CN112462740A - Temperature compensation calibration method for Stirling refrigerator controller - Google Patents
Temperature compensation calibration method for Stirling refrigerator controller Download PDFInfo
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- CN112462740A CN112462740A CN202011338105.XA CN202011338105A CN112462740A CN 112462740 A CN112462740 A CN 112462740A CN 202011338105 A CN202011338105 A CN 202011338105A CN 112462740 A CN112462740 A CN 112462740A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0286—Modifications to the monitored process, e.g. stopping operation or adapting control
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a temperature compensation calibration method for a Stirling refrigerator controller, which comprises the steps of putting the refrigerator controller into a temperature box, connecting a precision reference source into the refrigerator controller in the temperature box, and setting a calibration voltage value of the refrigerator controller to be the same as a voltage value of the precision reference source; heating the refrigerator controller in a set temperature range through the incubator; in the temperature rise process, the microprocessor reads a precision reference source voltage value, calculates a calibrated voltage value by using a compensation calibration parameter of a temperature point of a previous control panel stored in FLASH, calculates the difference between the calibrated voltage value and a calibration voltage value, and adjusts the temperature point compensation calibration parameter to enable the voltage difference value to be zero when the voltage difference value is greater than a temperature drift allowable value of the refrigerator controller; recording the current control board temperature value and the corresponding temperature compensation calibration parameter to the FLASH; the calibration is finished until the temperature is raised to the maximum value. The method reduces the complexity and workload of compensation and improves the efficiency.
Description
Technical Field
The invention belongs to the technical field of electronic circuits, and particularly relates to a temperature compensation method for a Stirling refrigerator controller.
Background
The stirling cryocooler has the advantages of high efficiency, rapid refrigeration, small size, light weight, low power consumption and high reliability, and thus is widely used in military and space fields. Because the environmental temperature range in the military industry and space fields is wide, a temperature compensation circuit needs to be added in the refrigerator controller, and key circuits such as a reference source, a constant current source, an analog-digital converter and the like in the refrigerator controller are subjected to temperature compensation of key parameters according to different environmental temperatures, so that the refrigerator controller can control the refrigerator to operate at a stable speed in a full-temperature range (-55-125 ℃).
In order to solve the above problems, the conventional compensation method is to perform compensation correction according to the temperature drift characteristic of one device in the circuit, and if a plurality of key devices in the circuit, such as a constant current source circuit, a reference source circuit, an analog-to-digital conversion circuit, etc., need to be compensated, the compensation circuit is very complex in design.
Disclosure of Invention
The invention aims to overcome the problem of complex compensation circuit in the prior art, and provides a temperature compensation method for a Stirling refrigerator controller, which reduces the complexity of compensation and the compensation workload; furthermore, a plurality of circuits can be compensated at the same time, and the efficiency is improved.
The technical solution for realizing the purpose of the invention is as follows:
a temperature compensation calibration method for a Stirling refrigerator controller comprises the following calibration steps:
placing a refrigerator controller into an incubator, connecting a precision reference source into the refrigerator controller in the incubator, and setting a calibration voltage value of the refrigerator controller to be the same as a voltage value of the precision reference source;
heating the refrigerator controller in a set temperature range through the incubator;
in the temperature rising process, reading a precision reference source voltage value, calculating by using a compensation calibration parameter of a temperature point of a previous control panel stored in FLASH to obtain a calibrated voltage value, calculating a difference value between the calibrated voltage value and a calibration voltage value, and adjusting the temperature point compensation calibration parameter to enable the voltage difference value to be zero when the voltage difference value is greater than a temperature drift allowable value of a refrigerator controller; recording the current temperature value of the control board of the controller and the corresponding temperature compensation calibration parameters into the FLASH; the calibration is finished until the temperature is raised to the maximum value.
Further, the method also comprises the following operation steps:
when the refrigerator controller normally operates, the temperature compensation calibration parameters corresponding to the stored temperature values are called from the FLASH according to the real-time temperature values of the control panel, the actual voltage accurate values are calculated according to the temperature compensation calibration parameters, and the temperature compensation of the refrigerator controller is completed.
Further, the set temperature range is-55 to 125 degrees.
Further, when the temperature of the incubator rises to 125 ℃, the temperature rise is finished, and the refrigerator controller finishes the calibration process.
Further, when the calibration step is performed, all modules on the control board of the refrigeration machine controller are calibrated at the same time.
Further, when the operating step is executed, all modules on the control board of the refrigerator controller are simultaneously temperature compensated.
Further, in the calibration step, a plurality of refrigerator controllers are placed in the incubator, and modules on control boards in the plurality of refrigerator controllers are calibrated at the same time.
