Wind power generation has increased rapidly in China over the last decade. In this paper the authors present an extensive survey on the status and development of wind power generation in China. The wind resource distributions in China are presented and assessed, and the 10 GW-scale wind power generation bases are introduced in details. The domestic research status of main components of WP system is then elaborated, followed by an evaluation of the wind power equipment manufacturers. Finally, the outlook for the development of the wind power utilization in China is presented.

Overview of wind power generation in China: Status and development

Introduces the auto disturbance rejection controller and its application on a Fast Following Synchronizer of Generator The numerical simulation shows that the controller ensures very good robustness under modeling uncertainty,and it is concluded that the proposed controller produces better dynamic performance such as small overshoot than the classic PID controller

Auto-disturbances-rejection Controller and it′s Application in Fast Following Synchronizer of Generators

Permanent magnet synchronous motor (PMSM) is extensively used in industries. Recently, active disturbance rejection controller (ADRC) based control designs stand out due to advantages for a complex uncertain PMSM servo system. A general design procedure for the ADRC based PMSM control is discussed at the beginning. Then, the ADRC based control designs applied to PMSM servo systems are fully reviewed, in which several aspects are involved: position control, speed control, current control, cascaded ADRC control, and position identification. Moreover, to verify the effectiveness of the ADRC based control, simulations for the PMSM speed control are conducted in the Matlab/Simulink. Conclusions and the future research directions are indicated in the end.

A review on ADRC based PMSM control designs

In this paper a second-order data-driven Active Disturbance Rejection Control (ADRC) is merged with a proportional-derivative Takagi-Sugeno Fuzzy (PDTSF) logic controller, resulting in two new control structures referred to as second-order data-driven Active Disturbance Rejection Control combined with Proportional-Derivative Takagi-Sugeno Fuzzy Control (ADRC–PDTSFC). The data-driven ADRC–PDTSFC structure was compared with a data-driven ADRC structure and the control system structures were validated by real-time experiments on a nonlinear Multi Input-Multi Output tower crane system (TCS) laboratory equipment, where the cart position and the arm angular position of TCS were controlled using two Single Input-Single Output control system structures running in parallel. The parameters of the data-driven algorithms were tuned in a model-based way using a metaheuristic algorithm in order to improve the efficiency of energy consumption.

https://www.mdpi.com/1996-1073/12/8/1548/pdf

Combination of Data-Driven Active Disturbance Rejection and Takagi-Sugeno Fuzzy Control with Experimental Validation on Tower Crane Systems

Soft robot arms possess such characteristics as light weight, simple structure and good adaptability to the
environment, among others. On the other hand, robust control of soft robot arms presents many difficulties. Based
on these reasons, this paper presents a novel design and modelling of a fuzzy active disturbance rejection control
(FADRC) controller for a soft PAM arm. The soft arm comprises three contractile and one extensor PAMs, which
can vary its stiffness independently of its position in space. Force analysis for the soft arm is conducted, and stiffness
model of the arm is established based on the relational model of contractile and extensor PAM. The accuracy of
stiffness model for the soft arm was verified through experiments. Associated to this, a controller based on the fuzzy
adaptive theory and ADRC, FADRC, has been designed to control the arm. The fuzzy adaptive theory is used to
adjust the parameters of the ADRC, the control algorithm has the ability to control stiffness and position of the soft
arm. In this paper, FADRC was further verified through comparative experiments on the soft arm. This paper
reinforces the hypothesis that FADRC control, as an algorithm, indeed possesses good robustness and adaptive
abilities. Key words: soft robot, variable stiffness, PAM, stiffness modelling, FADRC

/pdf/design-and-control-of-a-novel-variable-stiffness-soft-arm-3iyu13glm0.pdf

Design and control of a novel variable stiffness soft arm

The invention relates to a PMSM servo system control method based on fuzzy and active disturbance rejection control. A position signal is given by a differential tracker to arrange a transition process so that the contradiction between rapidness and overshoot of a system is solved, and uncertainty, friction torques and external disturbance due to modeling errors of the system are observed via an expansion state observer; according to the error between the differentials generated by the differential tracker and state variation generated by the expansion state observer, a fuzzy inference rule is obtained with application of experimental experience of technical staff, so that a fuzzy rule control table of an error proportion coefficient, a differential coefficient and an integration coefficient is established; accurate control amount is obtained after de-fuzzification, so that parameter self-adaptive adjustment of a nonlinear error feedback control law is realized; and compensation amounts of the nonlinear error feedback control law and the expansion state observer to the total disturbance forms the control amount, thereby realizing optimal control for an controlled object. The method of the invention improves both tracking precision and disturbance rejection capability of the system.

