CN203528824U - Flight deck temperature adjusting system based on PID cascade control - Google Patents
Flight deck temperature adjusting system based on PID cascade control Download PDFInfo
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- CN203528824U CN203528824U CN201320626077.0U CN201320626077U CN203528824U CN 203528824 U CN203528824 U CN 203528824U CN 201320626077 U CN201320626077 U CN 201320626077U CN 203528824 U CN203528824 U CN 203528824U
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Abstract
The utility model discloses a flight deck temperature adjusting system based on PID cascade control. The flight deck temperature adjusting system comprises a temperature sensor, temperature adjusting controllers, a power amplifying circuit and an electrically operated mechanism. The temperature adjusting controllers comprise the main PID temperature controller and the auxiliary PID temperature controller, the main PID temperature controller is connected with the electrically operated mechanism through the power amplifying circuit, the input end of the auxiliary PID temperature controller is connected with the temperature sensor, and the output end of the auxiliary PID temperature controller and an electrically operated valve position sensor of the electrically operated mechanism are connected with the main PID temperature controller through a differential circuit. According to the flight deck temperature adjusting system based on PID cascade control, the digital PID temperature controllers are used for replacing a spiral spring type temperature controller in an existing system, and the dynamic performance and the steady-state performance of the system are improved at the same time, the working reliability of the system is further improved; the PID temperature controllers are connected in a cascade control mode according to the characteristic that temperature adjustment of a flight deck has large capacity lag, the response speed of the system can be improved, the real-time performance of the system is improved and the anti-interference performance and the self-adaptive capacity of the system are also enhanced.
Description
Technical field
The utility model belongs to temperature control technology field, particularly a kind of driving compartment temperature variotrol of controlling based on PID tandem.
Background technology
Whether aircraft cockpit temperature traverse depends on the heating load of the tempering air that enters driving compartment and the balance between driving compartment self-radiating amount.When heating load is greater than heat dissipation capacity, the temperature of driving compartment will raise, otherwise its temperature reduces.Because along with the conversion in season and the change of flying height and speed, the heat dissipation capacity of aircraft cockpit changes thereupon, thereby make the temperature departure setting value of driving compartment.And driving compartment is too high or too low for temperature, all can affect aviator's normal work.In order to allow aviator execute the task under best temperature, must the performance-oriented driving compartment temperature variotrol of equipment on aircraft.
Driving compartment temperature variotrol is comprised of temperature controller, power amplification circuit and motor drive mechanism conventionally, and it can, according to the variation of driving compartment temperature, regulate the temperature of the tempering air that enters driving compartment, thereby driving compartment temperature is remained on to setting value automatically.In existing driving compartment temperature variotrol, temperature controller relies on double metal spiral spring to experience the height of driving compartment temperature, produce distortion, drive lever that movable contact and " cold ", " heat " contact are connected, drive the motor drive mechanism in air dispenser to rotate, change the aperture of hot and cold valve simultaneously, to regulate the temperature of the tempering air that enters driving compartment, thereby driving compartment temperature is regulated.Obviously, owing to having gap between movable contact and hot and cold contact, determine that prevailing system exists adjusting dead band, affect its accuracy, and be to improve its accuracy, just must dwindle the gap existing between hot and cold contact.But the too small system that easily makes again in contact gap produces " self-vibration " phenomenon, affects the stability of system, therefore, the intrinsic drawback that prevailing system exists dynamic property and static properties not to take into account.In addition, contact, because the uncertain factors such as break-make causes repeatedly burn or bonding not only have a strong impact on the functional reliability of system, has also increased the complexity of Support work greatly.
Utility model content
The purpose of this utility model is to provide a kind of driving compartment humidity control system of controlling based on PID tandem, improves existing system and has the insensitive defect of adjusting.
The technical scheme that the utility model addresses the above problem is: a kind of driving compartment humidity control system of controlling based on PID tandem, comprise the temperature sensor for detection of driving compartment temperature, temperature controller, power amplification circuit and motor drive mechanism, it is characterized in that, described temperature controller comprises main PID temperature controller and secondary PID temperature controller, the mouth of main PID temperature controller is connected with motor drive mechanism by power amplification circuit, the input end of secondary PID temperature controller connects temperature sensor, the motorized valve position transduser of the mouth of secondary PID temperature controller and motor drive mechanism is connected with the input end of main PID temperature controller through difference channel.
