Disturbance Attenuation for Surface-Mounted PMSM Drives Using Nonlinear Disturbance Observer-Based Sliding Mode Control

Abstract

This paper proposes a nonlinear disturbance observer (NDO)-based sliding mode speed controller (SMSC) to guarantee the superior control performance in terms of robustness, fast transient response, and small steady-state error for a surface-mounted permanent magnet synchronous motor (SPMSM) drive. Generally, the control performance of the SPMSM drives can be degraded by disturbances, so an NDO with a proper disturbance rejection capability is proposed to appropriately improve the tracking performance of the SMSC designed for the SPMSM drives. Unlike the linear disturbance observers (LDOs), the proposed NDO can efficiently estimate the lumped disturbance such as uncertainties parameters and unmodeled dynamics by using the nonlinear design function. The proposed NDO rejects the complex disturbances as well as self-regulates the observer gains to increase the convergence rate. The feasibility of the proposed NDO-based SMSC is verified by using a MATLAB/Simulink software program and a prototype SPMSM drive system with a TI TMS320F28335 digital signal processor (DSP). The comparative results with a conventional LDO-based SMSC are analyzed under load torque disturbances and model uncertainties to prove the excellent performance of the proposed NDO-based SMSC.INDEX TERMS Nonlinear disturbance observer (NDO), sliding mode speed controller (SMSC), surface-mounted permanent magnet synchronous motor (SPMSM).

Synthetic Adaptive Fuzzy Disturbance Observer and Sliding-Mode Control for Chaos-Based Secure Communication Systems

“…However, the assumption that the derivative of the disturbance is located within a constant range is still helpful. Some applications of the basic nonlinear disturbance observer require the assumption that the first derivative of the disturbance is equal to zero [42][43][44]. To obtain the estimation of disturbance information, the ASMC could be introduced for synchronization control of master and slave Lorenz systems.…”

Event-Triggered Integral Sliding Mode Anti-Disturbance Control for Nonlinear Systems Via T-S Disturbance Modeling

“…The following theorem discusses the dynamical performance of the disturbance observation error system (14). Theorem 1: If there exist matrices P 1 > 0 and R 1 satisfying…”

“…The basic idea of this method is to design a Disturbance Observer (DO) to estimate exogenous disturbances and further rejects the disturbances by combining the feed-forward compensator with the output information of DO (see [10]- [13]). It is noted that DOBC methods have been successfully applied into many practical systems, for example PMSM system [14], robot system [15], gimbal system [16] and spacecraft system [17]. However, when suffering with some nonlinear irregular disturbances, those existing active anti-disturbance results are usually difficult to deal with them.…”

Robust Observer Based on Fixed-Time Sliding Mode Control of Position/Velocity for a T-S Fuzzy MEMS Gyroscope

“…The application of a basic disturbance observer was found to achieve synchronization and secure communication in [20] and [22]. The application of NDOB for motor control was described in [38]. The development of NDOB on pendulum system can be found in [39].…”