OBJECTIVES The purpose of this study was to establish reliability and responsiveness of the dynamic visual acuity test (DVAT) at head speeds of 150-200 degrees per second (deg/s) and the gaze stabilization test (GST) in high school and college football players. DESIGN Reliability design. PARTICIPANTS Fifty high school and college football athletes completed the DVAT and GST in both the yaw ...

The application of conventional wind turbines on board a vessel creates a number of new challenges for turbine control systems. Thrust force is used in marine applications as an additional control variable for propulsion of the vessel. Variability of the wind speed and wind direction, together with the yaw rate and range constraints, impose strong requirements on the turbine control system. A n...

One of the main systems for ground vehicles is Electric Power Assisted Steering (EPAS). Due to its importance, a redundant system usually implemented. This solution remain however expensive, especially small urban cars. paper proposes an alternative fail-safe control algorithm using this time differential braking. Controlling each brake apart generates yaw moment enabling turning vehicle. Optim...

An anti-rollover control algorithm based on the Time-To-Rollover (TTR) metric is proposed in this paper. A simple model with steering and direct yaw moment control inputs was constructed to calculate the TTR in real-time. The TruckSim dynamic simulation software was used to verify the control performance, as well as to simulate the system dynamics in the UM-Oakland driving simulator. Both the s...

In this paper, a novel vehicle dynamics controller is proposed by combining two control loops which are formed by the individually actuated wheel braking and steering regulator. The inner braking loop regulates the individual tire force generation and prevents tire force saturation with respect to tire slip. When the tire forces are regulated to operate in the linear region of their nonlinear c...

Several approaches for modelling the longitudinal aerodynamic coefficients of a fighter aircraft at high angles of attack, including the unsteady effects are presented. A traditional approach where the model of the coefficient arises in the form of the steady and unsteady effects, the unsteady effect being modelled by means of transfer functions. The second approach uses an internal variable de...

Abstract. In wind plants, turbines can be yawed into the to steer their wakes away from downstream and achieve an overall increase in plant power. Mathematical optimization is typically used determine best yaw angles at which operate a plant. this paper, we present new heuristic rapidly method, define turbine as Boolean – either predefined angle or nonyawed opposed typical methods of defining c...

The authors have focused on the bipedal humanoid robot expected to play an active role in human living space, through studies on an anthropomorphic biped walking robot. As the first stage of developing a bipedal humanoid robot, the authors developed the human-size 35 active DOF bipedal humanoid robot “WABIAN” and the human-size 41 active DOF bipedal humanoid robot “ WABIAN-R”. The authors also ...