نتایج جستجو برای: car body acceleration
تعداد نتایج: 835531 فیلتر نتایج به سال:
This paper presents a system that attempts to encourage a person to drive their best. It is based on sensors found in a standard car and focuses on how to recognize when and how to give feedback to a car driver. Focusing on tactile feedback, the system notices missing turn signals, erratic driving, acceleration and de-acceleration. It focuses on tactile and simple feedback for the controls. It ...
Due to factors such as uneven guide rails and airflow disturbance in the hoistway, high-speed elevators may experience significant vibrations during operation. This paper proposes an optimized fractional-order PID (FOPID) method suppress of elevators. First, accurate horizontal vibration model is established for elevator car, which car frame body are separate. Then, taking control cost system p...
The well-established quarter car representation is used to investigate the design of an active suspension system for a racing car. The work presented is from both a practical and theoretical study. The experimental open-loop and passive responses of the suspension system are used to validate the model and estimate the level of damping within the system. A cascade control structure is used, cons...
Purpose: Predicting body Center of Mass (COM) acceleration is carried out with more accuracy based on the acceleration of three joints of lower limb compared to only accounting joints of hip and ankle. Given that trunk movement during quite standing is noticeable, calculating trunk acceleration in model might increase prediction accuracy of COM acceleration. Moreover, in previous research studi...
Railway tracks must be managed appropriately because their conditions significantly affect railway safety. Safety is ensured through inspections by track maintenance staff and based on measurements using dedicated geometry cars. However, maintaining regional conventional methods becoming difficult of poor financial condition lack manpower. Therefore, a diagnostic system developed, wherein onboa...
The purpose of this study is emphasized on searching for the ergonomic child safety seating design to reduce the neck injuries during forward car collision. The new designed prototype of ergonomic safety seat, featuring with two cushions under the seat, buffering device in the back-rest support and lowery placing the child restrain belt through the rear side of the seat, is suitable for the use...
The effect of track geometry on vehicle vibration is a major concern in high-speed rail (HSR) operation from the perspectives ride comfort and safety. However, how to quantitatively characterize relation between them remains problem be solved quality assessment. By using fractal analysis, this paper studies detailed correlation surface alignment irregularities car body vertical lateral accelera...
In Intelligent Vehicular Networks, featured as car-to-car and car-toinfrastructure wireless communication, most applications need important location information or credential information. We address a location-based encryption method that not only ensures messages confidentiality but also authenticates identity and location of communication peers. The authentication of location means that a mes...
To properly assess the impact of (cooperative) adaptive cruise control ACC (CACC), one has to model vehicle dynamics. First of all, one has to choose the car following model, as it determines the vehicle flow as vehicles accelerate from standstill or decelerate because of the obstacle ahead. The other factor significantly affecting the intersection throughput is the maximal vehicle acceleration...
and damper do not provide energy to the suspension system and control only the motion of the car body and wheel by limiting the suspension velocity according to the rate determined by the designer, T~ the above problem, active suspension systems have been proposed by various [3,4,51. Active suspension systems dynamically respond to changes in the road profile because of their ability to supply ...
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