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CN-121977646-A - Multichannel smooth ring test system based on thermal vacuum environment

CN121977646ACN 121977646 ACN121977646 ACN 121977646ACN-121977646-A

Abstract

The invention relates to the technical field of spacecraft ground test, in particular to a multichannel smooth ring test system based on a thermal vacuum environment, which is characterized in that a multichannel smooth ring to be tested is arranged in a thermal vacuum tank, a rotor end of the multichannel smooth ring to be tested is connected with a test end of a thermal vacuum torque sensor through a shifting fork, an insertion loss tester and a cabin penetrating optical flange of the thermal vacuum tank are used for being connected with a stator end of the multichannel smooth ring to be tested, the real-time rotating speed, the rotating moment data and the insertion loss of the measured multichannel optical slip ring are collected and sent to the upper computer, and the upper computer dynamically draws and displays the received insertion loss, rotating moment and rotating speed data, so that synchronous monitoring of the measured multichannel optical slip ring is realized for correlation analysis. The invention realizes real-time and uninterrupted performance monitoring of the multichannel optical slip ring in the thermal vacuum test process, and provides accurate data support for failure analysis.

Inventors

  • WANG ZHEN
  • LI GUANGNING
  • QIN BO
  • LI YONG
  • WANG CHEN
  • LIU XINYUAN
  • HE ZONGWEI

Assignees

  • 中国电子科技集团公司第三十四研究所

Dates

Publication Date
20260505
Application Date
20260128

Claims (8)

  1. 1. A multi-channel smooth ring test system based on a thermal vacuum environment is characterized in that, The device comprises a thermal vacuum motor, a thermal vacuum motor driving controller, a coupler, a thermal vacuum torque sensor, a torque tester, a shifting fork, an insertion loss tester, an upper computer, a special fixture and a thermal vacuum tank cabin penetrating optical flange; The thermal vacuum torque sensor comprises an auxiliary end and a test end, when the thermal vacuum torque sensor is used for testing, the auxiliary ends of the thermal vacuum motor and the thermal vacuum torque sensor are connected through a coupler, a rotor end of a multi-channel optical slip ring to be tested is connected with the test end of the thermal vacuum torque sensor through a shifting fork, the thermal vacuum motor, the thermal vacuum torque sensor and a stator end of the multi-channel optical slip ring to be tested are all fixed through special fixtures, the stator end of the multi-channel optical slip ring to be tested is connected with the inner part of a tank of a thermal vacuum cabin penetrating optical flange, an insertion loss tester is connected with the outer part of the tank of the thermal vacuum tank cabin penetrating optical flange, an insertion loss tester and a torque tester are connected with an upper computer, the thermal vacuum motor is connected with a thermal vacuum motor driving controller, and the thermal vacuum torque sensor is connected with the torque tester; In the testing process, the thermal vacuum motor, the coupler, the thermal vacuum torque sensor and the tested multichannel optical slip ring are positioned in the thermal vacuum tank, and the thermal vacuum motor driving controller, the torque tester, the insertion loss tester and the upper computer are positioned outside the thermal vacuum tank.
  2. 2. The multi-channel smooth ring test system based on a thermal vacuum environment of claim 1, The thermal vacuum motor is of a stepping motor type, the effective value of phase current is 3.0A, the phase resistance is 1.53 omega, the phase inductance is 6.22mH, the holding moment is 1.3N.m, the moment of inertia is 350g.cm 2 , the whole step moment angle is 1.8 degrees, the axial gap is 0.02mm, the radial gap is 0.08mm, the resistance precision is +/-5%, the inductance precision is +/-10%, the insulation resistance is 100 Momega, the radial load is 75N, and the axial load is 15N.
  3. 3. A multi-channel smooth ring test system based on a thermal vacuum environment as claimed in claim 2, wherein, The rotating speed control range of the thermal vacuum motor driving controller is 0-300 rpm.
  4. 4. A multi-channel smooth ring test system based on a thermal vacuum environment as claimed in claim 3, The length of the coupler is 65mm, and the diameter of the coupler is 40mm.
  5. 5. A multi-channel smooth ring test system based on a thermal vacuum environment as claimed in claim 4, wherein, The measurement range of the thermal vacuum torque sensor is 0.001N.m-0.5 N.m, the nonlinearity is +/-0.1% - +/-0.3% F.S, the repeatability is +/-0.1% - +/-0.2% F.S, the precision is +/-0.2% - +/-0.5% F.S, the overload capacity is 150%, the frequency response is 100 mu s, the output level is 5V, the load current is less than 10mA, and the insulation resistance is more than or equal to 200MΩ.
  6. 6. A multi-channel smooth ring test system based on a thermal vacuum environment as claimed in claim 5, wherein, The rotating speed inaccuracy of the moment tester is less than or equal to 0.5%, the moment inaccuracy is less than or equal to 0.5% F.S, the insulation resistance is more than or equal to 200MΩ, the consumed power is less than or equal to 13W, and the moment tester is provided with an RS232 serial port.
  7. 7. The multi-channel smooth ring test system based on a thermal vacuum environment of claim 6, The optical fiber type of the insertion loss tester is SM 9/125, the working wavelength is 1310/1550/850nm, the insertion loss stability is +/-0.02 dB, the insertion loss repeatability is +/-0.02 dB, the power detection range is-75 to +10dBm, the insertion loss test precision is 0-1 dB (+ -0.02 dB)/1-10 dB (+ -0.1 dB)/10-15 dB (+ -0.5 dB), the single measurement time is less than or equal to 0.6S, and the insertion loss online test can be carried out by configuring test software.
  8. 8. The multi-channel smooth ring test system based on a thermal vacuum environment of claim 7, The center height and coaxiality requirements of the hot vacuum motor shaft, the hot vacuum torque sensor and the measured multichannel smooth ring are less than 0.05mm.

