Xiaoyong Zhu
YOU?
Author Swipe
View article: MSR-Align: Policy-Grounded Multimodal Alignment for Safety-Aware Reasoning in Vision-Language Models
MSR-Align: Policy-Grounded Multimodal Alignment for Safety-Aware Reasoning in Vision-Language Models Open
Vision-Language Models (VLMs) have achieved remarkable progress in multimodal reasoning tasks through enhanced chain-of-thought capabilities. However, this advancement also introduces novel safety risks, as these models become increasingly…
View article: Multi-Objective Optimization of Blockage Design Parameters Affecting the Performance of PEMFC by OEM-AHP-EWM Analysis
Multi-Objective Optimization of Blockage Design Parameters Affecting the Performance of PEMFC by OEM-AHP-EWM Analysis Open
Adding blockages to the gas flow channels in the bipolar plates has a significant effect on the performance of the proton exchange membrane fuel cell (PEMFC). The design parameters of the gas flow channels with blockages mainly include the…
View article: HiddenDetect: Detecting Jailbreak Attacks against Large Vision-Language Models via Monitoring Hidden States
HiddenDetect: Detecting Jailbreak Attacks against Large Vision-Language Models via Monitoring Hidden States Open
The integration of additional modalities increases the susceptibility of large vision-language models (LVLMs) to safety risks, such as jailbreak attacks, compared to their language-only counterparts. While existing research primarily focus…
View article: Equilibrate RLHF: Towards Balancing Helpfulness-Safety Trade-off in Large Language Models
Equilibrate RLHF: Towards Balancing Helpfulness-Safety Trade-off in Large Language Models Open
Fine-tuning large language models (LLMs) based on human preferences, commonly achieved through reinforcement learning from human feedback (RLHF), has been effective in improving their performance. However, maintaining LLM safety throughout…
View article: Isothermal Oxidation Behaviors of NiCrAlY Coatings at 1100 ℃
Isothermal Oxidation Behaviors of NiCrAlY Coatings at 1100 ℃ Open
View article: Torque improvement investigation of a double rotor permanent magnet motor based on effective utilization of magnetic field coupling
Torque improvement investigation of a double rotor permanent magnet motor based on effective utilization of magnetic field coupling Open
In this paper, a torque improvement method is presented for a double rotor (DR) permanent magnet motor, where the key is to conduct the study based on effective utilization of magnetic field coupling. To facilitate systematic analysis, the…
View article: Investigation and Regulation of High-Efficiency Region Boundary of Variable Magnetic Flux Permanent Magnet Motor
Investigation and Regulation of High-Efficiency Region Boundary of Variable Magnetic Flux Permanent Magnet Motor Open
View article: The positive association between hyperuricemia and polycystic ovary syndrome and analysis of related factors
The positive association between hyperuricemia and polycystic ovary syndrome and analysis of related factors Open
Purpose To examine the potential association between polycystic ovary syndrome (PCOS) and hyperuricemia and to elucidate the underlying contributory factors. Methods Retrospective study on 603 women with PCOS and 604 women without PCOS. An…
View article: Airgap-Harmonic-Oriented Partitioned Design Method of PMV Motor with Improved Torque Performances
Airgap-Harmonic-Oriented Partitioned Design Method of PMV Motor with Improved Torque Performances Open
Here, we introduce a partitioned design method that is oriented toward airgap harmonic for permanent magnet vernier (PMV) motors. The method proposes the utilization of airgap flux harmonics as an effective bridge between the torque design…
View article: Winding-MMF-based design and investigation of dual-winding hybrid-tooth vernier permanent magnet motor with reduced torque ripple and improved power factor
Winding-MMF-based design and investigation of dual-winding hybrid-tooth vernier permanent magnet motor with reduced torque ripple and improved power factor Open
In this paper, in order to further reduce torque ripple and improve power factor, a new vernier permanent magnet motor is proposed, in which the design concept of dual-winding hybrid-tooth configuration is incorporated. In order to clarify…
View article: A pole-changing flux reversal permanent magnet motor
