A large-stroke high-precision intelligent flexible actuator

An intelligent flexible and high-precision technology, applied in the field of flexible actuators, can solve problems such as difficulty in meeting very high-precision pointing and stability control requirements, lack of precise pointing adjustment functions, and limited actuator control output accuracy. Achieve the effect of improving the satellite's agile maneuvering and rapid stability, improving the ability to resist the mechanical environment, and increasing the maximum output force

Active Publication Date: 2019-11-12
BEIJING INST OF CONTROL ENG
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A large-stroke high-precision intelligent flexible actuator
  • A large-stroke high-precision intelligent flexible actuator
  • A large-stroke high-precision intelligent flexible actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The content of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as figure 1 As shown, a large-stroke high-precision intelligent flexible actuator includes: a flexible hinge limit cylinder 1, a flexible hinge 2, a support rod 3, a displacement sensor measured surface 4, a displacement sensor 5, a limit block 6, a top Cover 7, membrane spring combination layer 8, mover installation cover 9, voice coil motor 10, outer cylinder 11, bottom cover 12.

[0028] Such as figure 2 As shown, the voice coil motor 10 includes a voice coil motor mover 13 and a voice coil motor stator 14; the voice coil motor mover 13 is connected to the mover installation cover 9, and the mover installation cover 9 is connected to the limit position by a screw passing through the central screw hole. Block 6 is connected, and the inner ring 15 of the membrane spring composite layer is pressed between the mover...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a large-stroke high-accuracy intelligent flexible actuator which comprises a flexible hinge limiting barrel (1), a flexible hinge (2), a strut (3), a displacement sensor measured face (4), a displacement sensor (5), a limiting block (6), a top cover (7), a membrane spring combined layer (8), a rotor mounting cover (9), a voice coil motor (10), an outer barrel (11) and a bottom cover (12), wherein the voice coil motor (10) comprises a voice coil motor rotor (13) and a voice coil motor stator (14). After installation is completed, by adopting measurement feedback of thelarge-stroke high-accuracy eddy current displacement sensor (5) and control output of the large-stroke rapid response voice coil motor (10), vibration isolation, disturbance vibration inhibition and accurate pointing regulation of the intelligent flexible actuator are implemented. The intelligent flexible actuator disclosed by the invention is simple in structure, large in stroke and high in accuracy and can be widely applied to the fields of ultrahigh accuracy, ultrahigh stability and ultra-sensitive control of spacecrafts.

Description

technical field [0001] The invention belongs to the field of spacecraft control and relates to a 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 stable control u...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/035
CPCH02K41/0356
Inventor 汤亮关新王有懿张科备郝仁剑
Owner BEIJING INST OF CONTROL ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products