JPH01131298U - - Google Patents
Info
- Publication number
- JPH01131298U JPH01131298U JP1988016796U JP1679688U JPH01131298U JP H01131298 U JPH01131298 U JP H01131298U JP 1988016796 U JP1988016796 U JP 1988016796U JP 1679688 U JP1679688 U JP 1679688U JP H01131298 U JPH01131298 U JP H01131298U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- control device
- voltage
- time during
- predetermined value
- 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.)
- Pending
Links
- 230000002159 abnormal effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
Description
第１図は本実施例のＰＷＭ制御装置の回路図、
第２図は本実施例のＰＷＭ制御装置の動作を説明
するタイムチヤート、第３図は他の実施例のＰＷ
Ｍ制御装置の回路図、第４図は他の実施例のＰＷ
Ｍ制御装置の動作を説明するタイムチヤート、第
５図は従来のＰＷＭ制御装置の回路図である。
４，９……コンパレータ、５……モータ、６…
…位相差、速度差検知回路、７……積分回路、１
０……ＤＦ．Ｆ、１１……単安定マルチバイブレ
ータ、１２……異常検出回路、Ｑ１〜Ｑ４……ト
ランジスタ。
FIG. 1 is a circuit diagram of the PWM control device of this embodiment,
Fig. 2 is a time chart explaining the operation of the PWM control device of this embodiment, and Fig. 3 is a PWM control device of another embodiment.
A circuit diagram of the M control device, Fig. 4 is a PW of another embodiment.
A time chart illustrating the operation of the M control device, and FIG. 5 is a circuit diagram of a conventional PWM control device. 4, 9...Comparator, 5...Motor, 6...
...Phase difference, speed difference detection circuit, 7...Integrator circuit, 1
0...DF. F, 11...monostable multivibrator, 12...abnormality detection circuit, Q1 to Q4 ...transistor.
Claims (1)
ＷＭ制御装置において、 前記モータに電圧が印加される時間あるいはモ
ータに電圧が印加されない時間を計測する計測手
段と、該計測手段による計測値が所定値以上ある
いは所定値以下のとき異常信号を出力する異常信
号出力手段とを有することを特徴とするＰＷＭ制
御装置。[Scope of claim for utility model registration] P that controls speed by changing the energization rate to the motor
The WM control device includes a measuring means for measuring the time during which voltage is applied to the motor or the time during which voltage is not applied to the motor, and outputting an abnormal signal when the measured value by the measuring means is greater than or equal to a predetermined value or less than a predetermined value. A PWM control device comprising: abnormal signal output means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988016796U JPH01131298U (en) | 1988-02-10 | 1988-02-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988016796U JPH01131298U (en) | 1988-02-10 | 1988-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01131298U true JPH01131298U (en) | 1989-09-06 |
Family
ID=31230033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988016796U Pending JPH01131298U (en) | 1988-02-10 | 1988-02-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01131298U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62285684A (en) * | 1986-06-02 | 1987-12-11 | Hitachi Ltd | Current limiting circuit for dc motor |
-
1988
- 1988-02-10 JP JP1988016796U patent/JPH01131298U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62285684A (en) * | 1986-06-02 | 1987-12-11 | Hitachi Ltd | Current limiting circuit for dc motor |
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