Non-homogeneous disturbance observer-based second order sliding mode control

Li, Peng; Wang, Peng; Ma, Jianjun; Peng, Xuefeng

doi:10.1109/chicc.2014.6896964

Cited by 1 publication

(2 citation statements)

References 17 publications

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“…Based on the non-homogeneous differentiator proposed by Levant in [38], this paper uses a NHDO to improve the steady-state accuracy [39]:…”

Section: B Design Of Non-homogeneous Disturbance Observermentioning

confidence: 99%

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Improved Deadbeat Predictive Current Control of Permanent Magnet Synchronous Motor Using a Novel Stator Current and Disturbance Observer

Gong¹,

Zhang

et al. 2021

IEEE Access

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Thanks to the merits of superior dynamic response capability and current tracking performance, the deadbeat predictive current control (DPCC) has become a research hotspot for the permanent magnet synchronous motor (PMSM) drive system. However, DPCC is a model parameter sensitive control method. If there is a motor parameter mismatch, the performance of the DPCC drive system in terms of expected voltage vector, current harmonics, and torque ripple would be influenced. In this paper, firstly, a novel power sliding mode reaching law is proposed, which shortens the convergence time of the system state no matter what the initial state is. Then, an improved non-homogeneous disturbance observer (NHDO) with the proposed power sliding mode reaching law is established, which guarantees d-q axis current errors converge to zero when the PMSM drive system suffers uncertain disturbances, such as motor parameter mismatch. Finally, an improved DPCC using the novel stator current and disturbance observer which includes the proposed power sliding mode reaching law and NHDO is established, hence the accuracy of the predicted current increases significantly and voltage vectors can be compensated immediately once disturbances occur. Both simulation and platform experiments verify that the improved DPCC can maintain the current tracking performance with lower current ripples compared with the traditional DPCC when the major motor parameters mismatch. The proposed novel stator current and disturbance observer may also be capable of enhancing the PMSM's drive performance under other control strategies.

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“…Based on the non-homogeneous differentiator proposed by Levant in [38], this paper uses a NHDO to improve the steady-state accuracy [39]:…”

Section: B Design Of Non-homogeneous Disturbance Observermentioning

confidence: 99%

“…The parameters of the SCDO are k1 = 4000, k2 = 2000, and γ = 0.5, which are optimally selected based on simulation and experimental results. λ0 = 1.1, λ1 = 1.5, λ2 = 2, μ0 = 3, μ1 = 6, and μ2 = 8 are parameters in the NHDO, they are fixed parameters and do not need to modify further[39].…”

mentioning

confidence: 99%

Improved Deadbeat Predictive Current Control of Permanent Magnet Synchronous Motor Using a Novel Stator Current and Disturbance Observer

Gong¹,

Zhang

et al. 2021

IEEE Access

View full text Add to dashboard Cite

show abstract

Non-homogeneous disturbance observer-based second order sliding mode control

Cited by 1 publication

References 17 publications

Improved Deadbeat Predictive Current Control of Permanent Magnet Synchronous Motor Using a Novel Stator Current and Disturbance Observer

Improved Deadbeat Predictive Current Control of Permanent Magnet Synchronous Motor Using a Novel Stator Current and Disturbance Observer

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