after the excitation interruption.
摘要翻译： PCT No.PCT / JP90 / 01520 Sec。 371日期1991年9月11日 102（e）日期1991年9月11日PCT 1990年11月21日PCT PCT。 出版物WO91 / 08611 日期1991年6月13日。一种用于通过防止产生干扰转矩来提高电动机效率的可变磁阻型电动机的驱动控制方法。 在用于实施该方法的控制器的功能发生器（8A至8C）中，基于来自脉冲编码器（7）的A相和B相反馈脉冲的产生次数确定电动机旋转方向和电动机驱动模式，并且 来自速度环补偿电路（1）的转矩指令（Tc）的符号，并且基于确定结果，选择四种激励模式中的一种。 根据所选择的激励模式，从功能发生器产生对应于实际电动机电角度（（θ））的功能信号值，并且由功率放大器（4A至4C）控制电动机（6）的各相的激励，功率放大器 响应基于这些功能信号值导出的电压指令。 在励磁中断之后，由于定子绕组的电感的存在而导致的电流产生干扰转矩之前，励磁中断时刻被确定为熄灭绕组电流。
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公开(公告)号：US4928009A
公开(公告)日：1990-05-22
申请号：US369559
申请日：1989-04-13
申请人： Yo Ikebe , Hideaki Oku
发明人： Yo Ikebe , Hideaki Oku
CPC分类号： G01D5/24476 , H03M1/24
摘要： In an optical rotary encoder which detects the angle of rotation of a rotary shaft by detecting the ray of light transmitting through an angle detection pattern formed on a rotary disc coupled to the rotary shaft, a deflection detection pattern (20b) is disposed on the rotary disc separately from the angle detection pattern and the direction and magnitude of deflection of the rotary shaft with respect to the center of a bearing is detected by detecting the change in the quantity of light passing through the deflection detection pattern (20b). The angle of rotation thus detected is corrected to the angle of rotation around the axis of the rotary shaft.
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公开(公告)号：US5148090A
公开(公告)日：1992-09-15
申请号：US476446
申请日：1990-05-23
申请人： Hideaki Oku , Takeshi Nakamura
发明人： Hideaki Oku , Takeshi Nakamura
CPC分类号： H02K19/103
摘要： This invention determines the configurations of a rotor (10) and a stator (12) and conductance periods and conductance phases of the conductance currents to obtain a smooth rotation of a variable reluctance motor as an AC servo motor. When the number of phases of a motor is m, the number of salient poles (R.sub.j) of a rotor (10) is an integer n, and the number of salient poles (S.sub.k) of a stator (12 ) is r.multidot.m, n is a whole multiple of r, and where the configuration of the stator salient pole (S.sub.k) is rectangular and the configuration of the rotor salient pole (R.sub.j) is sinusoidal, AC sine wave currents shifted by 2n.pi./(r.multidot.m) each and having two times as large a period as that of a magnetic permeance fluctuation caused by a rotation of the rotor (10), are conducted to the phases of the motor.
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公开(公告)号：US5378953A
公开(公告)日：1995-01-03
申请号：US185962
申请日：1994-02-07
CPC分类号： H02K1/2773 , H02K21/14
摘要： A rotor (10) for a synchronous motor includes a plurality of permanent magnets (14) arranged at generally equal intervals around a shaft (12), and a plurality of core members (16) arranged around the shaft (12) while holding each permanent magnet (14) therebetween in a circumferential direction, so as to constitute magnetic poles. Each core member (16) has a symmetrical plane (S) involving a center axis (0) of the shaft (12), and is provided with a rod insertion hole (20) axially passing through the core member so as to involve the symmetrical plane (S) at the generally center of the core member. A rod member (22) is inserted into each rod insertion hole (20). Each core member (16) is further provided with a first through hole (24) formed at a portion defined from the neighborhood of a radial inner surface (16a) to the neighborhood of the rod insertion hole (20); the first through hole axially passing through the core member so as to involve the symmetrical plane (S), and a second through hole (28) formed at a portion defined from the neighborhood of the rod insertion hole (20) to the neighborhood of the radial outer surface (16b); the second through hole axially passing through the core member so as to involve the symmetrical plane (S). The first through hole (24) and the second through hole (28) can maintain the distribution of the main magnetic flux passing through the core member (16) in generally symmetrical state relative to the symmetrical plane (S).
摘要翻译： PCT No.PCT / JP93 / 00760 Sec。 371日期1994年2月7日 102（e）1994年2月7日PCT PCT 1993年6月7日PCT公布。 公开号WO93 / 26076 1。一种用于同步电动机的转子（10）包括围绕轴（12）以大致相等的间隔布置的多个永磁体（14），以及围绕该轴设置的多个芯构件（16） （12），同时在圆周方向上保持每个永磁体（14），以便构成磁极。 每个芯构件（16）具有涉及轴（12）的中心轴线（0）的对称平面（S），并且设置有轴向穿过芯构件的杆插入孔（20），以便涉及对称 平面（S）在芯构件的大致中心处。 杆构件（22）插入每个杆插入孔（20）中。 每个芯构件（16）还设置有形成在从径向内表面（16a）附近限定的部分到杆插入孔（20）附近的第一通孔（24）。 所述第一通孔轴向地穿过所述芯构件以涉及所述对称平面（S）;以及第二通孔（28），形成在从所述杆插入孔（20）附近限定到所述第二通孔附近的部分 径向外表面（16b）; 所述第二通孔轴向地穿过所述芯构件以涉及对称平面（S）。 第一通孔（24）和第二通孔（28）能够将通过芯构件（16）的主磁通量相对于对称平面（S）保持在大致对称的状态。
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