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A flywheel simulator with cold backup

A cold backup and flywheel technology, applied in the field of flywheel simulator, can solve the problem of inability to verify the fault-tolerant control and reconfiguration algorithm of the spacecraft attitude control system, the inability to more realistically simulate the flywheel failure situation, and the inability to complete the flywheel fault injection failover function, etc. problem, to achieve the effect of reducing power consumption

Active Publication Date: 2016-04-27
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing flywheel simulators have the following three deficiencies: First, the existing flywheel simulators can only realize the electrical performance simulation function of the physical flywheel, but cannot complete the fault injection and subsequent failover functions of the flywheel, and cannot be more realistic. Fault conditions that may occur during the flywheel’s in-orbit operation; secondly, the existing flywheel simulator cannot realize the cold backup function between the flywheels, and thus cannot verify the fault-tolerant control and reconstruction algorithm in the spacecraft attitude control system; finally, The main controller of the existing flywheel simulator is a fixed-point digital signal processor, but the fixed-point signal processor has the defect that it is not good at handling floating-point numbers, and cannot well meet the high-precision requirements in the aerospace field.

Method used

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  • A flywheel simulator with cold backup
  • A flywheel simulator with cold backup
  • A flywheel simulator with cold backup

Examples

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Embodiment 1

[0025] This embodiment provides a flywheel simulator with cold backup function, such as figure 1 As shown, the flywheel simulator includes a signal gating module, a power management module, a signal conditioning module, a main flywheel module, a backup flywheel module, a digital-to-analog conversion module, and a serial port level conversion module. The power management module is connected to the main flywheel module, the backup flywheel module, and the signal gating module to provide power supply voltage; the signal gating module is connected to the power management module, the main flywheel module, and the backup flywheel module to be used for gating The core voltage and output of the main flywheel module and the backup flywheel module; the signal conditioning module is connected to the main flywheel module and the backup flywheel module, and is used to adjust the input voltage signal to an allowable range; the serial port level conversion module is connected to the main The f...

Embodiment 2

[0030] This example provides an application example of using the flywheel simulator with cold backup function in the semi-physical simulation loop of the satellite attitude control system. Such as Figure 4 As shown, the semi-physical simulation loop of the satellite attitude control system includes a satellite attitude kinematics and dynamics simulation computer, a sensor signal source, a satellite computer and a flywheel simulator with a cold backup function. The working principle of the semi-physical simulation loop is as follows: The sensor signal source receives the physical attitude information from the attitude kinematics and dynamics simulation computer and simultaneously completes the real-time calculation of the satellite attitude. The calculated attitude angle and attitude angular velocity information are sent to the on-board computer. The on-board computer combined with satellite missions calculates real-time control commands, and converts them into voltage signals a...

Embodiment 3

[0032] This example provides a scheme for using a flywheel simulator with cold backup function to switch between the main flywheel and the backup flywheel in the semi-physical simulation loop of the satellite attitude control system. The specific signal flow is Figure 5 As shown, the strobe signal input interface in this example is connected to the on-board computer for strobing the operation of the main flywheel or the backup flywheel. The analog signal input interface is connected with the onboard computer and is used to convert the voltage signal given by the onboard computer into a digital signal. The RS232 serial port interface is connected with the upper computer and is used to receive the fault information output by the upper computer. The telemetry information output interface is connected to the onboard computer, and is used to feed the telemetry information back to the onboard computer. The TTL pulse output port is connected with the satellite attitude kinematics a...

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Abstract

A flywheel simulator with a cold standby function has high-precision calculation capacity and the cold standby function of a flywheel kinetic model. The flywheel simulator comprises a power management module, a signal conditioning module, a signal gating module, a main flywheel module and a standby flywheel module. The main flywheel module and the standby flywheel module are respectively connected with the power management module, the signal conditioning module and the signal gating module to be used for collecting, processing and outputting signals, so that the flywheel kinetic model is resolved; in consideration of faults and disturbance of a flywheel, the flywheel kinetic model is high in calculation precision, the cold standby technology is adopted for the fault condition, and the flywheel simulator can simulate action of switching to a standby flywheel after the current flywheel fails and is suitable for spacecraft attitude control system ground simulation verification in the fields of aviation, aerospace and deep space detection.

Description

Technical field [0001] The invention relates to a flywheel simulator, which can be used in the ground simulation test link of a satellite attitude control system, and is suitable for the field of aerospace and deep space detection. Background technique [0002] Satellite engineering is a high-risk, high-investment, highly complex and high-precision system engineering. The development of a satellite control system. Although mathematical simulation can roughly simulate the performance of the attitude control system, it is difficult to accurately summarize all of it due to the mathematical model. Details, sometimes some local detail errors may cause qualitative changes in system performance; the impact of certain environments or disturbances on the performance of device components is difficult to establish an accurate mathematical model, and the resulting changes in system performance can only It is found through experiments that a complex satellite control system that has been deve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D17/02
Inventor 郭雷乔建忠张培喜雷燕婕李文硕
Owner BEIHANG UNIV