Active Disturbance Rejection-Based High-Precision Temperature Control of a Semibatch Emulsion Polymerization Reactor

Li, Dazi; Li, Zheng; Gao, Zhiqiang; Jin, Qibing

doi:10.1021/ie402544n

Cited by 20 publications

(11 citation statements)

References 21 publications

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“…Yang et al [15] constructed an adaptive PID controller model by least squares method. Li et al [16] optimized PID control parameters for a polymer reactor, using the genetic algorithm. Yu et al [17] proposed a two-level supervisory control strategy to revise the parameters of the PID controller.…”

Section: Figure 5 the Pid Control Diagrammentioning

confidence: 99%

Design and Implementation of Walking Beam Manipulator in Automatic Production Line Based on PLC

Zhang¹

2019

JESA

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This paper analyzes the kinematic features of the walking beam manipulator in the semiautomatic production line of cracked connecting rods, examines the positioning accuracy between the manipulator and each workstation, and explores the dynamic response of the position servo controller. Next, the author designed a position control system for the production line based on the electric drive mode, and detailed the hardware scheme of the system. The position control system integrates a specially-designed algorithm, which combines feedforward control and trigonometric function. Finally, the proposed system was proved to achieve accurate control of sequential motion and position between the walking beam manipulator and each workstation, especially in high-speed operation.

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Section: Figure 5 the Pid Control Diagrammentioning

confidence: 99%

Design and Implementation of Walking Beam Manipulator in Automatic Production Line Based on PLC

Zhang¹

2019

JESA

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“…), is the velocity factor, and ℎ is the sampling step. According to [18,21,26], fhan( 1 , 2 , , ℎ) is a nonlinear function that guarantees the fastest convergence from V 1 to ( +1) without any overshoot and is defined as follows:…”

Section: Design Feedforward Controller As Shown Inmentioning

confidence: 99%

A Decoupling Control Strategy for Multilayer Register System in Printed Electronic Equipment

Liu

Yin

et al. 2016

Mathematical Problems in Engineering

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Register accuracy is an important index to evaluate the quality of electronic products printed by gravure printed electronic equipment. However, the complex relationships of multilayer register system make the problem of decoupling control difficult to be solved, which has limited the improvement of register accuracy for the gravure printed electronic equipment. Therefore, this paper presents an integrated decoupling control strategy based on feedforward control and active disturbance rejection control (ADRC) to solve the strong coupling, strong interference, and time-delay problems of multilayer register system. First of all, a coupling and nonlinear model is established according to the multilayer register working principle in gravure printing, and then a linear model of the register system is derived based on the perturbation method. Secondly, according to the linear model, a decoupling control strategy is designed based on feedforward control and ADRC for the multilayer register system. Finally, the results of computer simulation show that the proposed control methodology can realize a decoupling control and has good control performance for multilayer register system.

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“…Furthermore, these studies provided valuable experience in the application process, and increased the convenience in the application of ADRC. ADRC technology has been used in motors, reactors, heaters and other industrial plants [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

On Parameter Stability Region of LADRC for Time-Delay Analysis with a Coupled Tank Application

Chen

Jianqing

et al. 2020

Processes

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The control of time-delay systems is a hot research topic. Ever since the theory of linear active disturbance rejection control (LADRC) was put forward, considerable progress has been made. LADRC shows a good control effect on the control of time-delay systems. The problem about the parameter stability region of LADRC controllers has been seldom discussed, which is very important for practical application. In this study, the dual-locus diagram method, which is used to solve the upper limit of the LADRC controller bandwidth, is studied for both first-order time-delay systems and second-order time-delay systems. The characteristic equation roots distribution is firstly transformed into the problem of finding the frequency of the dual-locus diagram intersection point. To solve the problem for second-order time-delay system LADRC controllers, which is a dual 10-order nonlinear equation, a transformation has been made through Euler’s formula and genetic algorithm (GA) has been adopted to search for the optimal parameters. Simulation results and experimental results on coupled tanks show the effectivity of the proposed method.

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Active Disturbance Rejection-Based High-Precision Temperature Control of a Semibatch Emulsion Polymerization Reactor

Cited by 20 publications

References 21 publications

Design and Implementation of Walking Beam Manipulator in Automatic Production Line Based on PLC

Design and Implementation of Walking Beam Manipulator in Automatic Production Line Based on PLC

A Decoupling Control Strategy for Multilayer Register System in Printed Electronic Equipment

On Parameter Stability Region of LADRC for Time-Delay Analysis with a Coupled Tank Application

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