Kehui Ma

Frequency-dependent degradation mechanisms of lithium-ion cells under vehicle dynamic load spectra

Kehui Ma, Tiezhu Zhang, Hongxin Zhang, Zhen Zhang et autres

cn (code pays fourni par la source)

A time-varying delay control method based on equivalent frequency band for preview suspension systems

Kehui Ma, Sujuan Shao, Tiezhu Zhang, Liqun Lu et autres

cn (code pays fourni par la source)

Energy Conversion and Management Strategies for Electro-Hydraulic Hybrid Systems: A Review

Lin Li, Tiezhu Zhang, Liqun Lu, Kehui Ma et autres

The electro-hydraulic hybrid system has emerged as a critical technology in new energy vehicles, owing to the remarkable power density and efficient energy regeneration capabilities of hydraulic technology, coupled with the high energy density of electric power. This system effectively enhances vehicle …

cn (code pays fourni par la source)

A Comparative Study of Time Delay Control With Different Feedback States on Vehicle Body Vibration Reduction and System Stability Region

Kehui Ma, Binbin Sun, Dehao Kong, Xiaopeng Li et autres

cn (code pays fourni par la source)

Research on an evaluation method of day-ahead wind power consumption capacity of the distribution network based on comprehensive evaluation theory

Xiaofang Meng, Nannan Zhang, Kehui Ma, Shuang Liu

This paper proposes an evaluation method of the distribution network’s day-ahead wind power consumption capacity based on the comprehensive evaluation theory. This aims to evaluate the distribution network’s operational stability, economy, and cleanliness under load and wind power uncertainty. The distribution network’s …

cn (code pays fourni par la source)

Simulation on the effects of compression ratio and hydrogen blending ratio on the characteristics of a hydrogen-fueled hydraulic engine (HFHE)

Zehao Sun, Tiezhu Zhang, Liqun Lu, Yuan Qu et autres

cn (code pays fourni par la source)

Optimization Study of Trajectory Tracking Algorithm for Articulated Vehicles Based on Adaptive Sliding Mode Control

Lin Li, Tiezhu Zhang, Zehao Sun, Kehui Ma

Unmanned underground articulated dump trucks (UADTs) are an important direction for the coal mining industry to vigorously promote automation and intelligence. Among these, tracking and controlling the motion trajectory is the key weak link. This paper presents a kinematic analysis of the …

cn (code pays fourni par la source)

Dynamic response and stability analysis of vehicle systems with double time-delay feedback control

Kehui Ma, Chuanbo Ren, Tiezhu Zhang, Binbin Sun et autres

In this paper, the vehicle suspension dynamic response of time delay feedback control is analyzed considering the suspension of the seat. An active suspension vibration reduction control method based on double time-delay feedback control is proposed to further improve the ride comfort. …

cn (code pays fourni par la source)

Mechanism of time-delay feedback control of suspension damping with an annular vibration-absorbing structure

Yajie Chen, Kehui Ma, Chuanbo Ren, Pengcheng Zhou

With the aim of enhancing both the ride comfort and the safety of the vehicle, we propose a new type of suspension with an annular vibration-absorbing structure, and establish a 3-DOF 1/4 vehicle model. The structure parameters and time-delay feedback control parameters …

cn (code pays fourni par la source)

A New Suspension with Annular Vibration Absorption Mechanism for Double Time-Delay Feedback Control

Yajie Chen, Chuanbo Ren, Kehui Ma, Pengcheng Zhou et autres

cn (code pays fourni par la source)

A New Vibration-Absorbing Wheel Structure with Time-Delay Feedback Control for Reducing Vehicle Vibration

Kehui Ma, Chuanbo Ren, Yongguo Zhang, Yuanchang Chen et autres

To address the contradiction between ride comfort and handling stability, a new vibration-absorbing wheel structure with time-delay feedback control was proposed by applying a time-delay feedback-controlled dynamic vibration absorber to the wheel structure. Using H2 optimization and the particle swarm optimization algorithm …

cn, us (code pays fourni par la source)

Effect of time-delay feedback control on vehicle seat vibration reduction and suspension performance

Kehui Ma, Yongguo Zhang, Chuanbo Ren, Yajie Chen et autres

To reduce seat vibration caused by uneven road surfaces, the time-delay feedback control into the seat suspension system was introduced and an active seat suspension control method based on time-delay feedback was proposed in this paper. A three-degree-of-freedom (3-DOF) suspension model with …

cn, us (code pays fourni par la source)