CN202534242U - Control system demonstrator - Google Patents
Control system demonstrator Download PDFInfo
- Publication number
- CN202534242U CN202534242U CN2012202264848U CN201220226484U CN202534242U CN 202534242 U CN202534242 U CN 202534242U CN 2012202264848 U CN2012202264848 U CN 2012202264848U CN 201220226484 U CN201220226484 U CN 201220226484U CN 202534242 U CN202534242 U CN 202534242U
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- water
- loop control
- level sensor
- closed
- binding post
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Abstract
The utility model discloses a control system demonstrator, comprising a box body, wherein the box body is internally provided with a control console and a cavity for holding water circulating equipment, the control console is internally provided with a power module, an open-loop control module and a closed-loop control module, and a control panel of the control console is provided with a power switch, a manual/automatic selector switch, an open-loop control switch connected with the open-loop control module, a closed-loop control switch connected with the closed-loop control module, and a binding post connected with a water level sensor. The control system demonstrator disclosed by the utility model can be used for visually demonstrating the working principles of the open-loop control system and the closed-loop control system, and ensuring that students can visually learn the two control manners in a learning process so as to master distinctions between open-loop control and closed-loop control in a control system as soon as possible, is favorable for improving learning efficiency.
Description
Technical field
The utility model relates to a kind of teaching appliance, particularly a kind of demonstrator that is used to demonstrate open-loop control system and closed-loop control system duty.
Background technology
Two kinds of common control modes of control system are open loop control and closed-loop control.Open-loop control system generally includes controller, actuator and controlled device; System confirms the input quantity of controller according to the desired output quantity of controlled device; And give controller with input quantity; Controller is controlled actuator according to input quantity, and controlled device is issued to the output quantity of system requirements in the work of actuator.The transmission of signal is unidirectional in the open-loop control system, and itself can not adjust and compensate the deviation between theoretical output quantity and the actual output quantity, so its degree of accuracy is relatively low.Closed-loop control system is except controller, actuator and controlled device; Also comprise pick-up unit and comparer; That is to say the forward transmission that can not only carry out signal between input end and the output terminal of system, control system also feeds back to input end with the actual output quantity that output terminal records, and compares through comparer again; With the signal of deviate, thereby constitute a closed-loop path as driving governor.Closed-loop control system causes that control accuracy and reliability are high and is used widely.Yet in normal teaching process,, make the student comparatively difficult when understanding open loop control system and closed-loop control system, can not individual understanding intuitively be arranged these two kinds of systems because theoretical explanation is comparatively abstract.
Summary of the invention
The technical matters that the utility model solves provides the demonstrator that a kind of control system of divided ring intuitively and closed-loop control system principle of work are demonstrated.
For solving the problems of the technologies described above, the technical scheme that the utility model is taked is following.
A kind of control system demonstrator; Comprise casing; Be provided with control desk and the cavity of placing water circulating apparatus in the said casing, water inlet pipe and rising pipe that said water circulating apparatus comprises lower flume, water tower and is used to connect lower flume and water tower are provided with level sensor in said lower flume and the water tower; Be provided with the water pump that is used for the water of lower flume is pumped into water tower in the said water inlet pipe, be provided with the Draw off valve that the water that is used for controlling water tower flows into lower flume in the said rising pipe;
Be provided with power module, open loop control module and closed-loop control module in the said control desk, the binding post that the control panel of control desk is provided with power switch, hand automatic transfer switch, the open loop CS that is connected with the open loop control module, the closed-loop control switch that is connected with the closed-loop control module and is connected with level sensor.
The improvement of the utility model is: the level sensor in the said water tower is set to two, is used to monitor the last level sensor and the following level sensor that is used to monitor water level under the water tower of water level on the water tower; Be provided with the lower flume level sensor that is used to monitor the lower flume water level in the said lower flume.
Above-mentioned binding post specifically comprises: said binding post comprises binding post I, binding post II and binding post III, and said binding post I is connected with the lower flume level sensor, and the binding post II is connected with last level sensor, and the binding post III is connected with following level sensor.
The improvement of the utility model also is: also be provided with the pilot lamp that is used for indicating operating status on the control panel of said control desk.
Owing to adopted above technical scheme, the acquisition of technology progress of the utility model institute is following:
The utility model designs according to the principle of work of open loop control and closed-loop control in the control system; Can demonstrate open-loop control system and closed-loop control system principle of work intuitively; Make the student in learning process, individual understanding intuitively arranged to these two kinds of control modes; Sharpen understanding,, improve learning efficiency so that grasp the difference of open loop control and closed-loop control in the control system as early as possible.
Description of drawings
Fig. 1 is the composition structural representation of the utility model.
