JPH042993U - - Google Patents
Info
- Publication number
- JPH042993U JPH042993U JP1990041379U JP4137990U JPH042993U JP H042993 U JPH042993 U JP H042993U JP 1990041379 U JP1990041379 U JP 1990041379U JP 4137990 U JP4137990 U JP 4137990U JP H042993 U JPH042993 U JP H042993U
- Authority
- JP
- Japan
- Prior art keywords
- electric motor
- detection unit
- value
- speed
- detects
- 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
- 238000001514 detection method Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Electric Motors In General (AREA)
Description
図面は本考案の一実施例の構成図である。
１……電動機、６……速度検出部、７……電圧
検出部、８……電流検出部、９……演算回路部、
１０……判定回路部、Ｐ……発熱量、Ｗ……回転
速度値、Ｋ……トルク定数、Ｖ……駆動電圧値、
Ｉ……駆動電流値。
The drawing is a configuration diagram of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Electric motor, 6... Speed detection section, 7... Voltage detection section, 8... Current detection section, 9... Arithmetic circuit section,
10... Judgment circuit section, P... Calorific value, W... Rotational speed value, K... Torque constant, V... Drive voltage value,
I... Drive current value.
Claims (1)
記電動機の駆動電流を検出する電流検出部と、前
記電動機の回転速度を検出する速度検出部と、前
記電圧検出部、前記電流検出部及び前記速度検出
部の出力信号に基いて前記電動機の発熱量を演算
する演算回路部と、該演算回路部の出力信号に基
いて前記電動機の過負荷状態を判定する判定回路
部と、を備え、 前記演算回路部は、前記電動機の回転速度値に
トルク定数を乗算した値を駆動電圧値から減算し
、斯る減算値に駆動電流値を乗算することで、前
記電動機の発熱量を検出してなることを特徴とす
る電動機の過負荷検出装置。[Claims for Utility Model Registration] A voltage detection unit that detects a drive voltage of an electric motor, a current detection unit that detects a drive current of the motor, a speed detection unit that detects a rotational speed of the electric motor, and the voltage detection unit , an arithmetic circuit unit that calculates the amount of heat generated by the electric motor based on the output signals of the current detection unit and the speed detection unit; and a determination circuit that determines an overload state of the electric motor based on the output signal of the arithmetic circuit unit. The arithmetic circuit section subtracts a value obtained by multiplying the rotational speed value of the electric motor by a torque constant from the drive voltage value, and multiplies the subtracted value by a drive current value, thereby increasing the speed of the electric motor. An electric motor overload detection device characterized by detecting the amount of heat generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990041379U JPH042993U (en) | 1990-04-18 | 1990-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990041379U JPH042993U (en) | 1990-04-18 | 1990-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH042993U true JPH042993U (en) | 1992-01-10 |
Family
ID=31551996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990041379U Pending JPH042993U (en) | 1990-04-18 | 1990-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH042993U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5683241U (en) * | 1979-11-30 | 1981-07-04 |
-
1990
- 1990-04-18 JP JP1990041379U patent/JPH042993U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5683241U (en) * | 1979-11-30 | 1981-07-04 |
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