Vehicular Ad hoc Network (VANET) is an enabling technology to provide a variety of convenient services in intelligent transportation systems, and yet vulnerable various intrusion attacks. Intrusion detection systems (IDSs) can mitigate the security threats by detecting abnormal network behaviours. However, existing IDS solutions are limited detect behaviors under local sub-networks rather than entire VANET. To address this problem, we utilize deep learning with generative adversarial...

<div>As a carbon-free power with excellent performance, the direct injection (DI) hydrogen-fueled internal combustion engine (H<sub>2</sub>-ICE) has potential to contribute carbon dioxide (CO<sub>2</sub>)-neutral on-road transport solutions. Aiming at high thermal efficiency, influences of key factors on efficiency over wide operating conditions turbocharging DI H<sub>2</sub>-ICE were investigated under lean-burn strategy. And nitrogen oxides...

There is still a lack of effective monitoring methods for resistance spot welding expulsion in manufacturing sites. In this study, more than 63,766 dynamic curves points were collected sites, and the machine learning method applied to monitor expulsion. Generally, model's generalisation ability poor due complex conditions site. This study solves problem by improving data preprocessing model selection method. The experimental results show that when process parameters do not change, accuracy...

An entirely new change-rule of an arc shape was found in the pulsed ultrasonic assisted tungsten-electrode inert gas welding process (PU-TIG), i.e., had obvious characteristic periodic changes under actions a wave PU-TIG. However, were different between white bright zone and dark zone. The varying that went through from expansion to contraction re-expansion. Meanwhile, constantly changing acoustic radiation force electromagnetic main cause change PU-TIG process.

To mitigate the issues of scalability and reliability in centralized SDN, distributed SDN has emerged. However, cyber attacks become increasingly serious. Since each controller can only obtain network flows its sub-network, a single with biased flow information cannot detect all types entire overall detection is challenge. solve problem, we propose collaborative anomaly scheme which enables multiple controllers jointly train global model to identify attacks. We evaluate performance based on...

PID controller is widely used in industry. This paper proposed a method of self-tuning parameters based on simplex method. The principle first introduced and then the self-tuning. easily realized step by step. It implemented CNC machine tool. experiment shows that optimized are good machining performance improved.

This paper proposes a path tracking control algorithm of tracked mobile robots based on Preview Linear Model Predictive Control (MPC), which is used to achieve autonomous driving in the unstructured environment under an emergency rescue scenario. It future trend realize communication and equipment with 6G edge cloud cooperation. In this framework, linear MPC (LMPC) suitable for due its advantages less computing resources good real‐time performance. However, such scene, complex curvature...

In nano/micro cutting process, the surface quality is heavily dependent on all dynamic factors in machining including those from material, tooling, parameters, servo accuracy, mechanical structure deformation and non-linear as well. The machined surfaces are generated based tool profile real path combining with various external internal disturbances. To bridge gap between conditions quality, integrated simulation system presented involves control/drive generation module. It takes into...

For a class of three-loop architecture motion control system, two-stage closed loop identification is introduced to solve the problem biased estimation. Using this method bridge transfer function identified firstly so that vector can be reconstructed uncorrelated with noise. Then, plant estimated.

Wire bonder is important equipment in semiconductor post-packaging. In this paper, a speed observer applied the motion control system for XY-stage of wire bonder. A simplified friction model introduced to take place traditional compensator. With manual tuning steps, can be easily and exactly identified. The compensator designed by pole placement. As experiments results showing, high acceleration achieved applying structure. efficiency bonding process significantly improved.

An atmospheric model is presented for super pressure control of airships under different movement states. By analyzing the changes each state variable during longitudinal movements strategies, both and airship are established. During simulations airship's ascent, float descent with control, strategies studied respectively. In order to prove correctness models feasibilities state, a simulation system VC6.0 manual mode automatic established, which capable describe whole process control....

Parametric interpolation has many advantages over linear in machining parts. This paper proposes a real-time look-ahead algorithm for tool path which been modified to line segments and spline curve by arrangement fitting. By applying the whole algorithm, feedrate would be changed according characteristic of capability machine tool. Simulation results indicate that developed parametric can reach satisfying result.

Wire bonder is a typical high speed machine. The motion of XY-stage the key factor bonding efficiency. However, phase lag elements in servo system limit bandwidth and slow down system’s response. A predictive velocity observer proposed to compensate for those lags. Then, loop controller can be designed as which does not have Loop gains are enlarged correspondingly. improved settling time decreased. Experiment results verify that provided significant lead performance wire improved.

A bond head with spring bearing has steady-state error problem in position loop control. To maintain high speed and precision control, a force compensator is proposed this paper. Firstly, the system modeled stated. Then, close identification method for advised. The also compared traditional controller. In experiment part, result shows new control works well.

With the development of Edge Computing (EC), security issues have raised concerns. Due to unusual vulnera-bility EC servers and distributed nature attack sources, it is a great challenge efficiently effectively defend against DDoS attacks. Existing detection solutions, based on feedback under attacks, can incur high bandwidth costs degradation service performance. To address this problem, we propose novel collaborative prediction framework, called CoWatch. Based software-defined network...