MEMS deformable mirrors with thousands of actuators are under development for space-based operation, which require fault tolerant actuators that will not fail due to electrical overstress. We report on advances made in the development of MEMS deformable mirror actuators with enhanced reliability for space-based, high-contrast imaging instrumentation that eliminate irreversible actuator damage r...

Smart actuators have many potential applications in various areas, so the development of novel actuation materials, with facile fabricating methods and excellent performances, are still urgent needs. In this work, a novel electromechanical bimorph actuator constituted by a graphene layer and a PVDF layer, is fabricated through a simple yet versatile solution approach. The bimorph actuator can d...

Distributed consensus observer-based H∞ control for linear systems with sensor and actuator networks Hong-Du Wang & Huai-Ning Wu a Science and Technology on Aircraft Control Laboratory, School of Automation Science and Electrical Engineering, Beihang University (Beijing University of Aeronautics and Astronautics), Beijing 100191, China Accepted author version posted online: 31 Oct 2014.Publishe...

The aim of almost any electromagnetic actuator development is to increase the force with which an acts on a plunger as fast time response possible while maintaining dimensions small possible. This paper presents research impact lower core angle and DC solenoid actuator. method based analytical analysis magnetic path comparison numerical simulation results. A transient was performed 2D axial-sym...

MF Rahmat, S Md Rozali, N Abdul Wahab and Zulfatman Faculty of Electrical Engineering, Universiti Teknologi Malaysia, UTM Skudai 81310, Johor,Malaysia; E-mail : [email protected],[email protected], [email protected] Faculty of Electrical Engineering, Universiti Technical Malaysia Melaka, 76109 Durian Tunggal, Melaka,Malaysia; E-mail : [email protected] Abstract Draw-wire sensor is classified a...

The actuator, which generally consists of motors, electrical regulations, and propellers, is the key component quadrotor Unmanned Aerial Vehicle. During operation UAV, actuators are prone to degrade performance even cause serious failure, affects service quality flight safety Vehicles. Therefore, timely accurate monitoring evaluation health condition great significance ensure mission reliabilit...

The paper presents the preliminary results of experimental investigation four various loudspeakers used for driving synthetic jet actuator. parameters, characteristic velocity, pressure inside cavity, device sound level (SPL), and heat sink thermal resistance, were presented input power frequency. resonance frequency was determined based on electrical impedance. highest momentum velocity achiev...

Japanese space agencies are planning SELENE mission series, that will launch an orbiter and a lander mission to the moon in the next decade. One of candidates in SELENE 2 missions is a rover mission. A manipulator has strong possibility to be one of equipments mounted on a rover, though. It is to be a periscope and a sampling tool, and can operate other scientific equipments. In this paper, we ...

This paper presents the development of a piezoelectric artificial cochlea (PAC) device capable of analyzing vibratory signal inputs and converting them into electrical signal outputs without an external power source by mimicking the function of human cochlea within an audible frequency range. The PAC consists of an artificial basilar membrane (ABM) part and an implantable packaged part. The pac...

An active silencer to attenuate internal combustion engine exhaust noise is developed. The silencer consists of an electrically controlled valve connected to a buffer volume. The pulsating flow from the engine is buffered in the volume and the valve resistance is continuously controlled such that only the mean flow passes to the atmosphere. This flow is free of fluctuations and consequently fre...