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The paper proposes both a behavioral model of the electromagnetic actuator and experimental results. An electromagnetic actuator structure is a system composed from coils and permanent magnets is presented. The electromagnetic actuators are used as: themselves for producing mechanical displacement and/or force generation, driving element for hydraulic distributors and other applications. It is proposed...
This paper investigates and realizes the self-sensing capability of shape memory alloy (SMA) actuators. SMA exhibits large stroke, high energy density, and requires low driving voltage. To make SMA more applicable to small scale robotic manipulations, its motion control using accurate self-sensing is necessary. The presented technique builds a self-sensing model by measuring the SMA electrical resistance...
A spool type fuel control valve is developed in this paper to control the flow rate of high temperature fuel supply for ramjet engines. The mathematical model of the flow rate control valve is given and the simulation is done using Matlab software. The proportional characteristic curve, flow rate-pressure drop characteristic curve and step response characteristic curve are obtained under different...
This paper reports on a thermal-based device for measuring water content in human skin. The device consists of resistive temperature detectors (RTD) and a pressure sensor. The RTD was also used as a heat source, and the pressure sensor was used to obtain constant thermal contact. Water content was measured by heat extraction rate across device interface under constant contact pressure. The device...
In order to improve the accuracy of control and response time in force-controlled systems, force sensorpsilas dynamic characteristics must be tested to gain dynamic parameters. Based on force sensorpsilas mathematical model, the step response of force sensor was simulated by Matlab software. After analyzing unreal dynamic parameters of the previous test method, a new method of testing force sensorpsilas...
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