Recently, automatic steering systems for emergency obstacle avoidance have been studied extensively. The control input of such active steering control systems can be classified into the steering angle and the steering torque input. The steering torque based control provides some degree of freedom for drivers to control the vehicle motion, thus it has potential for development as steering assist...

Skid-steering mobile robots are widely used because of their simple mechanism and robustness. However, due to the complex wheel-ground interactions and the kinematic constraints, it is a challenge to understand the kinematics and dynamics of such a robotic platform. In this paper, we develop an analysis and experimental kinematic scheme for a skid-steering wheeled vehicle based-on a laser scann...

In this paper, an original expandable mechanism for unfolding wheels is proposed. This mechanism combines two elementary mechanisms. One allows the deployment of the rim while the other one ensures the contact shape adaptation. In the first section, we analyse the different deployment mechanisms already proposed in the literature. Then, the design of the rim expansion mechanism is described and...

In this paper, an original expandable mechanism for unfolding wheels is proposed. This mechanism combines two elementary mechanisms. One allows the deployment of the rim while the other one ensuring the contact shape adaptation. In a first section, we analyse the different deployment mechanisms already proposed in the literature. Then, the design of the rim expansion mechanism is described and ...

In this paper, we present a data-driven approach to generate realistic steering behaviors for virtual crowds in crowd simulation. We take advantage of both rule-based models and data-driven models by applying the interaction patterns discovered from crowd videos. Unlike existing example-based models in which current states are matched to states extracting from crowd videos directly, our approac...

this research presents a guidance-assistance system for agricultural swing machines. the new automatic steering system controls the vehicle based upon the position of the traces of the previous operation carried out on the field. for each image the trace of the tilled soil by seed drill is placed either on the center line, or on either side of the line. for traces coinciding with images' c...

[Abstract] An automated E/H steering controller is essential for autonomous off-road equipment. This paper presents a methodology for designing the E/H steering controller through a combination of testing and simulation. The steering kinematic model provides the steering linkage gain between the hydraulic actuator and the front wheel. The model makes it possible to close the steering control lo...

There are a variety of factors affecting steering performance on off-road vehicles, including vehicle dynamics and soil stiffness. It is essential to understand the steering dynamics for designing a reasonable electrohydraulic (E/H) steering control system for wheel-type tractor. A computer-controlled E/H steering simulator, consisting of a steering actuator and a steering load simulator, is an...

We report six-dimensional quantum dynamical calculations of dissociative adsorption and associative desorption of the system H2/Pd(100) using an ab initio potential energy surface. We focus on rotational effects in the steering mechanism, which is responsible for the initial decrease of the sticking probability with kinetic energy. In addition, steric effects are briefly discussed. Typeset usin...

In this paper, we demonstrate a method of using the ICENI Grid middleware as a mechanism for deploying fully extensible collaborative visualisation environments. Various collaboration scenarios can be composed according to session requirements by means of a component-based Grid system, which includes display capabilities, steering capabilities and the ability for graphic output streaming over t...