Permanent magnet synchronous motor (PMSM) servo system control method based on fuzzy and active disturbance rejection control

A new fuzzy active-disturbance rejection position controller of permanent magnet synchronous motor (PMSM) servo system is presented in this paper. The improved position and speed loop controller not only maintains the original features of controller, but also reduces the adjustable parameters, which makes control performance better. Through the analysis of cross-axis output equation, a new position fuzzy active-disturbance rejection controller (Fuzzy-ADRC) scheme is proposed, ensuring the system dynamic performance, meanwhile improving the ability of the anti-load disturbance. Simulation and experimental results show that compared with classic PID control system the improved Fuzzy-ADRC system has characteristics of fast response, no overshoot and high control accuracy, and the system also has strong robustness to load and parameter changes. Besides, Fuzzy-ADRC runs steadily under high or low speed condition, which realizes higher control accuracy and stronger anti-interference of servo position control system, and makes control effect better.

A new fuzzy active-disturbance rejection controller applied in PMSM position servo system

In the interior permanent magnet synchronous motor (IPMSM) sensorless control system for electric vehicle (EV), in order to improve system robustness and adaptive ability, a novel active-disturbance rejection controller (ADRC) is presented in this paper. In practice, the ADRC parameters are difficult to operate and adjust, so we introduce the fuzzy control, combined with their own characteristics, a self-adapted active disturbance rejection controller with fuzzy control theory is designed. Considering the inner and outer disturbance of the system as the unknown disturbance, and the sensorless control of IPMSM is got by means of the novel ADRC. Simulation results show that the system has strong adaptive ability of disturbance and robust in different speed range, and it has high accurate speed estimation. Feasibility and advantages of the control strategy has been validated in the field of electric vehicle control.

IPMSM sensorless control based on fuzzy active-disturbance rejection controller for electric vehicle

In order to suppress the harmonic power and load disturbance effect to the DC bus voltage under the PWM asymmetrical grid voltage condition, a new voltage control method is proposed based on sliding mode active disturbance rejection theory. Sliding mode active disturbance rejection controller (ADRC) can control positive /negative-sequence current and exactly estimate coupling disturbance in PWM rectifier, then compensate for it, so that system external disturbance can be reduced. Simulation and experimental results show that this method can fast and not overshoot control to the output voltage, and suppress harmonics in power transmission and load changes to system effectively, keep the DC voltage steady and PWM rectifier working without interruption under unbalanced input voltages.

http://ieeexplore.ieee.org/iel7/6704982/6713106/06713331.pdf

Sliding mode based on active-disturbance rejection controller for pulse width modulation rectifier under asymmetrical input voltages

A novel variable structure active-disturbance rejection position controller of permanent magnet synchronous motor (PMSM) servo system is presented in this paper. Not only maintaining the original features of controller, but also reducing the adjustable parameters, based on the variable structure designing. Through the analysis of cross-axis output equation, proposing a new position variable structure active-disturbance rejection controller (VS-ADRC) scheme, ensuring the system dynamic performance, while improving the ability of the anti-load disturbance. Simulation results show that the improved system with strong robustness to load and parameter changes within the system has fast response, no overshoot and the high control accuracy characteristics.

Qing Huang

Papers

Permanent magnet synchronous motor (PMSM) servo system control method based on fuzzy and active disturbance rejection control

A new fuzzy active-disturbance rejection controller applied in PMSM position servo system

IPMSM sensorless control based on fuzzy active-disturbance rejection controller for electric vehicle

Sliding mode based on active-disturbance rejection controller for pulse width modulation rectifier under asymmetrical input voltages

A novel position controller for PMSM servo system based on variable structure active disturbance rejection controller