JPS6048397U

JPS6048397U - Commutatorless DC motor using Hall element

Info

Publication number: JPS6048397U
Application number: JP1984114803U
Authority: JP
Inventors: 和田　金三
Original assignee: 日本ビクター株式会社
Priority date: 1984-07-30
Filing date: 1984-07-30
Publication date: 1985-04-05

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はホール素子を用いた無整流直流電動機の概略図
、第２図は従来のこの種の無整流子直流電動機の駆動電
気回路の一例を示す図、第３図のＡはその従来例におけ
るホール素子の各電圧端子の電圧と回転子の回転角の関
係を示す図、同図のＢは各固定子巻線の電流と回転子の
回転角の関係を示す図、第４図はこの考案のホール素子
を用いた無整流直流電動機の駆動電気回路の実施例を示
す図、第５図のＡはその実施例におけるホール素子の各
電圧端子の電圧と回転子の回転角の関係を示す図、同図
のＢは各固定子巻線の電流と回転子の回転角の関係を示
す図である。１〜４・・・ホール素子の電圧端子、５〜８・・・ホー
ル素子の電流端子、９，１０・・・ホール素子、１１〜
１４・・・固定子巻線、１５・・・回転子、２３〜２Ｇ
・・・前置トランジスタ、２７〜３０・・・出力トラン
ジスタ、３１．３２・・・制御用トランジスタ。Fig. 1 is a schematic diagram of a non-commutated DC motor using a Hall element, Fig. 2 is a diagram showing an example of a drive circuit for a conventional non-commutated DC motor of this type, and A in Fig. 3 is the conventional example. Figure 4 shows the relationship between the voltage at each voltage terminal of the Hall element and the rotation angle of the rotor. A diagram showing an example of a driving electric circuit for a non-rectified DC motor using the invented Hall element, and A in Fig. 5 shows the relationship between the voltage at each voltage terminal of the Hall element and the rotation angle of the rotor in the example. FIG. 2B is a diagram showing the relationship between the current in each stator winding and the rotation angle of the rotor. 1-4... Voltage terminal of Hall element, 5-8... Current terminal of Hall element, 9, 10... Hall element, 11-
14... Stator winding, 15... Rotor, 23~2G
... Front transistor, 27-30... Output transistor, 31.32... Control transistor.

Claims

[Scope of utility model registration request]

It has a stator winding of multiple phases arranged at constant electrical angle intervals and a rotor in which permanent magnets are alternately magnetized,
A non-commutator that detects the rotation angle of the rotor using a plurality of four-terminal Hall elements, and controls the current flowing through each of the stator windings by making the transistor conductive or non-conductive based on the detection signal. In the DC motor, the current terminals of the plurality of four-terminal Hall elements are connected in series to both ends of the DC power supply, and a predetermined current is commonly supplied to the plurality of four-terminal Hall elements, and one of the stator windings is connected in series to both ends of the DC power supply. 180 in electrical angle
The currents flowing through the two-phase stator windings arranged at intervals are controlled by respective output transistors, and each output transistor has a voltage terminal of one four-terminal Hall element connected to each base, and an emitter connected to the output transistor. a current path controlled by the output signal of each commonly connected front transistor, through which all emitter currents of the respective front transistors whose emitters are commonly connected flow;
Other two connected in the same way as above and placed 180 degrees apart.
A non-commutated DC motor using a Hall element, characterized in that the current path through which the emitter current of a pre-transistor for controlling the current of a stator winding of a phase is provided is oppositely and independently provided.