Description

Multichannel smooth ring test system based on thermal vacuum environment Technical Field The invention relates to the technical field of spacecraft ground testing, in particular to a multichannel smooth ring testing system based on a thermal vacuum environment. Background In a spacecraft such as a rotating system satellite, a multi-channel optical slip ring is a key component for realizing high-speed and large-capacity optical signal transmission between a rotating platform and a static platform of the spacecraft. The performance of the device directly influences the transmission quality and reliability of spacecraft telemetry data, scientific experiment data and the like. The existing test system can only test the insertion loss and the rotation moment of the multichannel smooth ring at normal pressure, and can not truly reflect the performances of the multichannel smooth ring in a thermal vacuum environment, such as the dynamic change of the insertion loss caused by material deformation, the dynamic change of the rotation moment caused by temperature circulation, and the like. Moreover, because the existing test system cannot capture the dynamic change process of the insertion loss and the rotation moment of the multichannel optical slip ring under the stress action of the thermal vacuum environment, the transient positioning is difficult to carry out when the multichannel optical slip ring appears in the thermal vacuum environment. The existing test system can only test a certain parameter in the insertion loss or the rotation moment, can not synchronously monitor the insertion loss and the rotation moment, and is difficult to carry out fault correlation analysis. The existing test system is completely dependent on manual operation in the test process, has low efficiency and is extremely easy to introduce human test errors. Therefore, there is an urgent need for a system that can synchronize, online, and automatically test the insertion loss and rotational torque of a multi-channel optical slip ring in a thermal vacuum environment. Disclosure of Invention The invention aims to provide a multichannel optical slip ring testing system based on a thermal vacuum environment, and aims to solve the technical problems that an existing insertion loss tester and a digital display torque tester can only independently test the insertion loss and the rotation torque of a multichannel optical slip ring under normal pressure and can not dynamically, real-time and synchronously monitor the insertion loss and the rotation torque of the multichannel optical slip ring under the thermal vacuum environment. The invention provides a multichannel optical slip ring testing system based on a thermal vacuum environment, which comprises a thermal vacuum motor, a thermal vacuum motor driving controller, a coupler, a thermal vacuum torque sensor, a torque tester, a shifting fork, an insertion loss tester, an upper computer, a special fixture and a thermal vacuum tank cabin penetrating optical flange; The thermal vacuum torque sensor comprises an auxiliary end and a test end, when the thermal vacuum torque sensor is used for testing, the auxiliary ends of the thermal vacuum motor and the thermal vacuum torque sensor are connected through a coupler, a rotor end of a multi-channel optical slip ring to be tested is connected with the test end of the thermal vacuum torque sensor through a shifting fork, the thermal vacuum motor, the thermal vacuum torque sensor and a stator end of the multi-channel optical slip ring to be tested are all fixed through special fixtures, the stator end of the multi-channel optical slip ring to be tested is connected with the inner part of a tank of a thermal vacuum cabin penetrating optical flange, an insertion loss tester is connected with the outer part of the tank of the thermal vacuum tank cabin penetrating optical flange, an insertion loss tester and a torque tester are connected with an upper computer, the thermal vacuum motor is connected with a thermal vacuum motor driving controller, and the thermal vacuum torque sensor is connected with the torque tester; In the testing process, the thermal vacuum motor, the coupler, the thermal vacuum torque sensor and the tested multichannel optical slip ring are positioned in the thermal vacuum tank, and the thermal vacuum motor driving controller, the torque tester, the insertion loss tester and the upper computer are positioned outside the thermal vacuum tank. The thermal vacuum motor is of a stepping motor type, the phase current effective value is 3.0A, the phase resistance is 1.53 omega, the phase inductance is 6.22mH, the holding torque is 1.3N.m, the moment of inertia is 350g.cm 2, the whole step torque angle is 1.8 degrees, the axial gap is 0.02mm, the radial gap is 0.08mm, the resistance precision is +/-5%, the inductance precision is +/-10%, the insulation resistance is 100M omega, the radial load is 75N, and the axial load is 15N. Wherein, the contro