A time sequence method for onboard computer to control flywheel
A spaceborne computer and flywheel technology, applied in the computer field, can solve problems such as long running time, interruption or interruption, and high overhead, and achieve the effects of less sending time, reduced overhead, and improved efficiency
Active Publication Date: 2019-02-05
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
When the number of flywheels on the star is large, the command frame sending program or task of this flywheel control method takes a long time to run, takes up a lot of CPU overhead, and has low efficiency. Priority task interruption or interruption
Method used
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Embodiment Construction
[0021] figure 1 with figure 2 They are respectively a connection relationship between the on-board computer and the flywheel; both connection modes can be used to implement the timing method for controlling the flywheel by the on-board computer of the present invention.
[0022] image 3 It is a schematic flow diagram of the flywheel command frame sending task or program of the present invention, which includes the following steps: after entering the flywheel command frame sending task or program, sequentially scan M kinds of flywheel command frame sending identifier states, and then scan each flywheel command frame sending The N flywheels in the identifier registers send the identifier status. If the sending identifier of the Y (Y∈1~N)th flywheel in the sending identifier register of the X (X∈1~M) flywheel command frame is set, and the flywheel has not sent any kind of instruction this time frame, then send the Xth flywheel instruction frame of the Yth flywheel, then set ...
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The invention discloses a timing method for controlling a flywheel by an on-board computer. The timing method utilizes a timer interrupt to periodically inquire about the identification bits in the various instruction frame sending identifier registers of each flywheel, and then according to the sent Whether to send the command frame is judged according to the setting status of the command identifier, and related processing is carried out for the normal reception or reception timeout of the command frame. The sequence method of the present invention can send different types of command frames of multiple flywheels without delay and waiting, and can minimize the sending time of each flywheel to send command frames, which improves the efficiency of the flywheel control by the on-board computer and reduces the time required for the on-board computer to control the flywheel. computer overhead.
Description
technical field [0001] The invention relates to the field of computers, in particular to a timing method for controlling a flywheel by an on-board computer. Background technique [0002] The flywheel is an important execution part of the attitude control on the satellite, and the number is three or more. The communication mode of the flywheel generally adopts the response type. Due to the limitation of the baud rate, the on-board computer needs to control the time interval for sending the flywheel command frame. If the interval is too small, it will be regarded as an invalid command. The on-board computer performs different control operations on the flywheel, and usually needs to send multiple different types of command frames. Usually, in order to avoid conflicts, the onboard computer controls the flywheel to send multiple flywheel instruction frames in a delay time manner. When the number of flywheels on the star is large, the command frame sending program or task of thi...
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IPC IPC(8): G05D1/08
CPCB64G1/244
Inventor 章家保徐伟朴永杰冯汝鹏郑晓云王绍举金光
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI