Comparison and Evaluation of Anti-Windup PI Controllers

Li, Xinlan; Park, Jonggyu; Shin, Hwi-Beom

doi:10.6113/jpe.2011.11.1.045

Cited by 55 publications

(40 citation statements)

References 8 publications

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“…[13] and Eq. (9)]: gains appear in the time constant for both terms that describe the system response in Eq.…”

Section: Pi Planementioning

confidence: 99%

“…[13], the amount of overshoot experienced by a system is predicted from the relative value of the integral component when it enters the linear region to its target steady state integral value. A large integral component relative to its steady state value at the time the system regains linearity is found.…”

Section: Pi Planementioning

confidence: 99%

“…The output of the PI controller, u, which comprises proportional gain, k p , integral gain, k i , input error, e, and integral state, q, parameters, is indicated in Eq. (13). The error of the closed-loop system for a variable-speed motor drive is obtained from the difference between the current speed of the motor and the set reference [Eq.…”

Section: Linear Range Of Pi Controlmentioning

confidence: 99%

“…The conditional integration, tracking back calculation, and integral state prediction schemes are the most preferred techniques among the various methods available [11]- [13]. These techniques switch back to the conventional PI control mechanism when the system operates under the linear state.…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, Ref. [13] proposed an integral state prediction (ISP) scheme (Fig. 3) based on an analysis using the PI plane.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Steady-State Integral Proportional Integral Controller for PI Motor Speed Controllers

Hoo

Haris²,

Chung³

et al. 2015

Journal of Power Electronics

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The output of the controller is said to exceed the input limits of the plant being controlled when a control system operates in a non-linear region. This process is called the windup phenomenon. The windup phenomenon is not preferable in the control system because it leads to performance degradation, such as overshoot and system instability. Many anti-windup strategies involve switching, where the integral component differently operates between the linear and the non-linear states. The range of state for the non-overshoot performance is better illustrated by the boundary integral error plane than the proportional-integral (PI) plane in windup inspection. This study proposes a PI controller with a separate closed-loop integral controller and reference value set with respect to the input command and external torque. The PI controller is compared with existing conventional proportional integral, conditional integration, tracking back calculation, and integral state prediction schemes by using ScicosLab simulations. The controller is also experimentally verified on a direct current motor under no-load and loading conditions. The proposed controller shows a promising potential with its ability to eliminate overshoot with short settling time using the decoupling mode in both conditions.

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“…[13] and Eq. (9)]: gains appear in the time constant for both terms that describe the system response in Eq.…”

Section: Pi Planementioning

confidence: 99%

Section: Pi Planementioning

confidence: 99%

Section: Linear Range Of Pi Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Accordingly, Ref. [13] proposed an integral state prediction (ISP) scheme (Fig. 3) based on an analysis using the PI plane.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Steady-State Integral Proportional Integral Controller for PI Motor Speed Controllers

Hoo

Haris²,

Chung³

et al. 2015

Journal of Power Electronics

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show abstract

Designing Power Electronic Control Systems

Simes¹,

Farret

2016

Modeling Power Electronics and Interfacing Energy Conversion Systems

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New Integral Antiwindup Scheme for PI Motor Speed Control

Hoo¹,

Haris²,

Chung³

et al. 2015

Asian Journal of Control

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Windup refers to the phenomenon where a control system operates in a nonlinear region when the controller's output exceeds the input limits of the plant being controlled. Windup can lead to performance degradation in terms of overshoot, settling time and even system stability. Many anti‐windup strategies involve switching and manipulating the integral control component in various ways when saturation occurs aiming to bring control back into the linear region. For better insight into windup, the proportional–integral (PI) plane is now used as a means to explain the phenomenon in terms of the controller's signals. A PI controller with a built‐in closed‐loop integral controller that has a reference set based on the input command and external torque is proposed. The performance for this proposed method is compared against existing conditional integration, tracking back calculation and integral state prediction schemes on second and third order systems using MATLAB/SIMULINK simulations of an induction motor and a DC motor respectively. The proposed controller showed promising potential with its ability to eliminate overshoot in both no load and full load conditions due to the decoupling of its parameters from its response and has the shortest settling time when compared against existing schemes, even in the presence of noise.

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Comparison and Evaluation of Anti-Windup PI Controllers

Cited by 55 publications

References 8 publications

Steady-State Integral Proportional Integral Controller for PI Motor Speed Controllers

Steady-State Integral Proportional Integral Controller for PI Motor Speed Controllers

Designing Power Electronic Control Systems

New Integral Antiwindup Scheme for PI Motor Speed Control

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