A single-phase linear Stirling motor temperature control method
A technology of motor temperature and control method, which is applied in the direction of temperature control, temperature control using electric method, non-electric variable control, etc., can solve the problems of high dependence on mathematical model accuracy, difficulty in ensuring refrigeration accuracy, and difficulty in obtaining control effects, etc. Achieving good temperature modulation effect, convenient manual setting and smooth power modulation process
Active Publication Date: 2020-01-03
SOUTHEAST UNIV
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Problems solved by technology
However, due to the high technical cost of the Stirling refrigerator, the Stirling refrigerator is currently mainly used in the military and aerospace fields, and its research in the field of general cooling is still in its infancy, and the research on the drive control of the Stirling machine is still in progress. Mainly for small Stirling motors with low power and low cooling capacity
In the temperature control process of the Stirling motor, due to the nonlinear and hysteresis of the single-phase linear Stirling refrigeration process, the actual cooling power of the motor and the phase voltage also have a nonlinear relationship, and the traditional PID control parameters are manually adjusted. It is cumbersome, the workload is heavy, and it is highly dependent on the accuracy of the mathematical model. It is difficult to obtain a better control effect when the ambient temperature changes; it is also difficult to ensure the refrigeration accuracy in a wide temperature range.
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[0022] The technical solution of the present invention will be further introduced below in combination with specific implementation methods and accompanying drawings.
[0023] This specific embodiment discloses a single-phase linear Stirling motor temperature control method, such as figure 1 shown, including the following steps:
[0024] S1: According to the temperature range T of the applied environment range Take the median point T mid , at T mid The actual cold junction stable temperature of the SLSM motor at temperature T std and the corresponding input side phase voltage U o Sampling and building a relational model table T std =Table1(U o ); U in Table1 o The value distribution should cover the full range of motor working conditions, and more points should be selected appropriately to distribute evenly. Considering the temperature hysteresis and inertia of high-power SLSM motors are large, a sampling point can be set at an interval of about 5V.
[0025] S2: The c...
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The invention discloses a single-phase linear-type Stirling motor temperature control method. Regional temperature adjusting of a wide range is performed on a single-phase linear Stirling motor with kilowatt-grade large power. By using the method, under a requirement of a wide temperature adjusting range, manual setting of a parameter is convenient, a good temperature modulation effect can be acquired in different temperature areas and environment robustness is good. Compared to traditional PID control, an impact on the single-phase linear-type Stirling motor during an adjusting process is less, a power modulation process is smooth, a service life of the motor is prolonged and reliability is enhanced.
Description
technical field [0001] The invention relates to the field of Stirling motor drive control, in particular to a temperature control method for a single-phase linear Stirling motor. Background technique [0002] In recent years, cryogenic technology has developed rapidly to adapt to the development of cutting-edge technology. As an important branch of cryogenic technology, Stirling refrigeration is widely used in military, meteorology, aerospace, cryogenic electronics, cryogenic medicine and other fields, such as in infrared remote sensing, dehumidification and cooling of tank armor and submarines, refrigeration of special electronic equipment, medical refrigerators There are important applications in many aspects such as Stirling refrigerators, and the development prospects of Stirling refrigerators are very broad. At the same time, with the promotion of its application and the improvement of cooling capacity, the Stirling refrigerator with high power and large cooling capaci...
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IPC IPC(8): G05D23/19
CPCG05D23/1931
Inventor 林明耀谭广颖杨公德台流臣谢程洲
Owner SOUTHEAST UNIV