Active disturbance rejection control (ADRC) has been gaining attention in recent years and shown its performance multiple applications including non-linear ones, without the need of accurate models. Despite good results this technique, time delay can deteriorate ADRC, limiting application. Here, effect on stability a linear ADRC is analysed, using an alternative mathematical description, new ef...

To realize the stable tracking control of optoelectronic stabilized platform system under nonlinear friction and external disturbance, an active disturbance rejection controller (ADRC) with compensation is proposed to improve target ability anti-disturbance performance. First, a LuGre observer designed estimate behavior preliminarily suppress interference torque on system. Then, ADRC introduced...

Nonlinear characteristics are very common in marine steam turbine, such as control input constraints and external disturbances. Based on the active disturbance rejection control (ADRC), an anti-windup scheme is proposed to eliminate the undesired effects of nonlinear characteristics in the control system. In this scheme, firstly, a method of setting parameter is designed for nonlinear active di...

 The ADRC tuning is essentially a pole-placement technique and the desired performance is indirectly achieved through the location of the closed-loop poles. However, the final choice of these poles becomes a trial-and-error strategy. In contrast with pole-placement, in the LQR method, the desired performance objectives are directly and globally addressed by minimizing a quadratic function of ...

As an alternative to both classical PID-type and modern model-based approaches to solving control problems, active disturbance rejection control (ADRC) has gained significant traction in recent years. With its simple tuning method and robustness against process parameter variations, it puts itself forward as a valuable addition to the toolbox of control engineering practitioners. This article a...

A new digital control solution to motion control problems is proposed. It is based on a unique active disturbance rejection concept, where the disturbances are estimated using an extended state observer (ESO) and compensated in each sampling period. The dynamic compensation reduces the motion system to approximately a double integrator which can be easily controlled using a nonlinear proportion...

A suboptimal active disturbance rejection controller (S-ADRC) is proposed for second-order systems with unknown time-varying nonlinear dynamics. The output-feedback guarantees a global convergence to the vicinity of an optimal solution by means dynamic control gains, based on estimated main and extended state variables obtained through high-gain observer. Three numerical examples compare perfor...

The increasing demand for target tracking, environmental surveys, surveillance and mapping requires multi-axis gimbal systems with high tracking stabilization performance. In this study, a new torque estimation structure is proposed to compute the complex disturbances negatively affecting performance of system. Two different control strategies based on Active Disturbance Rejection Control (ADRC...

Obtaining the approximation of rotation rate form a Z-Axis MEMS gyroscope is a challenging problem. Currently, most commercially available MEMS gyroscopes are operating in an open-loop for purposes of simplicity and cost reduction. However, MEMS gyroscopes are still fairly expensive and are not robust during operation. The purpose of this research was to develop a high-performance and low-cost ...

Aiming at the problem of multi-machine power balance control long distance belt conveyor with double drum and three permanent magnet synchronous motor, method speed torque master slave motors driven by multiple is analyzed. According to properties coaxial rigid connection flexible drum, The strategy based on fuzzy Active Disturbance Rejection Controller (ADRC) proposed achieve purpose disturban...