The traditional fault-tolerant procedure usually comprises fault detection and tolerance. Fault is adopted to locate the specific fault, which increases complexity misdiagnosis risk of systems. This article introduced an adaptive control for open-phase faults open-switch in dual three-phase permanent magnetic synchronous machine (PMSM) drives. proposed scheme fulfilled by going through three operation states: healthy operation, transient <italic xmlns:mml="http://www.w3.org/1998/Math/MathML"...

This article presents a hybrid nonsingleton fuzzy strong tracking Kalman filter (H-NFSTKF) for the high-precision photoelectric system (PTS) to improve state estimation performance in complex case of measurement noise change and velocity mutation. The proposed H-NFSTKF is composed three parts: A (STKF) two logic systems (FLSs) including singleton FLS (SFLS) (NFLS). To compare different firing strength approaches, standard method (Sta-NS), centroid-based (Cen-NS), similarity-based (Sim-NS),...

In this article, a novel optimization-based maximum-torque fault-tolerant control scheme is proposed for the open-phase fault of dual three-phase permanent-magnet synchronous motor drive. First, relationship between torque output capability and single-phase copper losses under derived with consideration overheating problems. Since expression has multiple optimization goals, new objective function designed to simplify current optimization. Second, particle swarm (PSO) utilized obtain...

A novel two-mode inverter-based open-winding permanent magnet synchronous motor drive is proposed in this article. The operates hybrid-inverter mode at low and medium speed to achieve high power quality. common dc-bus adopted fulfill a wider range than mode. Based on the drive, modulation strategy for any voltage ratio proposed, which integrates instantaneous floating capacitor (FC) into synthesize reference vector. can not only guarantee FC regulation but also start when zero switch of...

To fulfill accurate online temperature estimation of permanent-magnet synchronous motor (PMSM), an integrated model-based and data-driven method is proposed in this paper. First, a simplified lumped parameter thermal network (LPTN) model developed to learn the tendency variations. Meanwhile, small-scale artificial neural (ANN) specifically designed compensate unmodeled characteristics. The parameters LPTN identified purely from common variables no material information required. With...

Type-1 fuzzy PID controllers are widely used in industrial control systems due to their well-established theoretical foundation, simplicity of structure, and ease operation. However, as become increasingly complex demands for higher performance intensify, the limitations more apparent. Additionally, difficulty tuning parameters inability adjust these online controlled system changes further constrain effectiveness traditional controllers. To address challenges, this paper introduces a...

To make full use of the advantages dual three-phase permanent magnet synchronous motor (DTP-PMSM) and open-winding (OW-PMSM), this article proposed a novel typology drive which can switch between (DTP) structure (OW) online. On basis, basic control fault-tolerant are studied to explore superiority typology. Under healthy conditions, no adjustment is required for modulation method scheme when switching DTP OW mode. By using two bidirectional thyristors, smooth modes be guaranteed. Besides,...

In high-speed free-space optical communication systems, the received laser beam must be coupled into a single-mode fiber at input of receiver module. However, propagation through atmospheric turbulence degrades spatial coherence and poses challenges for coupling. this paper, we propose novel method, called as adaptive stochastic parallel gradient descent (ASPGD), to achieve efficient To specific, formulate coupling problem model-free optimization solve it using ASPGD in parallel. avoid...

Open-phase fault (OPF) and open-switch (OSF) are two common electrical faults in the permanent magnet synchronous machine (PMSM) drives. To locate rapidly relieve damage, a current prediction-based diagnosis scheme is proposed for OPF OSF three-phase PMSM The consists of three steps, namely, determining occurrence, locating faulty phase, identifying specific fault. general deviations between dq-axis predicted currents from normal model feedback used to determine occurrence. different models...

In this article, a maximum-torque optimization control scheme is proposed for dual three-phase permanent-magnet synchronous motor (DTP-PMSM) drives in low-frequency and static operations. Both the winding configurations of isolated neutral points open are studied article. conventional vector scheme, constraints sinusoidal phase current may cause local overheating problems By comparison, takes into account high instantaneous single-phase copper loss to avoid improve torque output capability....

In practical applications, it is time-consuming and laborious to collect sufficient labeled samples for the data-driven fault diagnosis of motor drives. To solve this issue, article proposes an online semisupervised method electrical faults dual three-phase permanent-magnet synchronous drive on condition limited samples. proposed method, combination currents harmonic space rotor position are extracted as input features which have lower dimensions computational complexity. Then, optimal key...

Abstract Model predictive current control (MPCC) has been widely recognized as a high‐performance scheme for permanent magnet synchronous motor drives because of its simple structure. This article proposes novel multivector MPCC (MMPCC) method based on hybrid set, which includes both original basic voltage vectors (VVs) and synthesized VVs. The two active VVs one null VV are considered an initial the exact combination them depends their corresponding durations, calculated by stator slopes in...

The dynamic Moore-Penrose inverse solution has attracted increasing attention because of its wide range applications. use zeroing neural networks to solve the problem matrices become a popular topic in recent years. However, existing studies have established ZNN models for left and right based on different dimensions matrix, respectively. There is an urgent need new framework that can handle both simultaneously. In addition, convergence performance critical metric when using problems,...

In this paper, an approach to improve the disturbance suppression performance of a fast steering mirror (FSM) tracking control system based on charge-coupled device (CCD) and micro-electro-mechanical (MEMS) inertial sensors is proposed. The observation compensation (DOC) method recommended enhance classical multi-loop feedback (MFC) for line-of-sight (LOS) stabilization in FSM system. MEMS accelerometers gyroscopes have been used tentatively implement MFC instead fiber-optic (FOG) because...

The electro-optical tracking system with speedability and maneuverability based on stationary platform is confronted some problems such as external physical disturbance detector delay. To obtain better stability, which the key to achieving high precision, a modified Smith predictor method for inertia stabilization loop control introduced. This proposes scheme compensate delay time caused by signal filtering of fiber gyroscope sensor in velocity feedback control, it utilizes feedforward...

To address the problems of a low tracking accuracy and slow error convergence in high-order single-input, single-output electro-optical systems, backstepping control method based on Softsign linear–nonlinear differentiator is proposed. First, designed conjunction with excitation function, using its output as an approximate replacement for conventional differentiation process. Then, this combined to eliminate “explosion complexity” problem procedures due repeated derivation virtual...

To improve the dynamic property and disturbance suppression ability of an electro-optical tracking system, this paper presents a disturbance-observer-based LQR control method. The robust controller is composed three parts: one controller, reference model other compensatory designed with output observer. uncertainty disturbances are considered in design. By Lyapunov stability theory linear matrix inequality (LMI) technique, sufficient conditions for observer gain system given. Simulation...

This study concerns the problem of integrated optimization structure and control based on a fast steering mirror, aiming to achieve simultaneous mechanical system. The traditional research development path mirror involves lengthy process from initial design final physical manufacture. In prior process, it was necessary produce prototypes for repeated debugging iterative requirements, but this approach consumes significant amount time cost. To expedite reduce unnecessary experimental costs,...