JPS5797103A - Working height controller of ground working machine - Google Patents
Working height controller of ground working machineInfo
- Publication number
- JPS5797103A JPS5797103A JP55174147A JP17414780A JPS5797103A JP S5797103 A JPS5797103 A JP S5797103A JP 55174147 A JP55174147 A JP 55174147A JP 17414780 A JP17414780 A JP 17414780A JP S5797103 A JPS5797103 A JP S5797103A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- pulse
- working
- signal
- duties
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/14—Control of position or direction using feedback using an analogue comparing device
- G05D3/18—Control of position or direction using feedback using an analogue comparing device delivering a series of pulses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Feedback Control In General (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
PURPOSE:To perform the stable move-up/down control with a reduced degree of the overshoot through a compact and inexpensive electronic control, by processing an analog signal after converting it into a pulse signal having a duty proportional to the size of the signal. CONSTITUTION:Analog electric signals E0 and E supplied from a setting mechanism 6 and a detecting mechanism 7 respectively are converted into pulse signals A and B having a certain period of duties (a) and (b) which are proportional to the signals E0 and E through square wave oscillating circuits 9 and 10. Then pulse control signals U and D having duties t1 and t2 corresponding to the duty deviation of both signals A and B are produced by an arithmetic circuit 11. The driving circuits 17 and 20 of a driver 4 for up/down movement are operated by the signals U and D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55174147A JPS5797103A (en) | 1980-12-09 | 1980-12-09 | Working height controller of ground working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55174147A JPS5797103A (en) | 1980-12-09 | 1980-12-09 | Working height controller of ground working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5797103A true JPS5797103A (en) | 1982-06-16 |
Family
ID=15973488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55174147A Pending JPS5797103A (en) | 1980-12-09 | 1980-12-09 | Working height controller of ground working machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5797103A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60168344U (en) * | 1984-04-13 | 1985-11-08 | ヤンマー農機株式会社 | threshing equipment |
| JPS621001A (en) * | 1985-06-26 | 1987-01-07 | Kubota Ltd | Drive control mechanism for actuator of working machine |
| JPS6340918A (en) * | 1986-08-05 | 1988-02-22 | Kubota Ltd | Driving device for actuator |
| JPS63282809A (en) * | 1987-05-15 | 1988-11-18 | Kubota Ltd | Elevation control device for working machine |
-
1980
- 1980-12-09 JP JP55174147A patent/JPS5797103A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60168344U (en) * | 1984-04-13 | 1985-11-08 | ヤンマー農機株式会社 | threshing equipment |
| JPH0425941Y2 (en) * | 1984-04-13 | 1992-06-23 | ||
| JPS621001A (en) * | 1985-06-26 | 1987-01-07 | Kubota Ltd | Drive control mechanism for actuator of working machine |
| JPS6340918A (en) * | 1986-08-05 | 1988-02-22 | Kubota Ltd | Driving device for actuator |
| JPS63282809A (en) * | 1987-05-15 | 1988-11-18 | Kubota Ltd | Elevation control device for working machine |
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