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A method of controlling a magnetic torque device

A magnetic torque device and control method technology, applied in aircraft, space navigation equipment, space navigation aircraft, etc., can solve the problems of low control precision, complex analog circuit, difficult debugging, etc., and achieve the effect of high precision and easy operation

Active Publication Date: 2018-10-26
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a control method for a magnetic torque device in order to solve the problems of complex analog circuits, difficult debugging and low control precision in the existing control method

Method used

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  • A method of controlling a magnetic torque device
  • A method of controlling a magnetic torque device
  • A method of controlling a magnetic torque device

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Effect test

specific Embodiment approach 1

[0017] Specific implementation mode 1. Combination figure 2 and image 3 Illustrate this embodiment, a kind of control method of magnetic torque device, this method is realized by steps:

[0018] 1. The spaceborne central computer calculates the magnitude and direction of the magnetic moment control command M of the three-axis magnetic torquer according to the output formula T=M×B of the magnetic moment of the magnetic torquer, wherein, T is based on the satellite attitude sensitive components and the attitude control system power The torque obtained by mathematical calculation, B is the size of the geomagnetic field, which can be calculated according to the orbital height or measured by using magnetic field measurement components such as magnetometer or Tesla meter;

[0019] 2. According to the magnetic moment test result of the magnetic torque device, that is, the relationship between the output magnetic moment and the control PWM duty cycle, the on-board central computer ...

specific Embodiment approach 2

[0023] Specific embodiment two, combine figure 2 and image 3 Describe this embodiment, this embodiment is the embodiment of the control method of a kind of magnetic torque device described in specific embodiment one: this method is realized by the following steps:

[0024] A control method of a magnetic torque device, the method is applied to a small satellite, and the maximum output magnetic moment of the magnetic torque device is 15Am 2 , the control cycle of the on-board central computer is 0.5s. Specifically, it is realized by the following steps:

[0025] A. The space-borne center computer calculates the size of the magnetic torque control command M of the magnetic torque device according to the output formula T=M×B of the magnetic torque device (the maximum is M max ) and direction, where T is the torque calculated according to the dynamics of the satellite attitude sensitive components and the attitude control system, B is the magnitude of the geomagnetic field, wh...

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Abstract

A control method for a magnetic torquer, which relates to the field of magnetic torquer control, solves the problems of complex analog circuits, difficult debugging, and low control precision in existing control methods. The magnetic torquer control method of the present invention adopts closed-loop pulse width The control method is based on the magnetic torque control command of the on-board central computer, and the magnetic torque controller generates a PWM pulse with a corresponding duty cycle and loads it on the H-bridge drive circuit for power amplification, outputting to the magnetic torque device, and placing it on the magnetic torque device. The current detection processing circuit on the magnetic torque device circuit will collect and convert the current on the magnetic torque device, provide the current telemetry data to the magnetic torque device controller, and use it for closed-loop control. The control method of the invention is easy to operate and has high precision. This method is also suitable for pulse width control of other inductive loads.

Description

technical field [0001] The invention relates to the field of magnetic torque device control, in particular to a control method for a high-precision magnetic torque device. Background technique [0002] The magnetic torquer is the main actuator for controlling the attitude of the satellite by using the earth's magnetic field. According to the control law, the magnetic torque device is passed with a magnetic current of a certain size and direction to make it generate the required magnetic moment, and the torque is generated under the action of the orbital geomagnetic field, which is used for satellite speed damping and momentum wheel unloading, and realizes the satellite attitude magnetism. control. [0003] Therefore, the high-precision control of the magnetic torque device can improve the satellite magnetic control accuracy and ensure the safety of satellite operation to a greater extent. [0004] At present, the control methods of the magnetic torque device mainly include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/32
CPCB64G1/32
Inventor 周美丽常琳朴永杰金光
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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