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Design of a laboratory scale wave energy converter (WEC) system based on planar double-sided permanent magnet linear generator (PMLG) is considered in this paper. The detail procedure in designing the PMLG is reported including analytical work and experimental testing. The main objective is to create a simple and easy procedure in the design and optimize the detailed parameters to achieve the aimed...
The development and the test of a palm size finless torpedo shaped micro autonomous underwater vehicle (AUV) named Lancelet are presented. The vehicle has a diameter of 60 mm and only weighs 570 g. It has no appendages such as rudders, elevators, external propellers or other unprotected moving surfaces, which might increase the drag of the vehicle and interfere with the underwater obstacles. A novel...
Gait analysis aims to study human motion and its potential association with chronic diseases, such as Parkinson's disease and hemiplegic paralysis, by extracting various gait characteristics. It has been a challenging problem to accurately extract temporal and spatial gait parameter and to explore the relationship between gait signal and a disease of interest. In this study, we introduce a gait sensing...
3-dimensional touch sensing and long battery lifetime are two desired attributes in interactive displays. By employing piezoelectric material and rectifier circuitry related technique, force touch induced charges are used for both force strength detection and energy harvesting, achieving 3dimensional touch sensing and extended battery lifetime at the same time for interactive displays.
This paper proposes a sensorless chatter detection method for a ball screw drive system used in milling, by introducing the mechanical energy factor (MEF). The MEF is an indicator for detecting self-excited chatter, based on the power factor theory used in electric systems, and monitors the phase difference between dynamic cutting force and displacement. By monitoring the MEF, the self-excited chatter...
Colonoscopy is widely used in the diagnosis and treatment of colorectal diseases due to its minimal invasiveness, convenience and efficiency. However, it has two problems: bowel perforation and looping. In order to overcome these problems, it is necessary to get the information of the force and posture of the distal end of the colonoscope in the colonoscopy procedure. Elsewhere, we have reported an...
Force Myography (FMG) is a method of tracking functional motor activity using volumetric changes associated with muscle function. With comparable accuracy and multiple advantages over traditional methods of functional motor activity tracking, FMG has shown a promising potential in terms of applications in human-machine interfaces, tele-operation and healthcare devices. This paper provides a study...
Hair cells are thought to be passive transduction systems able to convert a mechanical pulse in an electrical signal. In this paper, we have investigated the polyelectrolyte properties of actin filaments which in interaction with myosin motor proteins represent basic participants in mechano-electrical transduction in the stereocilia, mechanosensing organelles of hair cells. We have elaborated a biophysical...
The tonic postural system guarantees the stability of the human body in upright stance and during locomotion. It is considered as a complex organization which involves several internal systems and has multiple sources of information. In this paper, we provide a review of techniques and materials for human stability assessment. The primary tools to record and evaluate human sways in static posture...
Vehicle accidents are one of the most leading causes of fatality. The time between an accident occurrence and the emergency medical personnel are dispatched to the location of accident is the critical factor in the survival rate after an accident. By minimizing the gap time, mortality rate can be reduced. One approach to reduce the delay time is to use the Real Time Wireless Accident Tracker Using...
Predicting hand gestures and finger movements include a wide range of applications in different fields such as human computer interaction, rehabilitation, and prosthesis control. Research in this area, mainly focuses on hand gesture classification which limits the ability of the system to a set of predefined gestures and also limits the ability to control fine finger movements. Force Myography (FMG)...
In this paper, we report on the design of a portable set of starting blocks for personal training to provide immediate feedback on the quality of sprinters' starting performance. The prototype set features two portable starting blocks with embedded sensors and a microcontroller for data collection and analysis. Testing was conducted with sprinters to validate and gauge the overall functionality of...
This paper discusses collaboration of autonomous unmanned systems in the presence of cyber-physical attacks, inspired by Quantum Entanglement (Qe). QE describes a quantum state of correlated pairs or groups of particles as a whole while interacting, even for the particles separated by a large distance. The QE is a physical phenomenon at the molecular level and below, and the effects of QE would quickly...
A fault can occur any time during mobile robots operation and this may cause human injuries. To ensure the safety and the reliability of mobile robots, fault detection and identification (FDI) are necessary to be addressed. The faults in this study are defined as situations that the mobile robots collide with obstacles or the obstacle interferes mobile robot motion immediately. The objectives of this...
The buffing process used in the repair polishing of an automotive body surface is carried out manually using skilled workers based on their own experience. However, the number of skilled workers available in the workforce is decreasing owing to the aging population. In addition, the surface quality after the buffing process has been applied is dependent on the proficiency level of the polishing worker...
Force Sensing Resistors (FSRs) are low-cost alternatives to load cells for pressure and force sensing. Nonetheless, FSRs exhibit a comparative lower repeatability due to their large hysteresis and creep response. The FSRs operate on the basis of the piezoresistive effect, but they have proven to exhibit a piezocapacitive effect too. A test bench has been arranged to enable both: conductance (the inverse...
The aim of this project is to develop a novel device, using a micro force sensing array, which can be used to study forces involved in cell migration and the cellular responses to drugs that may inhibit migration or induce differentiation. The system was modelled with an optimum geometry of 1 pm diameter and 10 pm length for forces down to 1 nanometre. Devices were fabricated using conventional photolithography...
This article investigates a mobile control problem for a class of stochastic distributed parameter systems with moving boundaries by using mobile sensor-actuator networks(MSANs). The network induced randomly missing measurements among the sensors are introduced for their universal existence in sensor networks. The collocated sensor-actuator networks which can travel throughout the spatial domain are...
Intelligent Wheelchair Bed (IWB) is an important direction. And it is also one of the most active research direction in the robot field. In this work, the obstacle avoidance algorithm based on the Artificial Potential Field (APF) using ultrasonic sensors is proposed and realized in order to achieve the real-time and continuing obstacle avoidance for the IWB. The IWB can keep on detecting the environment...
We report a unique MEMS resonant force sensor design that provides both reduced motional resistance and greatly enhanced strain gauge factor to target operation under ambient conditions. The proposed device has been realized in an Aluminum Nitride (AlN) on Silicon (Si) process, where the piezoelectric-AlN transducers are uniquely decoupled from a force sensitive triple beam tuning fork (TBTF) resonator...
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