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High-precision follow-up system

A follow-up system, high-precision technology, applied to the parts of TV system, TV, color TV, etc., can solve the problems of monitoring dead angle, poor pointing accuracy, and unable to adjust the monitoring angle by itself, so as to improve real-time performance , Improve the effect of tracking accuracy

Inactive Publication Date: 2020-10-13
XIAN FANGYUANMING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the actual work of the turntable on the market, the control system is often used to remotely control the direction of its rotation and movement. There is a problem that the monitoring angle cannot be adjusted by itself, resulting in a dead angle of monitoring, or the search is performed through the preset scanning route, and the pointing accuracy is poor.

Method used

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Embodiment Construction

[0018] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] The invention provides a high-precision servo system, such as figure 2 As shown, it can be detailed as follows:

[0020] The system initialization module is executed from the power-on of the program, involving all registers, global variables, macro definitions, structures, flags, counting variables, PID parameters, motor position initial parameters, and various output data limit value settings used by the program. And peripheral clock control registers, GPIO registers, VPIF, PSC, UART for initialization configuration.

[0021] After the system initialization is completed, the system enters the interrupt service program, reads the current position of the azimuth and pitch motors sent by the absolute encoder 4, and the serv...

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Abstract

The invention discloses a high-precision follow-up system, and belongs to the technical field of automation. According to the system, an image processing module is matched with an infrared detector module to convert an analog video into a digital signal, then the digital signal is sent to the image processing module for preprocessing, then target detection and dynamic tracking are carried out, andfinally the offset is transmitted to a servo controller. The servo controller takes an offset signal as a given value; and a speed instruction is calculated according to the actual position fed backby the absolute value encoder, the deviation value of the speed instruction and the actual rotating speed is calculated through a pulse width modulation power amplifier to generate corresponding PWM waveform output, and then the driving module drives the rotary table double-shaft direct-current torque motor, so that the infrared detector module is aligned to a target, and automatic following of the target is realized. In order to prevent shafting shaking from causing physical damage to the rotary table in a shutdown state, an electromagnetic lock is controlled by a relay to lock the two shafting. The high-precision follow-up system has the beneficial effects that the steady-state position following error is reduced, and the positioning precision and the servo rigidity are improved.

Description

technical field [0001] The invention relates to a high-precision servo system, in particular to a high-precision servo system based on a double-axis turntable. Background technique [0002] The follow-up turntable is a monitoring product that is widely used in large-scale and long-distance monitoring, such as forests, grasslands, urban fire prevention, airport runways, coastal defense, border defense, and open areas. At present, in the actual work of the turntable on the market, the control system is often used to remotely control the direction of its rotation and movement. There is a problem that the monitoring angle cannot be adjusted by itself, resulting in a dead angle of monitoring, or the search is performed through the preset scanning route, and the pointing accuracy is poor. . In order to improve the follow-up locking tracking effect of the two-axis turntable, a weak target lock-on control method based on the two-axis turntable has gradually become the key. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232G05D3/12
CPCG05D3/12H04N23/695
Inventor 刘继锋宋方王鹏涛李方昊袁方刘洋丁海妮
Owner XIAN FANGYUANMING TECH CO LTD
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