High-accuracy flywheel-motor speed measuring device
A technology of flywheel motor and speed measuring device, which is applied to measuring device, space navigation vehicle guiding device, linear/angular velocity measurement and other directions, can solve the problem of low speed measurement accuracy of flywheel motor, etc. simple structure
Inactive Publication Date: 2018-08-21
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
[0005] The present invention provides a high-precision flywheel motor speed measuring device to solve the shortcomings of low-speed measurement accuracy of the existing satellite attitude control flywheel motor
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specific Embodiment approach 1
[0017] Specific implementation mode 1. Combination Figure 1 to Figure 2 Describe this embodiment, a high-precision flywheel motor speed measuring device, including a flywheel motor 1, a gear sensor 2 with a magnetic field sensing surface facing the flywheel motor rotor 1-2, a signal processing circuit board 3, a power signal line 4, and a signal processing circuit board installed Support 5 and magnetic steel 6.
[0018] The flywheel motor 1 includes a flywheel motor stator 1-1 and a flywheel motor rotor 1-2, and tooth crests 1-3 and tooth valleys 1-4 are evenly distributed on the outer periphery of the flywheel motor rotor shaft. The flywheel motor rotor is a ferromagnetic material. The gear teeth of the gear are evenly distributed along the circumferential direction, and the sideline of the gear teeth is in the radial direction, and is parallel to the line connecting the middle point of the tooth tip and the geometric center of the gear. The outer diameter of the rotor of ...
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The invention discloses a device increasing the flywheel-motor speed measuring accuracy, and relates to the technical field of satellite attitude control parts. The defect that the low-speed measuringaccuracy of a flywheel motor is low is overcome. The high-accuracy flywheel-motor speed measuring device comprises a flywheel motor, a gear sensor with the sensitive surface facing a rotator of the flywheel motor, a signal processing circuit board, a power signal line, a signal-processing-circuit-board installing support and magnetic steel. The gear sensor is used for sensing changes of tooth tops and tooth valleys when a peripheral gear of a rotor shaft of the flywheel motor rotates and outputting digital signals or analog signals to be processed through the signal processing circuit board to obtain standard square-wave signals, and the standard square-wave signals are sent to a flywheel-motor controller through a power signal line to obtain angular speed value information of the flywheel motor. According to the high-accuracy flywheel-motor speed measuring device, on the basis of an existing flywheel-motor Hall sensor speed measurement, the speed measuring device is additionally arranged, and the defect that the low-speed measuring accuracy of the flywheel motor is low is overcome; non-contact measuring is adopted, burdens of the structure and electronics of an original system can be avoided, and the high-accuracy flywheel-motor speed measuring device is simple in structure, fast and convenient to install, small in area, light in weight and high in reliability.
Description
technical field [0001] The invention relates to the technical field of satellite attitude control components, in particular to a high-precision flywheel motor speed measuring device. Background technique [0002] The flywheel system of satellite attitude control adjusts the attitude of the satellite by controlling the speed of the flywheel rotor and using the change of its own angular momentum. It has the advantages of high reliability, high control precision and low power consumption. It is the key actuator of modern satellite attitude control. To improve the accuracy of satellite attitude control, the stability and accuracy of the flywheel system must be improved first. Among them, it is very important to improve the speed measurement accuracy of the flywheel motor. [0003] The flywheel system often uses a DC brushless motor as the drive motor, and the control system of the flywheel motor often uses a Hall sensor to measure the speed, which has the advantages of high effi...
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IPC IPC(8): G01P3/481B64G1/24
CPCB64G1/24G01P3/481
Inventor 周美丽徐伟章家保张贵祥朴永杰金光
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI