Nano-satellite space heat sink simulator
A technology of simulators and satellites, applied in the field of thermal testing of spacecraft environmental control, to achieve the effects of reduced volume, small thermal inertia, precise and easy control
Inactive Publication Date: 2009-11-18
BEIHANG UNIV
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Problems solved by technology
[0005] In order to solve the shortcomings of the traditional space environment ground simulator, the present invention designs this space heat sink simulator for the thermal test requirements of nano-satellites
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[0040] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.
[0041] Such as figure 1 As shown, a nano-satellite space heat sink simulator 1 of the present invention includes a simulation unit 101 , a data acquisition unit 103 , a controller 102 , a power drive unit 104 and a communication unit 105 .
[0042] The controller 102 receives the heat flow and temperature feedback signals of the analog unit 101 through the data acquisition unit 103, generates a TEC control signal and a fan control signal to the power drive unit 104; the power drive unit 104 drives the TEC control signal and the fan control signal after amplifying TEC 101-1 and fan 101-3 work.
[0043] The communication unit 105 is a channel for data exchange between the upper computer and the controller 102. It receives information from the upper computer for use by the controller 102, and at the same time transmits data processed by the controller 1...
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The invention discloses a nano-satellite space heat sink simulator, which includes a simulation unit, a data acquisition unit, a controller, a power drive unit and a communication unit; the simulation unit includes a thermoelectric cooling chip TEC, a heat flow sensor, a fan, and a temperature sensor A And temperature sensor B and fins; the controller generates the control signal of TEC according to the feedback heat flow value and the given heat flow value obtained by the data acquisition unit as the input of the algorithm controller, so as to realize the good tracking of the feedback heat flow to the given heat flow, that is, to realize heat conduction Good simulation of heat flow to space radiation heat flow. While ensuring heat flow tracking, the heat exported by TEC is conducted to the fins. According to the control requirements, the temperature control of the fan to the fins is realized, and the excess heat is dissipated into the air, realizing the control of the space. Simulation of low temperature and dark background environment. The thermal inertia of the device is small, the response speed is fast, and the volume is small, which realizes the desktop of the nano-satellite thermal test device.
Description
technical field [0001] The invention relates to the technical field of thermal testing of spacecraft environment control, in particular to a nano-satellite space heat sink simulator, which utilizes the active energy transfer capability of TEC and the heat dissipation and temperature control capability of fans to realize space vacuum, low temperature and black background space environment Simulation of radiative heat flow under a spacecraft. Background technique [0002] In order to verify the overall function of the spacecraft in the space environment and ensure the reliable operation of the spacecraft in orbit, sufficient environmental simulation experiments must be carried out on the ground, the most important of which is the thermal test under the simulated space thermal environment. [0003] Nano-satellites refer to small satellites with a weight between 1 and 10kg. They have the advantages of light weight, small size, and low design and manufacturing costs. Environment...
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IPC IPC(8): G05D23/20G05D23/01G05D23/185
Inventor 李运泽刘东晓王玉莹刘佳李运华王浚
Owner BEIHANG UNIV