A real-time measurement system for the end pose of a hexapod positioning platform

A positioning platform and real-time measurement technology, which is applied in the direction of measuring devices, instruments, and use feedback control, can solve problems such as the difficulty of optical detection of the whole machine, achieve high measurement accuracy, reduce changes in measurement accuracy, and ensure measurement accuracy. Effect

Active Publication Date: 2020-08-21
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

These characteristics will bring great difficulties to the optical detection of optical remote sensors, especially the optical detection of the whole machine.

Method used

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  • A real-time measurement system for the end pose of a hexapod positioning platform
  • A real-time measurement system for the end pose of a hexapod positioning platform
  • A real-time measurement system for the end pose of a hexapod positioning platform

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] In order to make the description of the present disclosure more detailed and complete, the following provides an illustrative description of the implementation modes and specific examples of the present invention; but this is not the only form for implementing or using the specific embodiments of the present invention. The description covers features of various embodiments as well as method steps and their sequences for constructing and operating those embodiments. However, other embodiments can also be used to achieve the same or equivalent functions and step sequences.

[0027] T...

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Abstract

The invention relates to the technical field of measuring equipment, in particular to a real-time measurement system for the end pose of a hexapod positioning platform. It includes: a moving platform, a fixed platform, and more than six retractable grating ruler measuring rods. The device can be used for the six-dimensional closed-loop control of the large-scale six-degree-of-freedom positioning platform in the process of wide-range adjustment. When the moving platform moves to a certain posture, the length change value of the rod is measured by six grating rulers to calculate the real-time position of the moving platform. Position and attitude; the device uses a gapless spline track and a spline bearing to realize the axial telescopic movement of the grating ruler measuring rod and limit the rotation movement of the grating ruler measuring rod to ensure high measurement accuracy. The measuring rod of the grating ruler is a follower rod, which can be extended or shortened with the change of the position and posture of the moving platform. The change in the measurement accuracy caused by this further ensures the high-precision measurement of the pose of the moving platform.

Description

technical field [0001] The invention relates to the technical field of measuring equipment, in particular to a real-time measurement system for the end pose of a hexapod positioning platform. Background technique [0002] The future 3m-level space optical payload has the characteristics of large size, high precision, and difficulty in testing and verification. These characteristics will bring great difficulties to the optical detection of the optical remote sensor, especially the optical detection of the whole machine. According to the experience of the spacecraft R&D process, the time of assembly and testing generally accounts for about 30% to 50% of the entire spacecraft R&D cycle, especially for optical loads, the efficiency of optical inspection and assembly directly affects the development cycle and cost of the entire model. [0003] Therefore, it is necessary to develop a six-degree-of-freedom high-precision special turntable to meet the optical detection and assembly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00G05D3/12
CPCG01B11/002G05D3/12
Inventor 韩春杨姜爱民韩哈斯敖其尔申军立朱明超徐振邦吴清文
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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