High-precision follow-up system

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...

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.

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