The invention has the advantages that:
the method carries out integral compensation aiming at the temperature drift characteristic of the key parameter of the refrigerator controller, writes the integral calibration compensation parameter into FLASH in a production calibration stage by adopting a digital mode, and calls the calibration compensation parameter from the FLASH by a microprocessor when the refrigerator controller is in formal operation, so that the temperature of the refrigerator is stably controlled, and the technical requirement that the temperature drift is less than 0.5mV in the full temperature range (-55-125 ℃) of the refrigerator controller is met.
The method can simultaneously compensate and calibrate a plurality of key modules (a reference source, a constant current source, an AD (analog-digital) and the like) on the control board in the refrigerator controller, thereby reducing the complexity of respectively compensating different circuit modules and reducing the compensation workload.
The method can compensate a plurality of circuits at the same time, and improves the production efficiency.
Drawings
Fig. 1 is a block diagram of a chiller controller production calibration system.
FIG. 2 is a block diagram of a temperature compensation calibration algorithm in production calibration of a chiller controller.
Fig. 3 is a block diagram of a temperature compensation algorithm for normal operation of the chiller controller.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a refrigerator controller to be calibrated is mounted on a calibration jig plate and placed in a warm box. The precise reference source is connected into a refrigerator controller in the incubator, and the calibration voltage value of the refrigerator controller is set to be the same as the voltage value of the precise reference source through the software of the computer upper computer. The temperature of the incubator is set to be increased from-55 ℃ to 125 ℃, and the controller of the refrigerator placed inside the incubator is heated. And the upper computer software sets and turns on a power supply of the refrigerator controller through serial port communication and enters a temperature compensation calibration state program. And when the temperature of the incubator is increased to 125 ℃ and maintained for 10 minutes, the temperature compensation calibration is completed by arranging a refrigerator controller through a serial port.
As shown in fig. 2, after the program enters the compensation calibration state, the ADC reads the voltage value of the precision reference source, calculates the calibrated voltage value using the compensation calibration parameter of the previous temperature point of the single board stored in the FLASH, calculates the difference between the voltage value and the calibration voltage value, and adjusts the temperature point compensation calibration parameter to make the voltage difference zero when the voltage difference is greater than the temperature drift tolerance of the refrigeration machine controller; recording the current controller single-board temperature value and the corresponding temperature compensation calibration parameter into the FLASH; the calibration is finished until the temperature is raised to the maximum value. And when the temperature of the incubator rises to 125 ℃, the upper computer software controls the refrigerator controller to enter a calibration ending state. And the upper computer software turns off the power supply of the refrigerator controller.
According to the working principle of a refrigerator controller, a PID algorithm is adopted to control a motor to rotate at a certain speed to apply work and compress air to reach a control temperature point through PWM. And the proportional coefficient in the PID algorithm determines the temperature value of the temperature control point. The proportional coefficient is greatly influenced by the reference voltage value on the control panel, AD and the constant current source parameter temperature drift, so the temperature drift needs to be compensated, and the compensated proportional coefficient can meet the requirement of the temperature drift range of the full-temperature-zone temperature control through the PID algorithm.
As shown in fig. 3, when the refrigerator controller operates normally, according to the real-time temperature value of the control board (also called a single board), the temperature compensation calibration parameter corresponding to the stored temperature value is called from the FLASH, and according to the temperature compensation calibration parameter, the actual voltage accurate value is calculated, so as to complete the temperature compensation function.
The method can simultaneously compensate and calibrate a plurality of key modules (a reference source, a constant current source, an AD and the like) on a control board in the refrigerator controller. The method of the invention can also place a plurality of refrigerator controllers in the incubator at one time, and carry out temperature compensation calibration on key modules on control boards in the refrigerator controllers.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A temperature compensation calibration method for a Stirling refrigerator controller is characterized by comprising the following calibration steps:
placing a refrigerator controller into an incubator, connecting a precision reference source into the refrigerator controller in the incubator, and setting a calibration voltage value of the refrigerator controller to be the same as a voltage value of the precision reference source;
heating the refrigerator controller in a set temperature range through the incubator;
in the temperature rising process, reading a precision reference source voltage value, calculating by using a compensation calibration parameter of a temperature point of a previous control panel stored in FLASH to obtain a calibrated voltage value, calculating a difference value between the calibrated voltage value and a calibration voltage value, and adjusting the temperature point compensation calibration parameter to enable the voltage difference value to be zero when the voltage difference value is greater than a temperature drift allowable value of a refrigerator controller; recording the current temperature value of the control board of the controller and the corresponding temperature compensation calibration parameters into the FLASH; the calibration is finished until the temperature is raised to the maximum value.