A pole-changing flux reversal permanent magnet motor Open
In this paper, a pole-changing (PC) flux reversal permanent magnet (FRPM) motor is proposed for obtaining a wide speed range. According to the general air-gap field modulation theory, the permanent magnet (PM) magnetic field is modulated i…
View article: Design and analysis of a hybrid permanent magnet variable leakage flux motor for low core loss and wide speed range
Design and analysis of a hybrid permanent magnet variable leakage flux motor for low core loss and wide speed range Open
In this paper, a new hybrid permanent magnet variable leakage flux (VLF-HPM) motor is proposed. In order to enhance motor speed range, short arc-shaped and elliptical-shaped magnetic barriers are placed on the q-axis magnet circuit, realiz…
View article: Phase shift investigation of dual-three phase V-shaped PM vernier motor for improving torque and power factor
Phase shift investigation of dual-three phase V-shaped PM vernier motor for improving torque and power factor Open
Permanent magnet vernier motor (PMVM) is extremely attractive in low-speed large-torque, whereas it always suffers from poor power factor. In order to realize the cooperative improvement of torque and power factor, this paper applies dual-…
View article: <i>D</i>-<i>Q-</i>axis magnetic field design and investigation of asymmetrical multi-layer flux barriers PM motor for speed regulation enhancement
<i>D</i>-<i>Q-</i>axis magnetic field design and investigation of asymmetrical multi-layer flux barriers PM motor for speed regulation enhancement Open
In this paper, an asymmetrical multi-layer flux barriers permanent magnet (AMFB-PM) motor is proposed. The key of this study is to design the d-q-axis magnetic field reasonably. Firstly, the influence of d-axis inductance on the constant p…
View article: Investigation on sensorless operation of two new fault-tolerant interior permanent magnet motors with trade-off of fault tolerance and flux-intensifying effects
Investigation on sensorless operation of two new fault-tolerant interior permanent magnet motors with trade-off of fault tolerance and flux-intensifying effects Open
In this paper, two new fault-tolerant interior permanent magnet (FT-IPM) motors are proposed and compared for achieving high fault tolerance and sensorless operating capacity under multiple operations. Most previous studies regarding FT-IP…
View article: Low vibration design of a variable leakage flux PM motor considering multiple operating conditions
Low vibration design of a variable leakage flux PM motor considering multiple operating conditions Open
In order to realize the low vibration design, variable leakage flux permanent magnet (VLF-PM) motor is investigated and purposefully optimized. Firstly, the variable flux characteristics of the VLF-PM motor are studied in detail. Then the …
View article: Key technologies for electric vehicles
Key technologies for electric vehicles Open
View article: Technology trends, challenges, and opportunities of reduced-rare-earth PM motor for modern electric vehicles
Technology trends, challenges, and opportunities of reduced-rare-earth PM motor for modern electric vehicles Open
Nowadays, with increasing concerns about environmental pollution and energy crisis electric vehicles are rapidly developing owing to their significant environmental-friendly benefits. To meet the diverse driving requirements of electric ve…
View article: Design and Analysis of a V-Shaped Permanent Magnet Vernier Motor for High Torque Density
Design and Analysis of a V-Shaped Permanent Magnet Vernier Motor for High Torque Density Open
This paper proposes a V-shaped permanent magnet vernier (V-PMV) motor for potential applications in direct drive system. By designing suitable pole slot ratio and adopting the V-shaped PM topology and dummy slots in rotor, the flux leakage…
View article: Single‐phase small capacitor motor drive system with high‐efficiency buck active power decoupling converter
Single‐phase small capacitor motor drive system with high‐efficiency buck active power decoupling converter Open
This paper proposes a novel active power decoupling circuit (APDC) based on modified Buck converter to reduce the DC‐link voltage ripple of small capacitor motor drive systems. The APDC is placed between the Boost PFC circuit and the DC‐li…
