Yaw angle control is an essential function in every autonomous vehicle system. In this paper, a novel yaw angle control method for vehicle is proposed. Because the attitude of vehicle obtained from on-board GPS receiver is not only delayed but also at low rate in comparison with the control frequency of EPS servo drives, it is impossible to use GPS directly in yaw angle control loop. By integra...

Torpedoes play an irreplaceable role in naval warfare; therefore, it is significant to study the dynamic response of direct navigation torpedoes. In order torpedoes under different Munk moment coefficients, equation established based on momentum theorem and theorem. The linear motion mathematical model obtained. relationship between torpedo coefficient derived. straight-line moments established...

Abstract: Robust decoupling of the lateral and yaw motions of a car has been achieved by feedback of the integrated yaw rate into front wheel steering. In the present paper the yaw disturbance attenuation is analyzed for a generic single-track vehicle model. The frequency limit, up to which yaw disturbances are attenuated, is calculated. For specific vehicle data, it is shown that this control ...

Predicting ship resistance in shallow water conditions is very important for the operational considerations of a ship. Shallow waters greatly affect viscous resistance, wave and also propulsion efficiency. This study aims to determine effect depth on ferry. The CFD method was used simulate this phenomenon its effects hull starting from coefficient surge force, sway force yaw (hydrodynamic momen...

Two objectives dominate consideration of control moment gyroscopes for spacecraft maneuvers: high torque (equivalentlymomentum) and singularity-free operations.This paper adds to the significant bodyof research toward these two goals using a minimal three-control-moment-gyroscope array to provide significant singularity-free momentum performance increase spherically (in all directions) by modif...

Individual pitch control (IPC) for reducing blade loads has been investigated and proven successful in recent literature. For IPC, the multi-blade co-ordinate (MBC) transformation is used to process the blade load signals from the rotating to a stationary frame of reference. In the stationary frame of reference, the yaw error of a turbine can be appended to generate IPC actions that are able to...

To enhance vehicle maneuverability and stability, a controller with 4-wheel steering (4WS), electronic stability control (ESC) torque vectoring device (TVD) under constraint on the front slip angles is designed in this research. In controller, allocation method adopted to generate yaw moment via 4WS, ESC TVD. If angle added for generating moment, performance of can be further deteriorated. This...

PURPOSE The plane 2D model and 3d finite element model of the headgear attached to two molars with different mesio-distal location are studied to show the asymmetric mechanical effects produced by symmetrically loaded headgear. In daily dental practice the asymmetrical location of molars is usually ignored. METHODS Six 3D finite element models of a symmetric cervical headgear were designed in...