Incubator based on PID (Proportion Integration Differentiation) control
A technology of constant temperature box and refrigeration chamber, applied in the field of constant temperature box based on PID control, which can solve the problems of insensitivity to temperature adjustment and poor dynamic response, and achieve the effects of good dynamic response, fast rise time and small overshoot
Active Publication Date: 2014-02-05
JINLING INST OF TECH
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[0004] The purpose of the present invention is to provide a thermostat based on PID control, which aims to solve the problems of hysteresis, insensitivity to temperature adjustment and poor dynamic response in the existing thermostat temperature control system
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[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0017] figure 1 Shown is the structure of the constant temperature box based on PID control of the present invention, as shown in the figure, the present invention is realized in this way, a kind of constant temperature box based on PID control comprises heating chamber 1, electric heater 2, ambient temperature sensor 3, Central processing unit 4, single-chip microcomputer 5, temperature sensor 6 in the box, refrigerating unit 7, refrigerating chamber 8. A heating chamber 1 and a refrigeration chamber 8 are arranged in the thermostatic box, an electric heater 2 is installed in the heating chamber...
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The invention discloses an incubator based on PID (Proportion Integration Differentiation) control. The incubator comprises a heating chamber, an electric heater, an environmental temperature sensor, a central processing unit, a single chip microcomputer, an in-box temperature sensor, a refrigerating unit and a refrigerating chamber. The incubator is internally provided with the heating chamber and the refrigerating chamber; the electric heater is mounted inside the heating chamber connected with the central processing unit; the refrigerating unit is mounted in the refrigerating chamber connected with the central processing unit; the in-box temperature sensor is mounted inside the incubator; the environmental temperature sensor is mounted outside the incubator; the in-box temperature sensor and the environmental temperature sensor are connected with the single chip microcomputer; the single chip microcomputer is connected with the central processing unit; a temperature control system of the incubator adopts incremental type PID control. According to the incubator based on the PID control, a compounded control manner is adopted so as to greatly make up the disadvantages caused by only adopting a PID algorithm; the incubator has the characteristics of good dynamic responses, fast rise time and small overshoot and also has the dynamic tracking quality and the stability precision of a PID controller.
Description
technical field [0001] The invention belongs to the field of temperature control equipment, in particular to a constant temperature box based on PID control. Background technique [0002] The cryogenic incubator is often used in the inspection of various performance indicators of aerospace products, information electronic instruments, materials, electrical, electronic products, and various electronic components in a low temperature environment to ensure the reproducibility of environmental conditions in environmental tests. A traditional cryogenic incubator includes a heating device and a cooling device. The heating device includes a heater that provides heat and a power regulating device that adjusts the power of the heater. The heating device and the cooling device use a PID (proportion-integration-differentiation, ratio- Integral-derivative) control mode control, the refrigeration device includes a refrigeration unit, a throttling device to maintain a constant refrigerati...
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Inventor 鲍飞豹
Owner JINLING INST OF TECH