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This brief presents a new control framework of electric power steering (EPS) systems for ground vehicles based on admittance control. An impedance filter is used to define the desired admittance of the system under the torsion bar (T-bar), and a position tracking control loop is used to enforce its apparent admittance. A road feedback path implemented with a road feedback filter provides the driver...
In modern society, more and more people are suffering from stress. The accumulation of stress will result in poor health condition to people. Effectively detecting the stress of human being in time provides a helpful way for people to better manage their stress. Much work has been done on recognizing the stress level of people by extracting features from the bio-signals acquired by physiological sensors...
Along with reducing the centrifugal force based on decreased speed using vehicle braking, the maximum lateral force of the wheel could bear diminishing gradually. In this paper, the deficiency of vehicle's anti-lock braking system on cornering road is analyzed, a control strategy of vehicle braking on low adhesive cornering road is presented, vehicle's ABS and the biggest lateral force of the wheel...
With the society's advocacy of "low-carbon energy-saving" way of life, saving energy has been a heated topic. Although the street lamp is an indispensable part of the basic facilities of a city, its large energy consumption at present has wasted a lot of natural resources. In order to solve this problem, many scientific researchers provide many solutions by using software or hardware methods...
In this paper, we present VLSP, a Vehicular Location based Service with Privacy grantees. In VLSP, we assume the service provider is untrusted and users do not have pre-established social relationships with each other, we use standard cryptographic primitives, Broadcast Encryption (BE) and Attribute-based Encryption (ABE) to provide privacy guarantees. By using VLSP, we are able to protect users'...
A new spatial analytical method is developed from a hypernetwork model of cellular automata (CA) to analyze the dynamic flow of urban traffic. This ground-breaking model focuses on the decomposition of traffic lanes, which then contributes to the scientific traffic projection. The hypernetwork model consists of hypernodes and hyperedges at the macro level. The hypernodes are defined by one-dimensional...
Joint-distribution can reduce the less-than-truck-load (LTL) shipping, so that it is important to metropolis, where individual logistic firms are usually small and can not obtain economies of scale. Unfortunately, most of existing web-platforms of common logistics can not play its pre-determined role of join-distribution because of lacking of the incentive mechanism and cost allocation mechanism among...
The driveline system of the heavy truck is usually composed of clutch, transmission, transfer case, drive shaft, etc. A fluid torque converter could be equipped in front of the transmission in order to improve the starting performance. Also, a hydraulic retarder could be introduced for auxiliary braking so as to adapt the truck to the brake on the long downgrade in mountainous regions. Thus, the driveline...
Durability allocation is an important part of durability design in mechanical system. Whether durability allocation is reasonable or not directly impacts the pertinence and validity of maintenance. When designing durability, lifetime data of components is necessary. The way to obtain lifetime is normally through test which takes so long and cost so much so that it cannot be adopted at initial stage...
This paper investigates the applicability of Pursuit Algorithm (PA), including Classic Pursuit Algorithm in Circle (ClaPAIC) and Cyclic Pursuit Algorithm (CyPA) into the field of space missions. The implementation of PA has been applied to a number of typical scenarios: formation replenishment, rendezvous and docking and formation reconfiguration. Simulation results show the effectiveness when ClaPAIC...
Vehicular ad hoc network (VANET), a subclass of mobile ad hoc networks (MANETs), is a promising approach for future intelligent transportation system (ITS). Understanding and modeling packet error in the VANET is especially relevant to the design and analysis of higher layer wireless communication protocols. In this paper, the analysis of the packet error characteristics based on measurements in live...
In this paper we present empirical results from a study, examining the effects of environmental diversity on vehicle-to-vehicle link in vehicular ad hoc networks (VANET). And packet loss rate (PLR) and received signal strength indicator (RSSI) of the wireless link are measured. The results of the measurement indicate that environment affects the quality of the wireless link in VANET greatly; the average...
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