Wherein: 1. lower flume, 2. water tower, 3. water inlet pipe, 4. rising pipe; 5. Draw off valve, 6. water pump, 7. power switch, 8. hand automatic transfer switch; 9. open loop CS, 10. lower flume level sensor, 11. binding post I, level sensor on 12.; 13. following level sensor, 14. binding post II, 15. binding post III, 16. closed-loop control switches.
A. power light, B. automatic control state pilot lamp, C. open loop control pilot lamp, D. closed-loop control pilot lamp.
Embodiment
To combine specific embodiment and accompanying drawing below, the utility model will be further elaborated.
A kind of control system demonstrator, as shown in Figure 1.Comprise casing and the interior control desk of casing is set and the cavity of placement water circulating apparatus.
Water circulating apparatus comprises lower flume 1, water tower 2, water inlet pipe 3 and rising pipe 4, and water inlet pipe is used to be connected lower flume and water tower with rising pipe.Be provided with water pump 6 in the water inlet pipe, be used for the water of lower flume 1 is pumped into water tower, be provided with the Draw off valve 5 that the water that is used for controlling water tower 2 flows into lower flume 1 in the rising pipe.
Be provided with level sensor in lower flume and the water tower.Wherein the level sensor in the water tower is set to two, last level sensor 12 and following level sensor 13, and last level sensor is used to monitor the last water level of water tower, and following level sensor is used to monitor the following water level of water tower; Be provided with lower flume level sensor 10 in the lower flume, the lower flume level sensor is used to monitor the water level of lower flume.
The lower flume level sensor can also be changed other sensors, like light sensation, positioner etc., accomplishes the demonstration of control system principle of work.
Control desk is positioned at the bottom of casing; Be provided with power module, open loop control module and closed-loop control module in the control desk, the control panel of control desk is provided with power switch 7, hand automatic transfer switch 8, the open loop CS 9 that is connected with the open loop control module, the closed-loop control switch 16 that is connected with the closed-loop control module and is connected binding post with level sensor.
Binding post comprises binding post I, binding post II and binding post III.Wherein the binding post I is connected with the lower flume level sensor, and the lower flume water level that is used for the lower flume level sensor is monitored is transferred to the open loop control module; The binding post II is connected with last level sensor, and the last water level of the water tower that is used for last level sensor is monitored is transferred to the closed-loop control module; The binding post III is connected with following level sensor, is used for the following water level of the water tower that descends level sensor to monitor is transferred to the closed-loop control module.
Also be provided with the pilot lamp that is used for indicating operating status on the control panel of control desk, pilot lamp comprises pilot lamp A, pilot lamp B, pilot lamp C and pilot lamp D.Wherein: pilot lamp A is a power light, is used to indicate the duty of control desk, and promptly when power switch was opened, pilot lamp A lighted simultaneously, and when power switch was closed, pilot lamp A went out.Pilot lamp B is the automatic control state pilot lamp; Be used to indicate control desk whether to be in automatic control state, promptly when the hand automatic transfer switch was in the manual work state, pilot lamp B did not work; When the hand automatic transfer switch was in automatic mode, pilot lamp B lighted.Pilot lamp C is an open loop control pilot lamp, is used to indicate the duty of open loop control module, promptly works as the open loop CS and opens; During the work of open loop control module, pilot lamp C lights, when the open loop CS cuts out; The open loop control module quits work, and pilot lamp C does not work.Pilot lamp D is the closed-loop control pilot lamp, is used to indicate the duty of closed-loop control module, when the closed-loop control switch opens; During the work of closed-loop control module, pilot lamp D lights, when the closed-loop control switch cuts out; The closed-loop control module quits work, and pilot lamp D goes out simultaneously.
The top of casing also is provided with lighting pilot lamp, and the lighting pilot lamp parallel connection is arranged on the two ends of pilot lamp A, and when power switch was opened, lighting pilot lamp was lighted simultaneously.
During the utility model work, at first open chamber door, the plug that plugs in turns on the power switch, and lighting pilot lamp and power light A light, the suitable quantity of water of in lower flume, packing into, and water level will be higher than the position that is provided with of lower flume level sensor.
First kind of duty: the hand automatic transfer switch is allocated to manual control position, and this moment, the water pump energized was started working, and water pump is promoted to the water in the lower flume in the water tower, when the water level of water tower meets the requirements of the position, the hand automatic transfer switch is closed.
Second kind of duty: the hand automatic transfer switch is allocated to automatic control position, and this moment, automatic control state pilot lamp B lighted; Open the open loop CS this moment, open loop control pilot lamp C lights, and the binding post I that is arranged on the control desk is coupled together with lead with the lower flume level sensor that is arranged in the lower flume, and the open loop control module is started working; Open Draw off valve then, the water in the water tower is put into lower flume, when the water level in the lower flume rose to lower flume level sensor position, the open loop control module starts water pump started working, and the water in the lower flume is promoted in the water tower; When the water level in the water tower arrives the water level that requires, close the open loop CS, water pump quits work.