Press such scheme, described main PID temperature controller is identical with the structure of secondary PID temperature controller, comprises microprocessor, to the communicating circuit of upper computer, external input signal sample circuit, for controlling the relay group of motor drive mechanism and for the power supply to controller power supply; Described to the communicating circuit of upper computer, external input signal sample circuit be connected with microprocessor respectively for controlling the relay group of motor drive mechanism.
Press such scheme, described main PID temperature controller and secondary PID temperature controller also comprise temperature indicator, and temperature indicator is connected with microprocessor.
Press such scheme, described main PID temperature controller and secondary PID temperature controller also comprise power-down protection apparatus, and power-down protection apparatus is connected with microprocessor.
Press such scheme, described microprocessor is the 8-bit microprocessor AT89C51 of Atmel company; The described communicating circuit to upper computer comprises independently CAN communication controller SJA1000, CAN bus transceiver PCA82C250 and High-Speed Coupled Device 6N137, and SJA1000 is connected with PCA82C250 by photoelectrical coupler 6N137; The A/D conversion chip ADC0832 that described external input signal sample circuit is two 8 bit resolutions.
Press such scheme, described temperature indicator comprises 8 dynamic charactrons and MAX7221 chip.
Press such scheme, described power-down protection apparatus is house dog X5054 chip.
Press such scheme, described main PID temperature controller also comprises with secondary PID temperature controller the keyboard being connected with 8-bit microprocessor AT89C51, and the given value of driving compartment temperature can be set by keyboard.
The principle of the utility model device is:
The beneficial effect that the utility model device brings is:
1. adopt digital pid temperature controller to replace the helical spring type temperature controller in existing system, not only make the dynamic property of system and steady-state behaviour improve simultaneously, also improved the reliability of system works.
2. according to driving compartment temperature, regulate the feature that has larger capacity lag, the mode that PID temperature controller is controlled with tandem is applied to driving compartment humidity control system, not only can accelerate the speed of response of system, improve its real-time, but also the Immunity Performance of system, adaptive ability are enhanced, thereby make system there is very strong commonality.
Accompanying drawing explanation
Fig. 1 is the driving compartment temperature variotrol fundamental diagram in the utility model background technology;
Fig. 2 is the hardware structure diagram of the PID temperature controller of the utility model embodiment;
Fig. 3 is the tandem control drawing of the driving compartment temperature variotrol of the utility model embodiment;
Fig. 4 is the thermoregulator the simulation experiment result figure of the utility model aircraft driving compartment.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
In embodiment of the present utility model, as shown in Figure 3, a kind of driving compartment humidity control system of controlling based on PID tandem, comprise temperature sensor, temperature controller, power amplification circuit and motor drive mechanism, it is characterized in that, described temperature controller comprises main PID temperature controller and secondary PID temperature controller, main PID temperature controller is connected with motor drive mechanism by power amplification circuit, the input end of secondary PID temperature controller connects temperature sensor, the motorized valve position transduser of the mouth of secondary PID temperature controller and motor drive mechanism is connected with main PID temperature controller through difference channel.
Main PID temperature controller is identical with the structure of secondary PID temperature controller, as shown in Figure 2, comprise microprocessor, to the communicating circuit of upper computer, external input signal sample circuit, for controlling the relay group of motor drive mechanism and for the power supply to controller power supply; To the communicating circuit of upper computer, external input signal sample circuit be connected with microprocessor respectively for controlling the relay group of motor drive mechanism; Wherein, Microprocessor is the 8-bit microprocessor AT89C51 of Atmel company; The communicating circuit of upper computer is comprised to independently CAN communication controller SJA1000, CAN bus transceiver PCA82C250 and High-Speed Coupled Device 6N137, and SJA1000 is connected with PCA82C250 by photoelectrical coupler 6N137; The common communicating circuit forming with upper computer of CAN communication controller SJA1000, CAN bus transceiver PCA82C250 and High-Speed Coupled Device 6N137 independently.Microprocessor AT89C51 is responsible for SJA1000 initialization, adopts PCA82C250 and the SJA1000 chip of observing CAN2.0A agreement to transmit data, can make system communication quick, effective and reliable.Between SJA1000 and PCA82C250, by photoelectrical coupler 6N137, be connected, can realize the electrical isolation between node in bus; External input signal sample circuit is the A/D conversion chip ADC0832 of two 8 bit resolutions, and its highest resolution can reach 256 grades, adapts to general analog quantity conversion requirement.Temperature sensor adopts MTS-102, by differential amplifier, amplifies, and making its sensitivity is 1 ℃/20mv, differential amplifier working power is 5V, and its output maxim is 3.6V, therefore, the measurement range of temperature sensor is-40 ℃～60 ℃, can meet the use needs of driving compartment temperature adjustment.
