An important aspect of an automated highway system design is the synthesis of an automatic vehicle following system. Associated with automatic vehicle following systems is the problem of the stability of a string of vehicles, i.e., the problem of spacing error propagation, and in some cases, amplification upstream from one vehicle to another, due to some disturbance at the head of the string. R...

Vehicle rollover represents a significant percentage of single-vehicle accidents and accounts for over 9000 fatalities and over 200,000 non-fatal injuries each year. Previous research has yielded rollover stability control systems that are effective in on-road conditions.Accident statistics show, however, that over 90% of rollovers involve road departure, during which a vehicle may encounter sl...

In recent years, two-wheeled inverted pendulum vehicles realizing high mobility have been developed. In such vehicles, an inverted pendulum control system maintains the vehicle’s stability by only using the two driving parallel wheels. Therefore, the gravity center of the vehicle body with a passenger is higher than the wheel axis, and the vehicle is moved by leaning the vehicle body forward or...

An AFS (active front steering) on the basic of a C-EPS (column electric power steering) system was developed. Based on the mathematical model of essential components, the AFS controller was designed covering two units: an EPS actuator unit was used to reduce the steering torque requirement to the driver; an AFS actuator unit was used to compensate the steering angle for steering characteristics...

Integrated vehicle dynamics control with the coordination of several vehicle subsystems is considered. The proposed algorithms of subsystem coordination based on restriction weights into the optimal control allocation allow to achieve lower energy consumption without significant impairment of stability of motion and vehicle handling compared with standard control allocation. The proposed contro...

This paper describes that the stability for vehicle to vehicle (V2V) communication in Internet of Vehicles (IoV). The V2V communication is important factors for intelligent transportation system that is fast becoming commercialization. In this paper, we particularly focus on the vulnerabilities of the authentication form used as an essential factor in communication between vehicles. We propose ...

Vehicular Ad-hoc Network (VANET) is an important component of intelligent transportation systems, in which vehicles are equipped with on-board communication devices which enable vehicle-to-vehicle communication. Consequently, with regard to larger communication due to the greater number of vehicles, stability of connectivity will be a challenging problem.Clustering technique as one of the most ...

Plug-in electrical vehicles (PEV) are capable of both grid-to-vehicle (G2V) and vehicle-to-grid (V2G) power transfer. The advantages of developing V2G include an additional revenue stream for cleaner vehicles, increased stability and reliability of the electric grid, lower electric system costs, and eventually, inexpensive storage and backup for renewable electricity. Here we show how smart con...

Active front steering (AFS) is an emerging technology to improve the vehicle cornering stability by introducing an additional small steering angle to the driver's input. This paper proposes an AFS system with a variable gear ratio steering (VGRS) actuator which is controlled by using the sliding mode control (SMC) strategy to improve the cornering stability of vehicles. In the design of an AFS ...

In this paper, stability of a formation of vehicles coupled through a communication pattern which changes over time is examined. This analysis uses the graph theoretic techniques developed by Fax and Murray (2002a) in their analysis of vehicle formations with static communication patterns. The graph Laplacian stability properties defined by Fax and Murray are extended to include dynamic sensing...