Sliding Mode Speed Control in Synchronous Motors for Agriculture Machinery: A Chattering Suppression Approach

David Marcos-Andrade, Francisco Beltran-Carbajal (), Ivan Rivas-Cambero, Hugo Yañez-Badillo, Antonio Favela-Contreras and Julio C. Rosas-Caro
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David Marcos-Andrade: Departamento de Posgrado, Universidad Politécnica de Tulancingo, Tulancingo 43629, Mexico
Francisco Beltran-Carbajal: Departamento de Energía, Unidad Azcapotzalco, Universidad Autónoma Metropolitana, Azcapotzalco, Mexico City 02200, Mexico
Ivan Rivas-Cambero: Departamento de Posgrado, Universidad Politécnica de Tulancingo, Tulancingo 43629, Mexico
Hugo Yañez-Badillo: Departamento de Investigación, TecNM: Tecnologico de Estudios Superiores de Tianguistenco, Tianguistenco 52650, Mexico
Antonio Favela-Contreras: Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
Julio C. Rosas-Caro: Facultad de Ingeniería, Universidad Panamericana, Álvaro del Portillo 49, Zapopan 45010, Mexico

Agriculture, 2024, vol. 14, issue 5, 1-25

Abstract: Synchronous motors have extended their presence in different applications, specifically in high-demand environments such as agronomy. These uses need advanced and better control strategies to improve energy efficiency. Within this context, sliding mode control has demonstrated effectiveness in electric machine control due to its advantages in robustness and quick adaptation to uncertain dynamic system disturbances. Nevertheless, this control technique presents the undesirable chattering phenomenon due to the discontinuous control action. This paper introduces a novel speed integral control scheme based on sliding modes for synchronous motors. This approach is designed to track smooth speed profiles and is evaluated through several numeric simulations to verify its robustness against variable torque loads. This approach addresses using electric motors for different applications such as irrigation systems, greenhouses, pumps, and others. Moreover, to address the chattering problem, different sign function approximations are evaluated in the control scheme. Then, the most effective functions for suppressing the chattering phenomenon through extensive comparative analysis are identified. Integral compensation in this technique demonstrates improvement in motor performance, while sign function approximations show a chattering reduction. Different study cases prove the robustness of this control scheme for large-scale synchronous motors. The simulation results validate the proposed control scheme based on sliding modes with integral compensation, by achieving chattering reduction and obtaining an efficient control scheme against uncertain disturbances in synchronous motors for agronomy applications.

Keywords: automation; agricultural machinery; synchronous motor control; sliding mode control; chattering suppression; sign function (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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