Main PID temperature controller and secondary PID temperature controller also comprise temperature indicator that 8 dynamic charactrons and MAX7221 chip form and for the house dog X5054 chip of power-down protection apparatus; 8 dynamic charactrons are connected with microprocessor with MAX7221 chip, and house dog X5054 chip is connected with microprocessor.
In order to guarantee the safety of significant data, 8-bit microprocessor AT89C51 has also connected the expansion of SRAM6264 treater as it, deposits important parameter, and the trouble free service of whole module is safeguarded in loss of data when preventing from resetting.
For easy and simple to handle, main PID temperature controller also comprises with secondary PID temperature controller the keyboard being connected with 8-bit microprocessor AT89C51, and the given value of driving compartment temperature can be set by keyboard.
The mode that PID temperature controller is controlled with tandem is applied to driving compartment humidity control system, and its control loop as shown in Figure 3.Motor drive mechanism is placed in to subloop, to utilize subloop to eliminate electromagnet inertia and the impact of machinery inertial on major loop of motor drive mechanism, thereby has improved the overall performance of system.
Take aircraft as example, utilize simulink to carry out emulation experiment to this system, obtained comparatively desirable experiment effect, the experimental result when driving compartment desired temperature is 16 ℃ as shown in Figure 4.
PID controller can be eliminated error by integral action, by differential, control and dwindle overshoot, thereby the steady-state behaviour of system and dynamic property are got a promotion simultaneously, not only overcome the solid drawback that relay thermoregulating system dynamic property and steady-state behaviour can not be taken into account, but also improved the reliability of system.By PID tandem, control, by accelerating the speed of response of system, strengthen its real-time, and the antijamming capability of system, adaptive ability be also improved, thereby make system there is very strong commonality, be adapted at promoting the use of on other machine type.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (8)
1. a driving compartment humidity control system of controlling based on PID tandem, comprise the temperature sensor for detection of driving compartment temperature, temperature controller, power amplification circuit and motor drive mechanism, it is characterized in that, described temperature controller comprises main PID temperature controller and secondary PID temperature controller, the mouth of main PID temperature controller is connected with motor drive mechanism by power amplification circuit, the input end of secondary PID temperature controller connects temperature sensor, the motorized valve position transduser of the mouth of secondary PID temperature controller and motor drive mechanism is connected with the input end of main PID temperature controller through difference channel.
2. driving compartment humidity control system according to claim 1, it is characterized in that, described main PID temperature controller is identical with the structure of secondary PID temperature controller, comprises microprocessor, to the communicating circuit of upper computer, external input signal sample circuit, for controlling the relay group of motor drive mechanism and for the power supply to controller power supply; Described to the communicating circuit of upper computer, external input signal sample circuit be connected with microprocessor respectively for controlling the relay group of motor drive mechanism.
3. driving compartment humidity control system according to claim 2, is characterized in that, described main PID temperature controller and secondary PID temperature controller also comprise temperature indicator, and temperature indicator is connected with microprocessor.
4. driving compartment humidity control system according to claim 2, is characterized in that, described main PID temperature controller and secondary PID temperature controller also comprise power-down protection apparatus, and power-down protection apparatus is connected with microprocessor.
5. driving compartment humidity control system according to claim 2, is characterized in that, described microprocessor is the 8-bit microprocessor AT89C51 of Atmel company; The described communicating circuit to upper computer comprises independently CAN communication controller SJA1000, CAN bus transceiver PCA82C250 and High-Speed Coupled Device 6N137, and SJA1000 is connected with PCA82C250 by photoelectrical coupler 6N137; The A/D conversion chip ADC0832 that described external input signal sample circuit is two 8 bit resolutions.
6. driving compartment humidity control system according to claim 3, is characterized in that, described temperature indicator comprises 8 dynamic charactrons and MAX7221 chip.
7. driving compartment humidity control system according to claim 4, is characterized in that, described power-down protection apparatus is house dog X5054 chip.
