CN2590052Y - Frequency-converter internally-arranged PID controller - Google Patents
Frequency-converter internally-arranged PID controller Download PDFInfo
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- CN2590052Y CN2590052Y CN 02295076 CN02295076U CN2590052Y CN 2590052 Y CN2590052 Y CN 2590052Y CN 02295076 CN02295076 CN 02295076 CN 02295076 U CN02295076 U CN 02295076U CN 2590052 Y CN2590052 Y CN 2590052Y
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- pin
- resistance
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- capacitor
- pid
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Abstract
The utility model discloses a frequency converter built-in PID controller, of which the circuit comprises a PID feedback quantity conditioning loop, namely, a 4-20mA feedback end, and a goal setting and conditioning loop, namely, a 0-10V setting end, wherein, the PID goal setting and conditioning loop is formed by the connection of resistors R1, R2, R3, R4, and R5, capacitors C1, C2, and C3, an amplifier U1 and diodes D1 and D2; the PID feedback quantity conditioning loop is formed by the connection of resistors R7, R8, R9, R10, R11, R12, R13, and R14, capacitors C4 and C5, an amplifier U2 and diodes D3 and D4. Because the utility model can cause the two circuits of the controller to be respectively connected with an MCU in a frequency converter system, and thereby, the PID is integrated in the frequency converter. In this way, the whole constant pressure water supply system device is simplified, the cost of the whole device is lowered, and the price performance ratio of the frequency converter is enhanced.
Description
Technical field the utility model relates to a kind of PID controller, specifically a kind of frequency converter internal PID controller.
Background technology PID closed-loop control generally is used for physical quantity and changes unhappy process control, as controls such as pressure, temperature, feedback signal is generally taken from temperature transmitter, pressure unit etc., during PID control, the feedback signal input channel is analog quantity current signal 4-20mA.When frequency converter is used for the constant pressure water supply system constant pressure air feeding, all need to use a PID controller, what be used to keep-up pressure is constant.In the existing connected mode, the PID controller all is to be to separate with frequency converter, as shown in Figure 1.Like this, just make whole constant pressure water supply system device become comparatively complicated, the cost of whole device is higher, and the ratio of performance to price of frequency converter is just lower.
The summary of the invention technical problem to be solved in the utility model is to propose a kind ofly can simplify whole constant pressure water supply system device, reduce the cost of whole device and improve the frequency converter internal PID controller of the ratio of performance to price of frequency converter greatly.
For solving the problems of the technologies described above, the circuit of the utility model frequency converter internal PID controller comprises that PID feedback quantity conditioning loop is that 4-20mA feedback end and PID goal-setting conditioning loop are that 0-10V sets end two parts, and the connected mode in PID goal-setting conditioning loop is: VI and resistance R
11 pin link to each other resistance R
12 pin and resistance R
21 pin, resistance R
31 pin and capacitor C
11 pin link to each other resistance R
32 pin and amplifier U
13 pin link to each other amplifier U
11 pin and diode D
1The A pin link to each other diode D
1K pin and resistance R
51 pin, amplifier U
12 pin and resistance R
41 pin link to each other resistance R
52 pin and diode D
2A pin, capacitor C
21 pin, resistance R
61 pin link to each other diode D
2The K pin link to each other resistance R with+5V
62 pin and capacitor C
31 pin and VR
1Link to each other resistance R
42 pin, capacitor C
22 pin and capacitor C
32 pin link to each other resistance R respectively with GND
22 pin link to each other with ACM; The connected mode in PID feedback quantity conditioning loop is: AI and resistance R
91 pin and resistance R
71 pin link to each other resistance R
72 pin and resistance R
81 pin link to each other resistance R
92 pin and resistance R
101 pin, capacitor C
41 pin and resistance R
111 pin link to each other resistance R
112 pin and amplifier U
25 pin link to each other amplifier U
27 pin and diode D
3The A pin link to each other diode D
3K pin and amplifier U
26 pin, resistance R
121 pin, resistance R
131 pin link to each other resistance R
132 pin and diode D
4A pin, capacitor C
51 pin and resistance R
141 pin link to each other diode D
4The K pin link to each other resistance R with+5V
142 pin and capacitor C
61 pin and AR
1Link to each other resistance R
122 pin, capacitor C
52 pin, capacitor C
62 pin link to each other resistance R respectively with GND
82 pin, resistance R
102 pin and capacitor C
42 pin link to each other with ACM respectively.
