Spacecraft control action redistribution method on condition of cross configuration actuating mechanism in fault

A technology of actuators and control functions, applied in the field of reconfigurable control of aerospace vehicles, can solve the problems of difficult implementation of space and weight of aircraft, increase of development costs, etc., achieve the effect of small amount of calculation, guaranteed real-time performance, and broad application prospects

Active Publication Date: 2013-12-25
BEIJING AEROSPACE AUTOMATIC CONTROL RES INST +1
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Problems solved by technology

The implementation of the latter measure not only increases the development cost, but also is often difficult to implement due to the limitations of the space and weight of the aircraft

Method used

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  • Spacecraft control action redistribution method on condition of cross configuration actuating mechanism in fault
  • Spacecraft control action redistribution method on condition of cross configuration actuating mechanism in fault
  • Spacecraft control action redistribution method on condition of cross configuration actuating mechanism in fault

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Embodiment

[0068] Taking the control process of the pitch attitude angle of the longitudinal channel of an aircraft as an example, when there is no fault in the actuator, under the effect of the designed control law, the deviation of the pitch attitude angle during the flight of the aircraft is as follows: image 3 As shown, the pitch attitude angle deviation is controlled within a small range, image 3 It shows that the performance of the control system is good, and the aircraft can fly stably throughout the whole process; if a non-fatal failure in which the actuator 2 is stuck at positive 10 degrees occurs when the aircraft flies to 10 seconds, the control action redistribution method of the present invention is not used, and the Under the same control law as above, the deviation of the pitch attitude angle during the flight of the aircraft is as follows: Figure 4 As shown, the pitch attitude angle deviation increases rapidly, Figure 4 It shows that the pitch attitude angle of the l...

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Abstract

The invention discloses a spacecraft control action redistribution method on the condition of a cross configuration actuating mechanism in fault. The spacecraft control action redistribution method comprises the steps that (1) a fault of an actuating mechanism is located and judged according to state information, collected in real time, of a spacecraft; (2) the size of a tilt angle of a control system actuating mechanism of the cross configuration actuating mechanism under the non-fault circumstance is figured out according to the pre-designed control rules of the spacecraft; (3) the size of the tilt angle of the control system actuating mechanism is recomputed and redistributed according to the configuration state of the cross actuating mechanism and on the basis of the fault location and judgment results; (4) the actuating mechanism swings according to the recomputed and redistributed tilt angle, so that the effective control on the spacecraft is finished.

Description

technical field [0001] The invention relates to the technical field of reconfigurable control of aerospace vehicles. Background technique [0002] With the development of aerospace technology and the diversification of missions, the launch density of aerospace vehicles has increased, the mission requirements have become more complex, and the requirements for the safe and reliable completion of missions by spacecraft have also become higher and higher. Due to the high cost of manufacturing and launching spacecraft, it is especially important to ensure reliable flight every time. One of the measures commonly used at present is to strengthen the quality control of the development and launch process to improve flight reliability; another measure is to configure redundant control system equipment, and use backup equipment to replace a certain equipment when it fails. The implementation of the latter measure not only increases the development cost, but also is often difficult to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/24
Inventor 朱文彪蔡鸿杰
Owner BEIJING AEROSPACE AUTOMATIC CONTROL RES INST
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