Frequency-Response of Non-Singular Terminal Sliding Mode Control with Actuators

Jyoti P. Mishra; Xinghuo Yu; Igor Boiko

doi:10.1109/TCSII.2021.3119899

Frequency-Response of Non-Singular Terminal Sliding Mode Control with Actuators

Jyoti P. Mishra, Xinghuo Yu, Igor Boiko

Electrical Engineering

RMIT University

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

2 Scopus citations

Abstract

Non-singular terminal sliding mode control (NTSMC) is widely popular due to its various industrial applications. In many practical circuit systems, the control input is actually given to an actuator rather than directly to the plant. Therefore, it is important to study the effect of actuators on NTSMC performance. In this brief, frequency-domain characteristics of NTSMC are analyzed using the describing function method. It is shown that in the presence of actuator dynamics, the system exhibits a self-sustained periodic oscillation known as chattering. The relationship between the fundamental frequency, the amplitude of this periodic motion and the NTSMC parameters is explored. The effectiveness of the theoretical analysis is verified via a practical example based on an industrial emulator system.

Original language	British English
Pages (from-to)	1392-1396
Number of pages	5
Journal	IEEE Transactions on Circuits and Systems II: Express Briefs
Volume	69
Issue number	3
DOIs	https://doi.org/10.1109/TCSII.2021.3119899
State	Published - 1 Mar 2022

Keywords

Chattering
Describing function
Frequency-domain
Sliding mode control

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10.1109/TCSII.2021.3119899

Cite this

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title = "Frequency-Response of Non-Singular Terminal Sliding Mode Control with Actuators",

abstract = "Non-singular terminal sliding mode control (NTSMC) is widely popular due to its various industrial applications. In many practical circuit systems, the control input is actually given to an actuator rather than directly to the plant. Therefore, it is important to study the effect of actuators on NTSMC performance. In this brief, frequency-domain characteristics of NTSMC are analyzed using the describing function method. It is shown that in the presence of actuator dynamics, the system exhibits a self-sustained periodic oscillation known as chattering. The relationship between the fundamental frequency, the amplitude of this periodic motion and the NTSMC parameters is explored. The effectiveness of the theoretical analysis is verified via a practical example based on an industrial emulator system.",

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AB - Non-singular terminal sliding mode control (NTSMC) is widely popular due to its various industrial applications. In many practical circuit systems, the control input is actually given to an actuator rather than directly to the plant. Therefore, it is important to study the effect of actuators on NTSMC performance. In this brief, frequency-domain characteristics of NTSMC are analyzed using the describing function method. It is shown that in the presence of actuator dynamics, the system exhibits a self-sustained periodic oscillation known as chattering. The relationship between the fundamental frequency, the amplitude of this periodic motion and the NTSMC parameters is explored. The effectiveness of the theoretical analysis is verified via a practical example based on an industrial emulator system.

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Frequency-Response of Non-Singular Terminal Sliding Mode Control with Actuators

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Keywords

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