This study aimed to validate a bespoke 3D-printed phantom for use in quality assurance (QA) of 6 degrees-of-freedom (6DoF) treatment couch. A novel design comprising main body with internal cube structures, was fabricated at five centres using Polylactic Acid (PLA) material, an additional produced incorporating PLA-stone hybrid material. Correctional setup shifts were determined image registrat...

When the Wright Brothers pioneered powered flight in 1903, their genius lay in conquering the three axes of control: pitch, yaw, and roll. Over the years, technologies advanced, planes crashed, and aviation evolved to compensate. By 1952, the Wright’s original airplane was barely recognizable in a world of jets and even supersonic aircraft, which were nonetheless still governed by the same thre...

 The un-augmented open loop 6-DOF Aerosonde exhibits poor stability and control characteristics in compliance with MIL-F8785C flying quality standards.  As in most classical fixed wing aircrafts, the control inputs to Aerosonde result in pitch, roll and yaw rate responses (rate command characteristics). This has made manual trimming of the UAV, at a given flight condition, with a human pilot-...

1 Summary High speed video observations of free flying male Aedes aegypti mosquitoes, the dengue and yellow fever vector, along with custom measurement methods, enable measurement of wingbeat frequency, body position and body orientation of mosquitoes during flight. We find these mosquitoes flap their wings at approximately 850 Hz. We also generate body yaw, body pitch and wing deviation measur...

The fastigial nucleus (FN) receives vestibular information predominantly from Purkinje cells of the vermis. FN in the monkey can be divided in a rostral part, related to spinal mechanisms, and a caudal part with oculomotor functions. To understand the role of FN during movements in space, single-unit activity in alert monkeys was recorded during passive three-dimensional head movements from ros...

The Autonomous Submarine Surface Vehicle is a type of unmanned underwater vehicle. When the ship performs maneuvers, there are large Pitch and Roll motions. This research aims to control stability with Fuzzy. first process taking data followed by Fuzzification change input firm values into Fuzzy values. next stage Inference using rules (if – then) Deffuzification results inference output last s...

In modeling running gaits of biological and robotic quadrupeds, leg mass is often neglected. Analysis of the system angular momentum in a biological model and a robot model indicates that including leg mass is significant in capturing the roll motion in trotting and pacing. Leg mass has a more significant effect on the pitch motion in bounding and is most critical in accurately capturing the dy...

The robustness of agility metrics has been studied to determine the sensitivity of selected metrics to variations in initial conditions and uncertainties in physical characteristics and coefŽ cients. The selected metrics are time to roll through bank anglemetric, time-averaged integral of pitch rate metric, and power onset/loss parameter. Each metric was evaluated with initial condition errors ...

This paper addresses the development of a lightweight autonomous quadrotor that uses cameras and an inexpensive IMU as its only sensors and onboard processors for estimation and control. We describe a fully-functional, integrated system with a focus on robust visual-inertial state estimation, and demonstrate the quadrotor’s ability to autonomously travel at speeds up to 4 m/s and roll and pitch...