After the utility model has adopted above-mentioned syndeton, the analog quantity input terminal 4-20mA of frequency converter is set by 0-10V signal or inner parameter as feedback signal input terminal desired value, parameter controller is a unit interval to remove to handle signal sampling and output frequency with 10ms, controls rotating speed of motor to reach the constant of pressure.Like this, just above-mentioned two parts circuit of PID controller can be linked to each other with the MCU of frequency convertor system inside respectively during application, thereby PID is integrated in the frequency converter.Like this, can not only make whole constant pressure water supply system device obtain simplifying, and can reduce the cost of whole device greatly, improve the ratio of performance to price of frequency converter.Its principal feature is: 1. the conditioning final output signal is the 0-5V signal, is convenient to the AD sampling; 2. block for the signal unification of negative level and be 0V; 3. level output exceeds the then unified clamper of 5V in 5V.
Description of drawings is described in further detail the utility model below in conjunction with drawings and embodiments.
Fig. 1 is the parts connection diagram of existing constant pressure water supply system;
Fig. 2 is the parts connection diagram that adopts the constant pressure water supply system of the utility model PID controller;
Fig. 3 is the circuit connection diagram of the utility model frequency converter internal PID controller.
Embodiment as shown in Figure 3, the circuit of frequency converter internal PID controller comprises that PID feedback quantity conditioning loop I is that 4-20mA feedback end and PID goal-setting conditioning loop II are that 0-10V sets end two parts, and PID goal-setting conditioning loop I is formed by connecting by following element and mode: VI and resistance R
11 pin link to each other resistance R
12 pin and resistance R
21 pin, resistance R
31 pin and capacitor C
11 pin link to each other resistance R
32 pin and amplifier U
13 pin link to each other amplifier U
11 pin and diode D
1The A pin link to each other diode D
1K pin and resistance R
51 pin, amplifier U
12 pin and resistance R
41 pin link to each other resistance R
52 pin and diode D
2A pin, capacitor C
21 pin, resistance R
61 pin link to each other diode D
2The K pin link to each other resistance R with+5V
62 pin and capacitor C
31 pin and VR
1Link to each other resistance R
42 pin, capacitor C
22 pin and capacitor C
32 pin link to each other resistance R respectively with GND
22 pin link to each other with ACM.PID feedback quantity conditioning loop II is formed by connecting by following element and mode: AI and resistance R
91 pin and resistance R
71 pin link to each other resistance R
72 pin and resistance R
81 pin link to each other resistance R
92 pin and resistance R
101 pin, capacitor C
41 pin and resistance R
111 pin link to each other resistance R
112 pin and amplifier U
25 pin link to each other amplifier U
27 pin and diode D
3The A pin link to each other diode D
3K pin and amplifier U
26 pin, resistance R
121 pin, resistance R
131 pin link to each other resistance R
132 pin and diode D
4A pin, capacitor C
51 pin and resistance R
141 pin link to each other diode D
4The K pin link to each other resistance R with+5V
142 pin and capacitor C
61 pin and AR
1Link to each other resistance R
122 pin, capacitor C
52 pin, capacitor C
62 pin link to each other resistance R respectively with GND
82 pin, resistance R
102 pin and capacitor C
42 pin link to each other with ACM respectively.VR among the PID goal-setting conditioning loop I
1With AR among the PID goal-setting conditioning loop II
1MCU with frequency convertor system inside links to each other respectively.Among Fig. 1 and Fig. 2,1 expression frequency converter, 2 expression motors, 3 expression pipelines, 4 expression PID controllers, 5 expression sensors, the frequency converter of 6 expression band internal PID controllers.