2. A stirling cooler controller temperature compensation calibration method according to claim 1 further comprising the operating steps of:
when the refrigerator controller normally operates, the temperature compensation calibration parameters corresponding to the stored temperature values are called from the FLASH according to the real-time temperature values of the control panel, the actual voltage accurate values are calculated according to the temperature compensation calibration parameters, and the temperature compensation of the refrigerator controller is completed.
3. The stirling cooler controller temperature compensation calibration method of claim 1, wherein the set temperature is in the range of-55 degrees to 125 degrees.
4. The method of claim 3, wherein the temperature rise is completed when the temperature of the incubator reaches 125 ℃, and the temperature controller terminates the calibration process.
5. A stirling cooler controller temperature compensation calibration method according to claim 1 wherein the calibration step is performed while all modules on the control board of the cooler controller are calibrated simultaneously.
6. A stirling cooler controller temperature compensation calibration method according to claim 1 wherein the operating step is performed with all modules on the control board of the cooler controller simultaneously temperature compensated.
7. A stirling cooler controller temperature compensation calibration method according to claim 1, wherein in the calibration step, a plurality of cooler controllers are placed in the incubator and the modules on the control boards of the plurality of cooler controllers are calibrated.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034919A (en) * | 2021-11-19 | 2022-02-11 | 中国兵器工业集团第二一四研究所苏州研发中心 | Voltage acquisition device based on single chip microcomputer and temperature compensation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319370A (en) * | 1992-08-31 | 1994-06-07 | Crystal Semiconductor, Inc. | Analog-to-digital converter with a continuously calibrated voltage reference |
| US20050197795A1 (en) * | 2004-03-04 | 2005-09-08 | Arne Aas | Method and apparatus of temperature compensation for integrated circuit chip using on-chip sensor and computation means |
| US20110077890A1 (en) * | 2008-07-11 | 2011-03-31 | Bruno Zanetti | Method for thermally compensating a gaging device and thermally compensated gaging station |
| US20120161826A1 (en) * | 2010-12-22 | 2012-06-28 | Atmel Corporation | Compensating dfll with error averaging |
| CN102788659A (en) * | 2011-05-19 | 2012-11-21 | 台湾矽微电子股份有限公司 | Self-operation method for temperature compensation parameter of digital pressure gauge |
| CN106679842A (en) * | 2016-11-28 | 2017-05-17 | 北京航天自动控制研究所 | Temperature measuring method and circuit adopting reference voltage compensation technology |
| CN109945992A (en) * | 2019-03-29 | 2019-06-28 | 上海宜链物联网有限公司 | A kind of calibration method of the electronic tag with temperature sensor |
| CN110954248A (en) * | 2019-12-26 | 2020-04-03 | 上海贝岭股份有限公司 | Temperature sensor with automatic calibration function and calibration method |
-
2020
- 2020-11-25 CN CN202011338105.XA patent/CN112462740B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319370A (en) * | 1992-08-31 | 1994-06-07 | Crystal Semiconductor, Inc. | Analog-to-digital converter with a continuously calibrated voltage reference |
| US20050197795A1 (en) * | 2004-03-04 | 2005-09-08 | Arne Aas | Method and apparatus of temperature compensation for integrated circuit chip using on-chip sensor and computation means |
| US20110077890A1 (en) * | 2008-07-11 | 2011-03-31 | Bruno Zanetti | Method for thermally compensating a gaging device and thermally compensated gaging station |
| US20120161826A1 (en) * | 2010-12-22 | 2012-06-28 | Atmel Corporation | Compensating dfll with error averaging |
| CN102788659A (en) * | 2011-05-19 | 2012-11-21 | 台湾矽微电子股份有限公司 | Self-operation method for temperature compensation parameter of digital pressure gauge |
| CN106679842A (en) * | 2016-11-28 | 2017-05-17 | 北京航天自动控制研究所 | Temperature measuring method and circuit adopting reference voltage compensation technology |
| CN109945992A (en) * | 2019-03-29 | 2019-06-28 | 上海宜链物联网有限公司 | A kind of calibration method of the electronic tag with temperature sensor |
| CN110954248A (en) * | 2019-12-26 | 2020-04-03 | 上海贝岭股份有限公司 | Temperature sensor with automatic calibration function and calibration method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034919A (en) * | 2021-11-19 | 2022-02-11 | 中国兵器工业集团第二一四研究所苏州研发中心 | Voltage acquisition device based on single chip microcomputer and temperature compensation method thereof |
| CN114034919B (en) * | 2021-11-19 | 2024-05-24 | 中国兵器工业集团第二一四研究所苏州研发中心 | Voltage acquisition device based on single chip microcomputer and temperature compensation method thereof |
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