This kind duty is open loop control mode, can realize the interval robotization control of water level equally.
The third duty: the hand automatic transfer switch is allocated to automatic control position, and this moment, automatic control state pilot lamp B lighted; Open the closed-loop control switch this moment, and closed-loop control pilot lamp D lights, and the binding post II that is arranged on the control desk is connected with any one level sensor in being arranged on water tower, and the module of closed-loop control is at this moment started working; When the water level in the water tower was lower than the level sensor of connection, the closed-loop control module starts water pump started working, and the water in the lower flume is promoted in the water tower, and when the water level of water tower was higher than the level sensor of connection, water pump quit work.When needs finish demonstration, close the closed-loop control switch and get final product.
This kind duty is the point type closed-loop control in the close-loop control mode, and this kind duty can make the water pump frequent starting, influences the serviceable life of water pump.
The 4th kind of duty: the hand automatic transfer switch is allocated to automatic control position, and this moment, automatic control state pilot lamp B lighted; Open the closed-loop control switch this moment, and closed-loop control pilot lamp D lights, and the binding post II that is arranged on the control desk is connected with last level sensor in being arranged on water tower, and the binding post III is connected with following level sensor, and the module of closed-loop control is at this moment started working; When the water level of water tower was lower than level sensor, the closed-loop control module starts water pump started working, and in water tower, pumps into water; When the level sensor position was gone up in the water level arrival of water tower, the closed-loop control module is sent instruction quit work water pump.
This kind duty is typical and the best a kind of closed-loop control system working method of control mode.
Claims (4)
1. control system demonstrator; It is characterized in that: comprise casing; Be provided with control desk and the cavity of placing water circulating apparatus in the said casing; Water inlet pipe (3) and rising pipe (4) that said water circulating apparatus comprises lower flume (1), water tower (2) and is used to connect lower flume (1) and water tower (2); Be provided with level sensor in said lower flume (1) and the water tower (2), be provided with the water pump (6) that is used for the water of lower flume (1) is pumped into water tower in the said water inlet pipe, be provided with the Draw off valve (5) that the water that is used for controlling water tower (2) flows into lower flume (1) in the said rising pipe;
Be provided with power module, open loop control module and closed-loop control module in the said control desk, the control panel of control desk is provided with power switch (7), hand automatic transfer switch (8), the open loop CS (9) that is connected with the open loop control module, the closed-loop control switch (16) that is connected with the closed-loop control module and the binding post that is connected with level sensor.
2. control system demonstrator according to claim 1; It is characterized in that: the level sensor in the said water tower (2) is set to two, is used to monitor the last level sensor (12) of water level on the water tower and is used to monitor the following level sensor (13) of water level under the water tower; Be provided with the lower flume level sensor (10) that is used to monitor the lower flume water level in the said lower flume.
3. control system demonstrator according to claim 1; It is characterized in that: said binding post comprises binding post I (11), binding post II (14) and binding post III (15); Said binding post I (11) is connected with lower flume level sensor (10); Binding post II (14) is connected with last level sensor (12), and binding post III (15) is connected with following level sensor (13).
4. control system demonstrator according to claim 1 is characterized in that: also be provided with the pilot lamp that is used for indicating operating status on the control panel of said control desk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202264848U CN202534242U (en) | 2012-05-18 | 2012-05-18 | Control system demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202264848U CN202534242U (en) | 2012-05-18 | 2012-05-18 | Control system demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202534242U true CN202534242U (en) | 2012-11-14 |
Family
ID=47135408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202264848U Expired - Fee Related CN202534242U (en) | 2012-05-18 | 2012-05-18 | Control system demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202534242U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708738A (en) * | 2012-05-18 | 2012-10-03 | 无锡市市北高级中学 | Control system demonstration instrument |
| CN108772369A (en) * | 2018-05-24 | 2018-11-09 | 成都瀚辰光翼科技有限责任公司 | A kind of array liquid-transfering sucker cleaning device and cleaning method |
-
2012
- 2012-05-18 CN CN2012202264848U patent/CN202534242U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708738A (en) * | 2012-05-18 | 2012-10-03 | 无锡市市北高级中学 | Control system demonstration instrument |
| CN108772369A (en) * | 2018-05-24 | 2018-11-09 | 成都瀚辰光翼科技有限责任公司 | A kind of array liquid-transfering sucker cleaning device and cleaning method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20140518 |