OpenStreetMap (OSM) is a low-cost promising alternative to provide the environment representation with global consistency when pre-built LiDAR maps are not available. However, existing descriptor-based perception-OSM matching methods suffered from significant disparities in dimension and precision compared perception map, leading degradation of accuracy. To improve accuracy robustness matching-based position initialization using OSM, this paper proposes novel boundary-relative orientation...

This article addresses dynamic authority allocation strategy and security-based resilient event-triggered output feedback lane keeping control (LKC) problem for human–machine cooperative steering intelligent heavy truck subject to nonperiodic energy bounded denial-of-service (DoS) attacks. For of considered LKC system, designed practical easily-to-implement factor (CAF) is adaptively adjusted by the correlation characteristics between buffered interested states first time. derived fuzzy...

This article addresses the hierarchical resilient event triggered sampled-data security control and valve opening management problem for networked hysteretic leaf spring hydro-suspension with asymmetric actuator under false injected deception attack. For derived Takagi–Sugeno (T–S) fuzzy model employed to tackle hysteresis nonlinearity, a new full-order dynamic output feedback top improved error threshold functions mechanism is proposed generate target force so as suppress body tire...

In this paper, a new hydraulically interconnected suspension (HIS) system is proposed for the implementation of resistance control pitch and bounce modes tri-axle heavy trucks. A lumped-mass half-truck model established using free-body diagram method. The equations motion mechanical hydraulic coupled are developed by incorporating strut forces into subsystem as externally applied forces. transfer matrix method (TMM) used to evaluate impedance consisting models fluid pipes, damper valves,...

Abstract This paper presents a novel (SPC) scheme for the path following of autonomous vehicles (AVs) subject to denial service (DoS) attacks. First, by considering energy constraints DoS attacks, bounded but arbitrary packet dropouts is used characterize effects Then, switched control system model established describe AVs under In what follows, SPC scheme, which depends on detection dropout from actuator side, developed compensate while there are no feedback measurements available. The main...

Electric vehicles generally have a better noise, vibration, and harshness quality than traditional due to the relatively quiet electric motors. By contrast, issues of driveline system become more outstanding significant in absence “masking effect” by engine. The electrification powertrain has also brought many changes sources or transmission which led some new issues. Specifically, intense vibration prototype bus appears when driving third gear, makes passengers uncomfortable. This paper...

Optimizing the performance of alkali-activated slag backfill grout (ASBG) is crucial for engineering applications. Fluidity and 28 d unconfined compressive strength (28 UCS) are two most important performances multi-objective optimization existed. In this research, response surface method (RSM) experiment design model regression, non-dominated sorting genetic algorithm II (NSGA-II) optimization, entropy-based Technique Order Preference by Similarity to Ideal Solution (TOPSIS) decision-making...

Abstract Both drought and freezing-thawing of stems induce a loss hydraulic conductivity (percentage [PLC]) in woody plants. Drought-induced PLC is often accompanied by physical damage to pit membranes, causing shift vulnerability curves (cavitation fatigue). Hence, if cavitated are flushed remove embolisms, the next curve different (shifted lower tensions). The 84K poplar (Populus alba × Populus glandulosa) clone has small vessels that should be immune from frost-induced PLC, but results...

Summary A mode decoupling control strategy is proposed for the active Kinetic Dynamic Suspension Systems (KDSS) with electrohydrostatic actuator (EHA) to improve roll and warp performances. matrix transfer method employed derive modes of body wheel station motions full vehicle KDSS. The additional stiffness produced by KDSS obtained quantitatively described typical physical parameters. new hierarchical feedback motion performances simultaneously accounting nonlinear dynamics actuators...

This paper proposes a new method to investigate the characteristics of pitch-resistant hydraulically interconnected suspension (HIS) systems for two-axle vehicles in pitch plane. The equations motion mechanical and hydraulic coupled system are developed, which strut forces derived using impedance transfer matrix method. stiffness damping matrices described manner similar generalized form uncoupled conventional (UCS) systems. additional properties HIS explicitly via physical parameters. Based...

Uncertainties widely exist in modeling parameters of industrial robots due to wear during service. These uncertainties are too small be directly measured and may severely affect the positioning accuracy end-effector through multi-stage propagation. An uncertainty inverse analysis method is proposed identify typical structural with selected optimal position information. The Denavit–Hartenberg employed establish kinematic model. For probability parameters, model, which reflects propagation...

Abstract Compared to passive and semi‐active suspensions, active suspensions have the capacity overcome tradeoff design of vehicle ride comfort handling performance. In this paper, a new control system with modified spherical simplex UKF (SSUKF) observer sliding mode force tracker is proposed for electrohydraulic suspensions. The estimated states obtained from SSUKF are used derive energy body motion target demanded forces suspension actuators. A controller presented drive actuators track...

A novel uncertainty propagation method based on manifold learning and optimal polynomial model is proposed to quantify analyze the dynamic uncertainties of nonlinear feedback control system. To deal with multiple objectives constraints problem, a barrier Lyapunov-function-based filtered backstepping controller developed applied active suspension system obtain superior ride comfort performance under limited structural constraints. Considering errors in production, manufacturing, assembly,...