SDRE-based near optimal control system design for PM synchronous motor

Ton Duc Do; Han Ho Choi; Jin Woo Jung

doi:10.1109/TIE.2011.2174540

SDRE-based near optimal control system design for PM synchronous motor

Ton Duc Do, Han Ho Choi, Jin Woo Jung

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

This paper presents a nonlinear optimal speed controller based on a state-dependent Riccati equation (SDRE) for permanent magnet synchronous motor (PMSM). An SDRE-based near optimal load torque observer is also proposed to provide the load torque information for the controller. In both designs, the stability is analytically proven, and the Taylor series method is used to find an approximate solution because the SDRE cannot be directly solved. The SDRE-based optimal controller and the observer can ensure better control performance such as no overshoot and fast transient response in speed tracking than the linear conventional controllers such as linear quadratic regulator and proportional-integral controller even under the variations of the model parameters and load torque. The proposed SDRE-based control strategy is implemented on a PMSM testbed using TMS320F28335 DSP. The simulation and experimental results are given to prove the feasibility of the proposed control scheme.

Original language	English
Article number	6068246
Pages (from-to)	4063-4074
Number of pages	12
Journal	IEEE Transactions on Industrial Electronics
Volume	59
Issue number	11
DOIs	https://doi.org/10.1109/TIE.2011.2174540
Publication status	Published - Nov 2012
Externally published	Yes

Keywords

Nonlinear control
Taylor series method
observer
optimal control
permanent magnet synchronous motor (PMSM)
speed control
state-dependent Riccati equation (SDRE)

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering

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title = "SDRE-based near optimal control system design for PM synchronous motor",

abstract = "This paper presents a nonlinear optimal speed controller based on a state-dependent Riccati equation (SDRE) for permanent magnet synchronous motor (PMSM). An SDRE-based near optimal load torque observer is also proposed to provide the load torque information for the controller. In both designs, the stability is analytically proven, and the Taylor series method is used to find an approximate solution because the SDRE cannot be directly solved. The SDRE-based optimal controller and the observer can ensure better control performance such as no overshoot and fast transient response in speed tracking than the linear conventional controllers such as linear quadratic regulator and proportional-integral controller even under the variations of the model parameters and load torque. The proposed SDRE-based control strategy is implemented on a PMSM testbed using TMS320F28335 DSP. The simulation and experimental results are given to prove the feasibility of the proposed control scheme.",

keywords = "Nonlinear control, Taylor series method, observer, optimal control, permanent magnet synchronous motor (PMSM), speed control, state-dependent Riccati equation (SDRE)",

author = "Do, {Ton Duc} and Choi, {Han Ho} and Jung, {Jin Woo}",

note = "Funding Information: Manuscript received May 13, 2011; revised July 4, 2011 and August 25, 2011; accepted September 22, 2011. Date of publication November 2, 2011; date of current version June 19, 2012. This work was supported by the Energy Efficiency and Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) under Grant (No. 2010T100200468) funded by the Ministry of Knowledge Economy, Republic of Korea.",

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N2 - This paper presents a nonlinear optimal speed controller based on a state-dependent Riccati equation (SDRE) for permanent magnet synchronous motor (PMSM). An SDRE-based near optimal load torque observer is also proposed to provide the load torque information for the controller. In both designs, the stability is analytically proven, and the Taylor series method is used to find an approximate solution because the SDRE cannot be directly solved. The SDRE-based optimal controller and the observer can ensure better control performance such as no overshoot and fast transient response in speed tracking than the linear conventional controllers such as linear quadratic regulator and proportional-integral controller even under the variations of the model parameters and load torque. The proposed SDRE-based control strategy is implemented on a PMSM testbed using TMS320F28335 DSP. The simulation and experimental results are given to prove the feasibility of the proposed control scheme.

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