Claims (1)
1, frequency converter internal PID controller, it is characterized in that, its circuit comprises that PID feedback quantity conditioning loop is that 4-20mA feedback end and PID goal-setting conditioning loop are that 0-10V sets end two parts, and the connected mode in described PID goal-setting conditioning loop is: VI and resistance R
11 pin link to each other resistance R
12 pin and resistance R
21 pin, resistance R
31 pin and capacitor C
11 pin link to each other resistance R
32 pin and amplifier U
13 pin link to each other amplifier U
11 pin and diode D
1The A pin link to each other diode D
1K pin and resistance R
51 pin, amplifier U
12 pin and resistance R
41 pin link to each other resistance R
52 pin and diode D
2A pin, capacitor C
21 pin, resistance R
61 pin link to each other diode D
2The K pin link to each other resistance R with+5V
62 pin and capacitor C
31 pin and VR
1Link to each other resistance R
42 pin, capacitor C
22 pin and capacitor C
32 pin link to each other resistance R respectively with GND
22 pin link to each other with ACM; The connected mode in described PID feedback quantity conditioning loop is: AI and resistance R
91 pin and resistance R
71 pin link to each other resistance R
72 pin and resistance R
81 pin link to each other resistance R
92 pin and resistance R
101 pin, capacitor C
41 pin and resistance R
111 pin link to each other resistance R
112 pin and amplifier U
25 pin link to each other amplifier U
27 pin and diode D
3The A pin link to each other diode D
3K pin and amplifier U
26 pin, resistance R
121 pin, resistance R
131 pin link to each other resistance R
132 pin and diode D
4A pin, capacitor C
51 pin and resistance R
141 pin link to each other diode D
4The K pin link to each other resistance R with+5V
142 pin and capacitor C
61 pin and AR
1Link to each other resistance R
122 pin, capacitor C
52 pin, capacitor C
62 pin link to each other resistance R respectively with GND
82 pin, resistance R
102 pin and capacitor C
42 pin link to each other with ACM respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295076 CN2590052Y (en) | 2002-12-26 | 2002-12-26 | Frequency-converter internally-arranged PID controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295076 CN2590052Y (en) | 2002-12-26 | 2002-12-26 | Frequency-converter internally-arranged PID controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2590052Y true CN2590052Y (en) | 2003-12-03 |
Family
ID=33752279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02295076 Expired - Fee Related CN2590052Y (en) | 2002-12-26 | 2002-12-26 | Frequency-converter internally-arranged PID controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2590052Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634304B (en) * | 2008-07-25 | 2011-12-07 | 台达电子工业股份有限公司 | Constant-pressure fluid control method |
| CN101488009B (en) * | 2008-01-16 | 2011-12-21 | 贵阳铝镁设计研究院有限公司 | System for transferring frequency converter PID function by PLC/DCS single-channel correcting feedback |
-
2002
- 2002-12-26 CN CN 02295076 patent/CN2590052Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488009B (en) * | 2008-01-16 | 2011-12-21 | 贵阳铝镁设计研究院有限公司 | System for transferring frequency converter PID function by PLC/DCS single-channel correcting feedback |
| CN101634304B (en) * | 2008-07-25 | 2011-12-07 | 台达电子工业股份有限公司 | Constant-pressure fluid control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG HAILI ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME OR ADDRESS: ZHEJIANG HAILI ELECTRONICS SCIENCE + TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Zhejiang Haili Electronic Technology Co., Ltd. Patentee before: Haili Electronic Science & Technology Developing Co., Ltd., Zhejiang Prov. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031203 Termination date: 20100126 |