Abstract: A servo-controlled system is disclosed for providing simulated feel equivalent to that of traditional mechanical hand controllers. Processed position and force sensor signals are used in a feedback loop that controls the motor mechanically connected to the stick. The feedback loop comprises a low-level motor feedback loop, and high-level force feel loop. The latter comprises static and dynamic performance components. The system allows variable and additional force cues to be specified externally to the system and felt by the operator, and/or external signal to backdrive die stick to follow a specified motion. The control framework permits the electronic coupling of motion and applied forces by pilots in a dual arrangement while retaining the above-mentioned features. It simulates cross-coupling mechanical compliance due to force fight between pilots detents and asymmetric force feel gradients. Parameters associated with loops and performance components can be specified independently.

Abstract: An all-terrain vehicle (ATV) includes various storage compartments so that the weight loaded onto the vehicle may be evenly distributed between the front and rear suspension of the ATV. The ATV is capable of hauling a variety of loads over various terrains. The ATV contains a rear storage compartment, at least two side storage compartments, a front storage compartment, and a front rack to enable the rider to carry or attach a wide variety of loads onto the ATV without causing the vehicle to overturn or flip up due to the additional weight. Additionally, the ATV may also include a tree guard positioned on each side of the ATV to protect the rear storage and side compartments and to prevent cargo on the rear storage compartment from being dislodged by trees that might protrude into the rider's path.