View article: Different Active Disturbance Rejection Controllers Based on the Same Order GPI Observer
Different Active Disturbance Rejection Controllers Based on the Same Order GPI Observer Open
As the higher-order or generalized extended state observer (ESO), generalized proportional-integral (GPI) observer (GPIO) have been proposed to enhance the active disturbance rejection (ADR) control (ADRC) systems disturbance rejection abi…
View article: Comparative Study of Stepwise Optimization and Global Optimization on a Nine-Phase Flux-Switching PM Generator
Comparative Study of Stepwise Optimization and Global Optimization on a Nine-Phase Flux-Switching PM Generator Open
In this paper, the design procedure and optimization process of a multi-phase flux-switching permanent magnet (FSPM) generator for wind power generation system is investigated. Two different optimization methods—stepwise optimization and g…
View article: Torque Ripple Reduction of PMSM With Small Capacitor Drive Systems Based on Combined Control Method
Torque Ripple Reduction of PMSM With Small Capacitor Drive Systems Based on Combined Control Method Open
Small capacitor motor drive systems have received increased attention due to higher reliability and longer lifespan. However, small capacitor motor drive systems suffer from poor dynamic performance and larger torque ripple. In this paper,…
View article: Electromagnetic–Mechanical Coupling Optimization of an IPM Synchronous Machine with Multi Flux Barriers
Electromagnetic–Mechanical Coupling Optimization of an IPM Synchronous Machine with Multi Flux Barriers Open
In this paper, an interior permanent magnet (IPM) synchronous machine with multiflux barriers is proposed to meet the wide speed regulation application requirements of electric vehicles. Based on the flux barrier characteristic, an electro…
View article: Dual Quasi-Resonant Controller Position Observer Based on High Frequency Pulse Voltage Injection Method
Dual Quasi-Resonant Controller Position Observer Based on High Frequency Pulse Voltage Injection Method Open
This paper proposed a dual quasi-resonant controller position observer for conventional pulsating high frequency voltage injection method. The proposed position observer can not only improve the dynamic performance of the sensorless contro…
View article: ANALYSIS AND OPTIMIZATION OF DOUBLE-SIDE HYBRID EXCITATION FLUX-SWITCHING MOTOR
ANALYSIS AND OPTIMIZATION OF DOUBLE-SIDE HYBRID EXCITATION FLUX-SWITCHING MOTOR Open
In this paper, a double-side hybrid excitation flux-switching (DSHE-FS) motor employing a double stator structure with special multi-excitations is presented.The high space utilization improves the torque density and power density of DSHE-…
View article: Decoupling control of a dual‐stator linear and rotary permanent magnet generator for offshore joint wind and wave energy conversion system
Decoupling control of a dual‐stator linear and rotary permanent magnet generator for offshore joint wind and wave energy conversion system Open
Wind and wave energy are the main forms of offshore energy. In this study, a new joint wind and wave energy (JWWE) power conversion system, which simultaneously features wind power generation and wave power generation, is investigated. In …
View article: Optimisation design of a flux memory motor based on a new non‐linear MC‐DRN model
Optimisation design of a flux memory motor based on a new non‐linear MC‐DRN model Open
In this study, based on a magnetisation‐controllable dynamic reluctance network (MC‐DRN) model, an optimisation design method with an efficient modern evolution algorithm for the flux memory motor is proposed. To clarify the method conveni…
View article: IMPROVED SLIDING MODE OBSERVER FOR POSITION SENSORLESS OPEN-WINDING PERMANENT MAGNET BRUSHLESS MOTOR DRIVES
IMPROVED SLIDING MODE OBSERVER FOR POSITION SENSORLESS OPEN-WINDING PERMANENT MAGNET BRUSHLESS MOTOR DRIVES Open
View article: Indirect Analytical Modeling and Analysis of V-Shaped Interior PM Synchronous Machine
Indirect Analytical Modeling and Analysis of V-Shaped Interior PM Synchronous Machine Open
In this paper, an indirect analytical method is presented to analyze and optimize the electromagnetic performances, such as air-gap flux density, back EMF, cogging torque, and etc. of the V-shaped interior permanent magnet (PM) synchronous…