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Active vision non-contact type servomechanism parameter measurement method and apparatus thereof

A servo-mechanism, non-contact technology, applied in the field of computer vision, can solve problems such as inability to apply accurate measurement, and achieve the effect of eliminating smearing, reducing difficulty, and simplifying processing

Inactive Publication Date: 2009-05-06
BEIHANG UNIV
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Problems solved by technology

[0010] Due to the above limiting factors, this patent cannot be applied to the field of precise measurement of motion parameters of servo devices with large rotation angle range and high speed

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  • Active vision non-contact type servomechanism parameter measurement method and apparatus thereof
  • Active vision non-contact type servomechanism parameter measurement method and apparatus thereof
  • Active vision non-contact type servomechanism parameter measurement method and apparatus thereof

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Embodiment Construction

[0094] See figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, its specific implementation is as follows:

[0095] (1) An active visual non-contact servomechanism parameter measurement device, which is composed of a measurement screen 1, a servomechanism installation platform 2, an image acquisition and processing system, and a red laser light source 3: a red laser light source is installed on the servomechanism 4 to be tested. Optical laser light source 3, which is placed on the servo mechanism installation platform 2 and placed in front of the measurement screen 1, a digital camera 5 is placed behind the servo mechanism 4 to be measured to image the measurement screen 1, and the image data is transmitted to the computer through the image acquisition card 7 System 6 processing.

[0096] The image acquisition and processing system is composed of a high-resolution digital camera 5, a computer system 6 and image measurement software....

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Abstract

The invention provides an active vision non-contact servo mechanism parameter measuring device, consisting of a measuring screen, a servo mechanism mounting platform, an image acquiring and processing system, and a red light laser light source, wherein a servo mechanism to be detected is provided with the red light laser light source which is positioned on the servo mechanism mounting platform and is arranged in front of the measuring screen, a digital camera is arranged behind the measuring screen to image on the screen. Firstly, the device shoots a picture of a gridiron pattern on the measuring screen by the camera which is demarcated; secondly, the servo mechanism controls a main frame to give a command so as to control the rotation of the servo mechanism to be detected, a computer extracts laser point coordinates of the image, the rotational angle at each moment of the servo mechanism to be detected is calculated and recorded in real time, the motion parameters of the servo mechanism to be detected such as the angular velocity, the pointing accuracy, and the overshoot are calculated by the rotational angle; the measuring method is simple, convenient and flexible, and the device and the measuring method realize the measurement in real time and with high accuracy of the movement parameters of a biaxial servo mechanism through the non-contact way.

Description

(1) Technical field [0001] The invention relates to an active visual non-contact servo mechanism parameter measurement method and its device, which realizes the pointing accuracy, rotation angle range, angular velocity, angular acceleration, overshoot and other parameters of the two-axis servo mechanism in a non-contact manner Real-time high-precision measurement. It belongs to the field of computer vision technology. (2) Background technology [0002] The servo mechanism is a mechanical device widely used in many fields, such as in satellite antennas, radar antennas and other equipment, where there are strict requirements on the performance parameters of the servo mechanism. The traditional measurement method is to measure the rotation angle and angular velocity of each axis separately, which can be divided into contact mechanical measurement method and non-contact optical measurement method. These methods not only complicate the installation and change the structure of t...

Claims

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Application Information

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IPC IPC(8): G01D21/02G01B11/00G01B11/26
Inventor 张弘贾瑞明李璐穆滢王磊李岳成白以成张奎周易
Owner BEIHANG UNIV
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