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Drive mechanism life test environment simulation equipment
The life test environment simulation device for drive mechanisms mainly provides a simulated on-orbit space environment (temperature gradient, vacuum level), allowing the mechanism to operate under this environment according to actual working conditions. It is primarily used for thermal vacuum tests and accelerated life tests of two-dimensional pointing mechanisms for solar tracking devices, thereby fully verifying the reliability of the drive mechanism. This device employs a dual cooling technology using composite working fluids and thermal oil, enabling independent temperature regulation of the heat sink and cold plate, which is beneficial for improving the heating and cooling rates and temperature control accuracy of products with large thermal capacities.
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Device Features
The driving mechanism life test environment simulation device mainly provides a simulated on-orbit space environment (temperature gradient, vacuum degree), allowing the mechanism to operate under this environment according to actual working conditions. It is mainly used for thermal vacuum tests and accelerated life tests of two-dimensional pointing mechanisms for solar orientation devices, thereby fully verifying the reliability of the driving mechanism. This device adopts a dual cooling technology of composite working fluid and heat transfer oil, which can achieve independent temperature adjustment of the heat sink and cold plate, facilitating the increase of heating and cooling rates and temperature control accuracy for products with large thermal capacity.
Technical Performance
1. Vacuum degree: ultimate vacuum ≤ 5×10-5Pa, working vacuum ≤ 1×10-3Pa;
2. Temperature gradients can be formed simultaneously in axial and radial directions, with two temperature gradients in the axial direction and a maximum temperature difference of 50℃;
3. Space temperature range: -100℃ to +150℃;
4. Temperature uniformity: better than ±2℃;
5. Temperature control accuracy: ±1℃;
6. Average heating and cooling rate of the specimen surface: ≥1℃/min;
7. Temperature stability: ≤1℃/h;
8. After the test, the heat sink can quickly return to temperature, with a recovery time not exceeding 1 hour.
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