8. driving compartment humidity control system according to claim 5, is characterized in that, described main PID temperature controller also comprises with secondary PID temperature controller the keyboard being connected with 8-bit microprocessor AT89C51, and the given value of driving compartment temperature can be set by keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626077.0U CN203528824U (en) | 2013-10-11 | 2013-10-11 | Flight deck temperature adjusting system based on PID cascade control |
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| CN201320626077.0U CN203528824U (en) | 2013-10-11 | 2013-10-11 | Flight deck temperature adjusting system based on PID cascade control |
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| CN201320626077.0U Expired - Fee Related CN203528824U (en) | 2013-10-11 | 2013-10-11 | Flight deck temperature adjusting system based on PID cascade control |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105059552A (en) * | 2015-08-19 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Aircraft cabin temperature regulating method based on three-wheel high-pressure water removing system |
| CN105667804A (en) * | 2014-11-19 | 2016-06-15 | 中国航空工业集团公司西安飞机设计研究所 | Method for calculating air feed temperature target of cabin of large airplane |
| CN105947221A (en) * | 2016-06-01 | 2016-09-21 | 中国航空工业集团公司西安飞机设计研究所 | Cabin temperature open-loop control system |
| CN106081121A (en) * | 2016-06-01 | 2016-11-09 | 中国航空工业集团公司西安飞机设计研究所 | A kind of cabin temperature adaptive control system |
| GB2544092A (en) * | 2015-11-06 | 2017-05-10 | Bae Systems Plc | Aircraft environmental control system |
| GB2544091A (en) * | 2015-11-06 | 2017-05-10 | Bae Systems Plc | Aircraft environmental control system |
| GB2544093A (en) * | 2015-11-06 | 2017-05-10 | Bae Systems Plc | Aircraft environmental control system |
| WO2017077308A1 (en) * | 2015-11-06 | 2017-05-11 | Bae Systems Plc | Aircraft environmental control system |
| CN106892122A (en) * | 2015-12-21 | 2017-06-27 | 中国航空工业集团公司西安飞机设计研究所 | The control method of cockpit temperature control system under a kind of aircraft engine transition status |
| US10273011B2 (en) | 2015-11-06 | 2019-04-30 | Bae Systems Plc | Aircraft environmental control system |
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2013
- 2013-10-11 CN CN201320626077.0U patent/CN203528824U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105667804A (en) * | 2014-11-19 | 2016-06-15 | 中国航空工业集团公司西安飞机设计研究所 | Method for calculating air feed temperature target of cabin of large airplane |
| CN105059552B (en) * | 2015-08-19 | 2017-03-08 | 中国航空工业集团公司西安飞机设计研究所 | A temperature regulation method for aircraft cockpit based on three-wheel high-pressure water removal system |
| CN105059552A (en) * | 2015-08-19 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Aircraft cabin temperature regulating method based on three-wheel high-pressure water removing system |
| GB2544093B (en) * | 2015-11-06 | 2018-10-17 | Bae Systems Plc | Means for updating control laws in an aircraft environmental control system |
| US10343782B2 (en) | 2015-11-06 | 2019-07-09 | Bae Systems Plc | Aircraft environmental control system |
| US10273011B2 (en) | 2015-11-06 | 2019-04-30 | Bae Systems Plc | Aircraft environmental control system |
| GB2544092A (en) * | 2015-11-06 | 2017-05-10 | Bae Systems Plc | Aircraft environmental control system |
| GB2544091A (en) * | 2015-11-06 | 2017-05-10 | Bae Systems Plc | Aircraft environmental control system |
| GB2544093A (en) * | 2015-11-06 | 2017-05-10 | Bae Systems Plc | Aircraft environmental control system |
| WO2017077308A1 (en) * | 2015-11-06 | 2017-05-11 | Bae Systems Plc | Aircraft environmental control system |
| GB2544092B (en) * | 2015-11-06 | 2018-05-09 | Bae Systems Plc | Increasing gain of a control signal generator in an aircraft environmental control system |
| GB2544091B (en) * | 2015-11-06 | 2018-08-29 | Bae Systems Plc | Modifying gain of a signal amplifier in an aircraft environmental control system |
| CN106892122A (en) * | 2015-12-21 | 2017-06-27 | 中国航空工业集团公司西安飞机设计研究所 | The control method of cockpit temperature control system under a kind of aircraft engine transition status |
| CN106081121A (en) * | 2016-06-01 | 2016-11-09 | 中国航空工业集团公司西安飞机设计研究所 | A kind of cabin temperature adaptive control system |
| CN105947221A (en) * | 2016-06-01 | 2016-09-21 | 中国航空工业集团公司西安飞机设计研究所 | Cabin temperature open-loop control system |
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