JPH01150478U

JPH01150478U -

Info

Publication number: JPH01150478U
Application number: JP4852088U
Authority: JP
Priority date: 1988-04-11
Filing date: 1988-04-11
Publication date: 1989-10-18

Description

[Brief explanation of the drawing]

第１図は本考案に係るステツピングモータの実
施例を示す断面図、第２図は同上実施例中の固定
子部分を示す正面図、第３図は上記実施例に適用
可能な励磁方式の例を示すタイミングチヤート、
第４図は上記実施例における１相励磁の場合の動
作を示す固定子と回転子の展開図、第５図は同じ
く２相励磁の場合の動作を示す固定子と回転子の
展開図、第６図は上記実施例における１相励磁の
場合の発電巻線の誘起電圧の波形図、第７図は同
じく回転速度と誘起電圧との関係を示す波形図、
第８図は２相励磁の場合の発電巻線の誘起電圧の
波形図、第９図は合成された誘起電圧と回転速度
との関係を異なる励磁相ごとに示す波形図、第１
０図は励磁相と合成された誘起電圧との関係を示
すベクトル図、第１１図は発電巻線の誘起電圧を
合成するための切替回路の例を示す回路図、第１
２図は上記切替回路における各スイツチのオン、
オフ切り替え状態を示すチヤート図、第１３図は
本考案に適用可能な制御回路の例を示すブロツク
図、第１４図は誘起電圧取り出しの別の例を示す
回路図、第１５図はステツプ駆動方式の別の例を
示す動作説明図である。１１……固定子、１２……固定子巻線、１８…
…永久磁石、２２……突極、２２ａ，２２ｂ……
位置検出用突極、ａ，ｂ……発電巻線。 Fig. 1 is a sectional view showing an embodiment of a stepping motor according to the present invention, Fig. 2 is a front view showing a stator portion in the above embodiment, and Fig. 3 is an excitation method applicable to the above embodiment. Timing chart showing an example,
FIG. 4 is a developed view of the stator and rotor showing the operation in the case of one-phase excitation in the above embodiment, FIG. 5 is a developed view of the stator and rotor showing the operation in the case of two-phase excitation, and FIG. FIG. 6 is a waveform diagram of the induced voltage in the power generation winding in the case of one-phase excitation in the above embodiment, and FIG. 7 is a waveform diagram similarly showing the relationship between rotational speed and induced voltage.
Figure 8 is a waveform diagram of the induced voltage in the power generation winding in the case of two-phase excitation, Figure 9 is a waveform diagram showing the relationship between the combined induced voltage and rotational speed for each different excitation phase, and Figure 1.
Figure 0 is a vector diagram showing the relationship between the excitation phase and the combined induced voltage, Figure 11 is a circuit diagram showing an example of a switching circuit for combining the induced voltage of the power generation winding, and Figure 1.
Figure 2 shows the on state of each switch in the above switching circuit.
A chart diagram showing the OFF switching state, FIG. 13 is a block diagram showing an example of a control circuit applicable to the present invention, FIG. 14 is a circuit diagram showing another example of extracting the induced voltage, and FIG. 15 is a step drive system. FIG. 6 is an operation explanatory diagram showing another example of the operation. 11... Stator, 12... Stator winding, 18...
...Permanent magnet, 22... Salient pole, 22a, 22b...
Salient poles for position detection, a, b...power generation windings.

Claims

[Claims for Utility Model Registration] A rotor having a permanent magnet, a stator having a plurality of salient poles disposed facing the rotor at equal intervals on the circumference, and a stator wound around the salient poles. and a plurality of stator windings through which excitation currents of different phases flow between each other, and which moves the rotor by switching and supplying excitation currents to the plurality of stator windings. Two of the salient poles are each wound with two power generation windings that generate an induced voltage as the rotor rotates, and the two power generation windings generated in the two power generation windings are The induced voltages have different phases from each other and are in phase with the plurality of stator windings having different phases, and the two induced voltage outputs are synthesized so as to obtain a voltage output corresponding to the rotational speed of the rotor. A stepping motor characterized in that its drive is controlled according to the combined output.