### Abstract

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.

Original language | English |
---|---|

Pages (from-to) | 177-189 |

Number of pages | 13 |

Journal | Journal of Power Electronics |

Volume | 15 |

Issue number | 1 |

DOIs | |

Publication status | Published - 2015 |

### Fingerprint

### Keywords

- Anti-windup
- Integral state prediction
- PI plane
- Speed control
- Steady-state integral proportional integral control
- Tracking back calculation

### ASJC Scopus subject areas

- Electrical and Electronic Engineering
- Control and Systems Engineering

### Cite this

*Journal of Power Electronics*,

*15*(1), 177-189. https://doi.org/10.6113/JPE.2015.15.1.177

**Steady-state integral proportional integral controller for PI motor speed controllers.** / Hoo, Choon Lih; Mohamed Haris, Sallehuddin; Chung, Edwin Chin Yau; Mohamed, Nik Abdullah Nik.

Research output: Contribution to journal › Article

*Journal of Power Electronics*, vol. 15, no. 1, pp. 177-189. https://doi.org/10.6113/JPE.2015.15.1.177

}

TY - JOUR

T1 - Steady-state integral proportional integral controller for PI motor speed controllers

AU - Hoo, Choon Lih

AU - Mohamed Haris, Sallehuddin

AU - Chung, Edwin Chin Yau

AU - Mohamed, Nik Abdullah Nik

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

KW - Anti-windup

KW - Integral state prediction

KW - PI plane

KW - Speed control

KW - Steady-state integral proportional integral control

KW - Tracking back calculation

UR - http://www.scopus.com/inward/record.url?scp=84923822628&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84923822628&partnerID=8YFLogxK

U2 - 10.6113/JPE.2015.15.1.177

DO - 10.6113/JPE.2015.15.1.177

M3 - Article

AN - SCOPUS:84923822628

VL - 15

SP - 177

EP - 189

JO - Journal of Power Electronics

JF - Journal of Power Electronics

SN - 1598-2092

IS - 1

ER -