JPS6257538U - - Google Patents
Info
- Publication number
- JPS6257538U JPS6257538U JP14869985U JP14869985U JPS6257538U JP S6257538 U JPS6257538 U JP S6257538U JP 14869985 U JP14869985 U JP 14869985U JP 14869985 U JP14869985 U JP 14869985U JP S6257538 U JPS6257538 U JP S6257538U
- Authority
- JP
- Japan
- Prior art keywords
- current
- voltage
- control circuit
- overcurrent
- voltage corresponding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Protection Of Generators And Motors (AREA)
- Brushless Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Description
第１図は本考案の一実施例のブラシレス直流モ
ータ駆動制御回路図、第２図は第１図に示した駆
動制御回路による制御作用説明図、第３図は従来
のブラシレス直流モータ駆動制御回路図、第４図
はその駆動電流通電タイミング図、第５図Ａ，Ｂ
，Ｃは第３図に示した駆動制御回路の部分詳細図
である。
ＣＯＭ…コンパレータ、Ｄ１，Ｄ２，Ｄ３…ダ
イオード、ＭＰ…位置センサ、ＭＰＣ…位置検出
回路、ＮＡＮＤ１，ＮＡＮＤ２，ＮＡＮＤ３…Ｎ
ＡＮＤゲート、Ｒ１，Ｒ２…抵抗、ＳＣ…ステー
タコイル、ＴＲ１，ＴＲ２，ＴＲ３…トランジス
タ。
Fig. 1 is a brushless DC motor drive control circuit diagram of an embodiment of the present invention, Fig. 2 is an explanatory diagram of control operation by the drive control circuit shown in Fig. 1, and Fig. 3 is a conventional brushless DC motor drive control circuit. Figure 4 is the drive current energization timing diagram, Figure 5 A, B
, C are partial detailed views of the drive control circuit shown in FIG. 3. COM...Comparator, D1, D2, D3...Diode, MP...Position sensor, MPC...Position detection circuit, NAND1, NAND2, NAND3...N
AND gate, R1, R2...resistor, SC...stator coil, TR1, TR2, TR3...transistor.
Claims (1)
接続されたスイツチング素子がスイツチング制御
回路の出力信号に従つて作動し、各相ステータコ
イルに順次電流が通電されたとき、該通電電流を
検出して通電電流に対応した電圧を生成する検出
回路と、該検出回路で生成された通電電流対応電
圧とヒステリシス巾を有して設定された設定電流
の上限値対応電圧とを比較演算して通電電流対応
電圧が上限値対応電圧より高い場合に前記通電電
流が過電流であることを示す過電流信号を前記ス
イツチング制御回路に出力してスイツチング制御
回路の出力信号を遮断させるとともに前記通電電
流対応電圧が前記設定電流の下限値対応電圧まで
低下したときに前記過電流信号の出力を停止する
過電流信号出力回路と、を備えたことを特徴とす
るブラシレス直流モータの過電流制御回路。 The switching element connected to each phase stator coil of the brushless DC motor operates according to the output signal of the switching control circuit, and when current is sequentially applied to each phase stator coil, the energizing current is detected and the energizing current is changed. The detection circuit that generates the corresponding voltage is compared with the voltage corresponding to the current carrying current generated by the detection circuit and the voltage corresponding to the upper limit value of the set current, which is set with a hysteresis width, and the voltage corresponding to the carrying current is determined as the upper limit. An overcurrent signal indicating that the energizing current is an overcurrent is output to the switching control circuit when the voltage is higher than the voltage corresponding to the energizing current, and the output signal of the switching control circuit is cut off. An overcurrent control circuit for a brushless DC motor, comprising: an overcurrent signal output circuit that stops outputting the overcurrent signal when the voltage drops to a voltage corresponding to a lower limit value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14869985U JPH0428187Y2 (en) | 1985-09-27 | 1985-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14869985U JPH0428187Y2 (en) | 1985-09-27 | 1985-09-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6257538U true JPS6257538U (en) | 1987-04-09 |
| JPH0428187Y2 JPH0428187Y2 (en) | 1992-07-08 |
Family
ID=31063216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14869985U Expired JPH0428187Y2 (en) | 1985-09-27 | 1985-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0428187Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001275392A (en) * | 2000-03-29 | 2001-10-05 | Fujitsu General Ltd | Motor-control method and device |
| JP2010041823A (en) * | 2008-08-05 | 2010-02-18 | Toyota Industries Corp | Drive device of electromagnetic load |
| JP2012207873A (en) * | 2011-03-30 | 2012-10-25 | Hitachi Appliances Inc | Air conditioner |
-
1985
- 1985-09-27 JP JP14869985U patent/JPH0428187Y2/ja not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001275392A (en) * | 2000-03-29 | 2001-10-05 | Fujitsu General Ltd | Motor-control method and device |
| JP2010041823A (en) * | 2008-08-05 | 2010-02-18 | Toyota Industries Corp | Drive device of electromagnetic load |
| JP2012207873A (en) * | 2011-03-30 | 2012-10-25 | Hitachi Appliances Inc | Air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0428187Y2 (en) | 1992-07-08 |
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