Frame type three degree-of-freedom cradle head control system and control method thereof

Abstract

The invention discloses a frame type three degree-of-freedom cradle head control system and a control method thereof. The frame type three degree-of-freedom cradle head control system comprises an outer frame, a middle frame, an inner frame, a motor used for controlling the frames, reducing gearings and a sensor module used for detecting the position and the speed. The frame type three degree-of-freedom cradle head control system is characterized in that the fine direction tuning and the pitching control of the cradle head are directly driven by adopting a rare earth permanent magnet direct current torque motor. The outer frame adopts a common direct current motor and a pair of reducing gearings to realize the coarse tuning of the direction, the structure of the middle frame is directly driven by the rare earth permanent magnet direct current torque motor so as to realize the pitching motion control a shooting device, and the structure of the inner frame is directly driven by the rare earth permanent magnet direct current torque motor so as to realize the fine direction tuning of the shooting device. The invention further provides a control method of the frame type three degree-of-freedom cradle head control system. The frame type three degree-of-freedom cradle head control system disclosed by the invention has the advantages of large mechanical strength, favorable vibration resisting performance, favorable image stabilizing performance, simple structure and light weight, and is suitable for aviation shooting and multiple aviation applications.

Description

technical field [0001] The invention relates to the field of monitoring equipment research, in particular to a frame-type three-degree-of-freedom pan-tilt control system and a control method thereof. Background technique [0002] At present, there are more and more application occasions for video surveillance systems, especially in the fields of aerial photography, environmental monitoring, public security, fire fighting, rescue and civilian use. In order to enable the camera to adjust multiple angles in real time as needed, a multi-degree-of-freedom pan / tilt came into being. The multi-degree-of-freedom pan / tilt is to install equipment such as a CCD camera or an infrared detector on the pan / tilt, and install the pan / tilt on the carrier, wherein the pan / tilt is also equipped with a sensor, and the pan / tilt control system controls the camera or camera according to the sensor signal. The azimuth and elevation position of the infrared detector is controlled. However, the accur...

AI Technical Summary

Problems solved by technology

However, the accuracy of the current multi-degree-of-freedom pan / tilt is not high, and for some fields that require high precision, such as military monitoring, it is still impossible to achieve accurate measurement

[0003] At present, a lot of research has been carried out at home and abroad, some of which are not high in precision, and some of which are implemented with complex mechanical structures and control systems, which are large and heavy, which is not conducive to popularization and application.

Images