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Intelligent flexible actuator based on distributed flexible structure

A technology of intelligent flexible and flexible structure, which is applied in the direction of aerospace vehicles, aircraft, motor vehicles, etc., can solve the problems of limiting actuator control output accuracy, effective suppression, and failure to meet application requirements, so as to improve the anti-launch initiative Improve the mechanical properties of the segment, improve the accuracy of measurement and control, and increase the effect of radial stiffness

Active Publication Date: 2018-10-12
BEIJING INST OF CONTROL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Limited by the measurement accuracy and measurement bandwidth limitations of traditional attitude sensors (star sensors, gyroscopes), the traditional low-bandwidth attitude control system cannot effectively suppress the influence of various disturbance moments in a wide frequency domain, and only based on satellite attitude control The technical solution to realize the precise and stable pointing control of the payload has been difficult to meet the requirements of very high-precision pointing and stable control under the existing technical conditions; Vibration isolation, disturbance suppression and precise pointing of the actuator to achieve high performance indicators of the load
[0004] However, the currently used actuators are generally only equipped with vibration sensors (such as force sensors, acceleration sensors), so they only have the function of active vibration isolation, and do not have the function of precise pointing adjustment.
And the traditional ordinary hinges (such as ball hinges and Hooke hinges) are used at the joints of the actuators. Due to the existence of friction and gaps, the control output accuracy of the actuators is limited.
And with the continuous increase of satellite load, the continuous improvement of agile maneuvering and rapid stability, the current active vibration isolation actuators with small strokes can no longer meet the application requirements

Method used

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  • Intelligent flexible actuator based on distributed flexible structure
  • Intelligent flexible actuator based on distributed flexible structure
  • Intelligent flexible actuator based on distributed flexible structure

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Embodiment Construction

[0030] The content of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] like figure 1 , Figure 5 , Image 6 As shown, an intelligent flexible actuator based on a distributed flexible structure includes: an upper flexible hinge limiting cylinder 1, an upper flexible hinge 2, a strut 3, a connecting block 4, a lower flexible hinge limiting cylinder 5, a lower Flexible hinge 6, upper membrane spring 7, limit block 8, mover installation cover 9, voice coil motor 10, outer cylinder 11, stator installation cover 12, lower membrane spring 13, displacement sensor DUT 14, displacement sensor 15, Bottom cover16.

[0032] like figure 2 As shown, the voice coil motor 10 includes a voice coil motor mover 17 and a voice coil motor stator 18, and a through hole with a diameter of 10mm is opened on the central axis of the voice coil motor stator 18; the working stroke of the voice coil motor 10 is ±6mm,...

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Abstract

The invention provides an intelligent flexible actuator based on a distributed flexible structure. The intelligent flexible actuator comprises an upper flexible hinge (2), a strut (3), a connecting block (4), a lower flexible hinge (6), an upper film spring (7), a rotor mounting cover (9), a voice coil motor (10), an outer cylinder (11), a stator mounting cover (12), a lower film spring (13), a displacement sensor measured piece (14), a displacement sensor (15) and a bottom cover (16). After installation is completed, vibration isolation, interference suppression of vibration and accurate pointing adjustment of the intelligent flexible actuator are realized by the measurement feedback of the wide-range high-precision eddy current displacement sensor (15) and the control output of the large-stroke fast-response voice coil motor (10). The intelligent flexible actuator adopts the double film springs and a double flexible hinge structure, has high control precision and good expandability,and can be widely applied to the field of ultra-high precision, ultra-high stability and ultra-agile control of a spacecraft.

Description

technical field [0001] The invention relates to the field of spacecraft control, in particular to an intelligent flexible actuator. Background technique [0002] In recent years, with the introduction of a series of future mission requirements such as extremely high-resolution earth observation, high-stable tracking of space moving targets, and high-resolution imaging, extremely high requirements have been placed on the accuracy and stability of satellite control systems. [0003] Limited by the measurement accuracy and measurement bandwidth limitations of traditional attitude sensors (star sensors, gyroscopes), the traditional low-bandwidth attitude control system cannot effectively suppress the influence of various disturbance moments in a wide frequency domain, and only based on satellite attitude control The technical solution to realize the precise and stable pointing control of the payload has been difficult to meet the requirements of very high-precision pointing and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/22B64G1/24
CPCB64G1/22B64G1/24
Inventor 王有懿关新汤亮张科备郝仁剑
Owner BEIJING INST OF CONTROL ENG
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