A compound scheme on parameters identification and adaptive compensation of nonlinear friction disturbance for the aerial inertially stabilized platform

An Improved Fuzzy Neural Network Compound Control Scheme for Inertially Stabilized Platform for Aerial Remote Sensing Applications

“…For a high-resolution aerial remote sensing system, it needs the inertially stabilized platform (ISP) to isolate the attitude changes of an aircraft in the directions of three axes and to reject the multisource disturbances in real time whether they are inside or outside of the aircraft body; therefore, the ISP is a key component for an aerial remote sensing system, which is mainly used to hold and control the line of sight (LOS) of the imaging sensors keeping steady in the inertial space [1][2][3][4][5]. The first fundamental objective of an ISP is to help imaging sensors to obtain high-resolution images of the target.…”

“…It is a principal issue for the control system of the ISP to minimize the effects of disturbances on the ISP. In [5], a compound scheme on parameter identification and adaptive compensation of nonlinear friction disturbance is proposed to improve the stabilization accuracy of the ISP. In [6], a dual-rate-loop control method based on a disturbance observer (DOB) of angular acceleration is proposed to improve the control accuracy and stabilization of the ISP.…”

A Novel Separated Position and Orientation System Integrated with Inertially Stabilized Platform

“…However, BUAA fixes the centralized POS on the shell of camera; meanwhile, the open-loop fiber optic gyros (or MEMS gyros) and quartz accelerometers are installed on each gimbal for rate feedback and initial leveling [13,14]. The traditional scheme in which imaging payloads, centralized POS and ISP, are designed independently and assembled separately requires the special installation space for POS to be reserved in or besides the imaging payloads, increasing the difficulty in designing imaging payloads independently [15]. Moreover, the gravity center of imaging payloads and POS supported by ISP changes when different types of centralized POS are adopted which introduces eccentric torque, and the torque is not easy to be eliminated by balance weight [16][17][18].…”

Extended state observer/proportion integration differentiation compound control based on dynamic modelling for an aerial inertially stabilized platform

“…[1][2][3][4][5] In an aerial remote sensing system, the LOS of sensors must track accurately a fixed or moving target from an aircraft platform. Due to the effects of internal and external disturbances of the aircraft platform on the LOS, the imaging quality is seriously degenerated.…”

“…Therefore, a three-closed-loop compound proportion integration differentiation (PID) control scheme is an effective method for the ISP, which is composed of a current loop, a speed loop and a position loop. 5 However, the performances of the ISP only depending on the PID strategy cannot realize the high tracking accuracy due to the influences of multi-source disturbances. So, in order to effectively reject various disturbances, many methods are proposed.…”