CN1077699C - Microcomputer speed proportional asynchronous control system - Google Patents
Microcomputer speed proportional asynchronous control system Download PDFInfo
- Publication number
- CN1077699C CN1077699C CN 93108059 CN93108059A CN1077699C CN 1077699 C CN1077699 C CN 1077699C CN 93108059 CN93108059 CN 93108059 CN 93108059 A CN93108059 A CN 93108059A CN 1077699 C CN1077699 C CN 1077699C
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- China
- Prior art keywords
- speed
- frequency
- synchronous motor
- shearing
- control system
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- Expired - Fee Related
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Abstract
The present invention relates to a microcomputer speed proportion synchronous control system for controlling various fixed-length shearing systems. The present invention comprises a computer controller, a permanent magnetism synchronous motor, a frequency converting and speed regulating device, a double-crank mechanism, a feeding mechanism and a pair of flying shears. The computer controller determines the frequency ratio of a frequency converter of the flying shears and a frequency converter of the feeding mechanism according to the set shearing length to realize the fixed-length shearing. The flying shears and the feeding mechanism both adopt the permanent magnetism synchronous motor to convert the frequency and regulate the speed, and the double-crank mechanism realizes the same speed of the linear speed of a shearing edge of the flying shears at the moment of shearing and the feeding speed. The control system has the advantages of wide regulating range, high and stable speed regulating precision, simple operation, easy maintenance and low cost. Besides, under the condition of the disturbance by the abrupt change of load, etc., the strict speed ratio can still be maintained.
Description
The present invention is used for the control of various cut-to-length system.
The control of various cut-to-length of the prior art system is to adopt mechanical inner driving system to realize that ratio is synchronous, or the speed control of employing direct current generator, the shortcoming of its existence is exactly that synchronous infinitely variable transmission short, the lasting precision in serviceable life of ratio is low, the speed control that adopts direct current generator then cost height, reliability is relatively poor, and brush, tech-generator and photoelectric detection system etc. are fragile, use, maintenance requirement is tighter, and is higher to operation, maintenance personal's competency profiling.
Purpose of the present invention provide with regard to being to overcome above-mentioned shortcoming a kind of easy and simple to handle, safeguard easy, with low cost, as to have broad speed adjustable range and higher, more stable adjusting speed accuracy and under disturbance situations such as load changing, still keep the microcomputer speed proportional asynchronous control system of strict speed ratio.
The schematic diagram of microcomputer speed proportional asynchronous control system of the present invention as shown in drawings.It is by permagnetic synchronous motor (1), permagnetic synchronous motor (2), variable-frequence governor (9), variable-frequence governor (10), computer controller (8), double-crank mechanism (5), feed mechanism (7), flying shear compositions such as (6), its feature just is: computer controller (8) is determined the frequency ratio of flying shear frequency converter (9) and feed mechanism frequency converter (10) according to setting sheared length, flying shear (6) adopts permagnetic synchronous motor (2) frequency control, the also corresponding employing permagnetic synchronous motor of feed mechanism (7) (1) frequency control, double-crank mechanism (5) realize that flying shear (6) shearing moment cutting edge linear velocity and feeding speed are with speed.
The present invention compared with prior art has following advantage and good effect:
1. have the speed adjustable range of broad and higher, more stable adjusting speed accuracy.2. under disturbance situations such as load changing, still keep the strict speed ratio.3. easy and simple to handle, safeguard easy, with low cost.
Describe concrete principle of work of the present invention in detail below in conjunction with accompanying drawing:
Accompanying drawing is the embodiment that microcomputer speed proportional asynchronous control system is used for controlling the paper shears of corrugated paper board production line, computer controller (8) is controlled the frequency ratio of flying shear frequency converter and feed mechanism frequency converter to realize cut-to-length according to the sheared length of setting, permagnetic synchronous motor (1), the electric voltage frequency that permagnetic synchronous motor (2) is imported according to its frequency converter is obtained rotating speed separately, permagnetic synchronous motor (1) drives feed mechanism (7) paper feeding through speed reduction unit (3), permagnetic synchronous motor (2) is through speed reduction unit (4), double-crank mechanism (5) drives flying shear (6) paper-cut, double-crank mechanism (5) realizes that flying shear (6) shearing moment cutting edge linear velocity and paper feeding speed are with speed, and paper advance mechanism adopts synchronous machine drives, its velocity-stabilization, cardboard is constant with the relative coefficient that skids of paper advance mechanism, and shear precision is guaranteed.In addition, optical code disk (11) and sensor (12) also are installed are respectively applied for the number that detects chart speed, paper length and paper, and detected data are shown on computer controller (8).
Claims (1)
1. one kind is used for the microcomputer speed proportional asynchronous control system that various cut-to-lengths are controlled, it comprises computer controller (8), permagnetic synchronous motor (1), permagnetic synchronous motor (2), variable-frequence governor (9), variable-frequence governor (10), double-crank mechanism (5), feed mechanism (7), flying shear (6), its feature just is: computer controller (8) is determined the frequency ratio of flying shear frequency converter (9) and feed mechanism frequency converter (10) according to setting sheared length, flying shear (6) adopts permagnetic synchronous motor (2) frequency control, the also corresponding employing permagnetic synchronous motor of feed mechanism (7) (1) frequency control, double-crank mechanism (5) realize that flying shear (6) shearing moment cutting edge linear velocity and feeding speed are with speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93108059 CN1077699C (en) | 1993-06-30 | 1993-06-30 | Microcomputer speed proportional asynchronous control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93108059 CN1077699C (en) | 1993-06-30 | 1993-06-30 | Microcomputer speed proportional asynchronous control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1088005A CN1088005A (en) | 1994-06-15 |
| CN1077699C true CN1077699C (en) | 2002-01-09 |
Family
ID=4986994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93108059 Expired - Fee Related CN1077699C (en) | 1993-06-30 | 1993-06-30 | Microcomputer speed proportional asynchronous control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1077699C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101452257B (en) * | 2007-11-29 | 2010-06-02 | 宝山钢铁股份有限公司 | Crank type flying shear control method and apparatus with head and tail shearing compensation |
-
1993
- 1993-06-30 CN CN 93108059 patent/CN1077699C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1088005A (en) | 1994-06-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG UNIVERSITY OF TECHNOLOGY Free format text: FORMER NAME OR ADDRESS: GUANGDONG MACHINERY COLLEGE |
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| CP01 | Change in the name or title of a patent holder |
Patentee after: Guangdong University of Technology Patentee before: Guangzhou Mechanical Engineering College |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |