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This paper analyzes sheet transportation using the principle of electrostatic induction motors. This sheet transportation method has the capability of positioning and feeding dielectric sheets in processes and can be an interesting alternative to the existing mechanical conveyor. Although electrostatic sheet transportation was previously proposed based on a unique actuation model, it had limitations...
The aim of this study is to develop a compact and inexpensive driving system for a unique electrostatic film motor which is actuated by three-phase high voltages, the designed compact driving system contains a three-phase signal generator, a primary amplifier and a secondary amplifier. At first, the signal generator using direct digital synthesizer (DDS) is capable of easily generating high-frequency...
A novel capacitive linear encoder characterized by its untethered slider is presented. The main components are made of flexible printed circuit films measuring 0.2 mm in thickness that allows the sensor to be set up in thin interspaces or on curved surfaces. The sensor consists of a long receiver film and a short transmitter film, respectively containing four-phase and two-phase electrodes; the transmitter...
This paper describes a capacitive rotary position sensor that is characterized by its high compatibility with commercial resolvers. The main components are two electrode plates. Both parts are composed of simple circular or annular electrodes. The sensor is excited by two sinusoidal voltages, which are same as the excitation voltages of resolvers. These excitation voltages are applied to the stator...
In some environments, electromagnetic motors cannot be used because of the strong electromagnetic field they produce. Examples of such environments are inside magnetic resonance imaging (MRI) devices and inside vacuum chambers with presence of electron beams. In such cases, an electromagnetic motor can be replaced by a DEMED (dual excitation multiphase electrostatic drive), which is a high power linear...
This paper describes a capacitive linear encoder that is characterized by its un-tethered sensor slider. The main components are made of flexible printed circuit films measuring only 0.2 mm in thickness that allows the sensor to be set up in thin interspaces or on curved surfaces. The sensor consists of a long receiver film and a short transmitter film, respectively containing four-phase and two-phase...
Electrostatic adhesion is evaluated for robotic wall climbing. To realize electrostatic wall adhesion, flexible electrodes were fabricated using plastic film and conductive foil. The wall adhesion performances were measured for conductive and non-conductive surfaces. The measurement results for a conductive surface revealed that flexible electrodes can work as a suction cup, and that both air suction...
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