Based on the feature of model disturbances and uncertainty being compensated dynamically in auto – disturbances-rejection-controller (ADRC), a new method using ADRC is proposed for the decoupling control of dispenser longitudinal movement in big flight envelope. Developed from nonlinear model directly, ADRC is especially suitable for dynamic model that has big disturbances. Furthermore, without...

As the higher order or generalized extended state observer (ESO), proportional-integral (GPI) (GPIO) haves been proposed to enhance active disturbance rejection (ADR) control (ADRC) system's ability. However, different ADR controllers can be deduced based on same GPIO, resulting in dynamic performances. In this article, ten fourth GPIO are present. reveal relationship between these and conventi...

Abstract Linear extended state observer (linear observer, LESO) is the core component of linear active disturbance rejection control control, LADRC), and its performance critical to effect. The ADRC applied speed loop permanent magnet synchronous motor system with a double closed-loop strategy. By adding scale factor utilization efficiency observed signal observation improved. On this basis, hy...

The piezoelectric smart structures, which can be labeled as the cream of crop structures without overstatement, are strongly impacted by a large number uncertainties and disturbances during operation. present paper reviews active disturbance rejection control (ADRC) technologies developed for application in focusing on measurement, analysis, estimation, attenuation uncertainties/disturbances sy...

In this paper, a problem of influence an input-gain uncertainty on the tracking performance control structure designed according to Active Disturbance Rejection Control (ADRC) paradigm is investigated. This exemplified using second-order plant. It presented that conscious choice parameter different real plant may lead significant improvement precision if controller in error domain. Obtained res...

Sufficient and stable positioning torque is necessary for the parking of an electric vehicle driven by switched reluctance motor (SRM). Considering highly nonlinear characteristic SRM, control with high stability power consumption economy important issue. This paper presents optimized method SRM to achieve optimal simultaneously. The static torque-angle curve a four-phase 16/12 analyzed, based ...

This paper develops a nonsingular terminal sliding mode controller (NTSMC) based on extended state observer (ESO) for buck converter subject to load disturbances and input voltage variations. First, novel modeling method is developed transform the matched mismatched caused by resistance variations into uniform total disturbance. Second, an ESO established estimate differential of output Third, ...

In this paper, we are interested to stabilize an axially moving string subject external disturbances. We assume that the disturbance may increases exponentially. employ active rejection control (ADRC) approach estimate disturbance. design a observer has time-varying gain so can be estimated with exponential way. order closed loop system, use constructed through high-gain adaptive velocity feedb...

A compound scheme, based on an improved active disturbance rejection controller (ADRC) and nonlinear compensation, is developed for the electromechanical actuator (EMA) system in this paper. First, considering influences of backlash, friction EMA system, a model presented. The LuGre Hysteresis inverse are used to compensate backlash phenomenon. Then, method ADRC, Fal function filter Linear exte...

As a kind of intelligent marine equipment, its successful recovery is the basis Unmanned Underwater Vehicle (UUV)’s normal working and completing mission successfully. However, mathematical model UUV severely coupled highly nonlinear, may be subject to complex interference in process. Besides, could not determined completely. Active disturbance rejection control (ADRC) method does need beforeha...