Topic
Electrostatic units
About: Electrostatic units is a research topic. Over the lifetime, 104 publications have been published within this topic receiving 1184 citations. The topic is also known as: electrostatic system & ESU system.
Papers published on a yearly basis
Papers
Patent•
5 Jan 1999TL;DR: In this paper, a wireless electrostatic charging and communicating system includes an electrostatic reader, a charger, and an energy storage device for being charged or communicated with in the electrostatic system.
Abstract: The wireless electrostatic charging and communicating system includes an electrostatic reader, an electrostatic charger and an electrostatic rechargeable device or electrostatic transceiver such as such as a smart card or radio frequency identification (RFID) card without requiring physical contact to electrodes. The electrostatic system is capacitance based and the charging and communicating occurs over capacitively coupled electrostatic electrodes or electrostatic electrodes. The electrostatic rechargeable device or transceiver includes a charge receiver and an energy storage means, for being charged or communicated with in the electrostatic system. The energy storage means may be any energy storage device including a rechargeable battery or capacitor. In a second embodiment, the electrostatic rechargeable device or transceiver includes an electrostatic charge receiver and an electromagnetic charge receiver with the energy storage means so that it may be alternatively charged or communicated with in an electrostatic system or an electromagnetic system for compatibility in either system.
171 citations
8 May 1994
TL;DR: By using a position feedback controller, the microgripper can be stabilized in theory, which is supported by computer simulations and preliminary data from fabricated micro-grippers supports the mathematical model for the open loop system, although the pull-in voltages are generally lower than predicted ones.
Abstract: A design of a high-force-output large-deflection parallel-plate electrostatically actuated microgripper is described. This design uses polysilicon as a structural material and may be fabricated using an IC-based surface machining process. This paper shows that by using a position feedback controller, the microgripper can be stabilized in theory, which is supported by computer simulations. Preliminary data from fabricated micro-grippers also supports the mathematical model for the open loop system, although the pull-in voltages (50 V to 100 V for gaps of 80 to 100 /spl mu/m/sup 2/) are generally lower than predicted ones, probably due to the inherent instability of the electrostatic system. Further experiments are in progress to evaluate the open-loop system and the closed-loop system. >
161 citations
TL;DR: In this paper, the authors generalize the study by Felici (Rev. Gen. 75 (1966) 1145) of the electric force on a conducting sphere near a plane electrode subject to an external electric field.
55 citations
Patent•
2 Oct 1969
TL;DR: In this paper, a greatly simplified and efficacious swing system, which produces mechanical vibratory movements, was presented. But the system dispenses with any active elements or components except for an energy or current source or cell, the energy losses produced by ohmic resistances in the system being reduced to a minimum and resulting in a high degree of efficiency, reliability and accurate performance.
Abstract: The present invention concerns means for generating periodical mechanical vibrations by means of electric energy, and deals with a greatly simplified and efficacious swing system, which produces mechanical vibratory movements, which system dispenses with any active elements or components except for an energy or current source or cell, the energy losses produced by ohmic resistances in the system being reduced to a minimum and resulting in a high degree of efficiency, reliability and accurate performance.
52 citations
TL;DR: In this paper, a conducting ball immersed in a poorly conducting liquid between two horizontal plates acquires a charge when subjected to a dc voltage, when the applied voltage is high enough for the electric force to overcome gravity, the ball rises, moves up through the liquid and falls down as its charge leaks away.
Abstract: A conducting ball immersed in a poorly conducting liquid between two horizontal plates acquires a charge when subjected to a dc voltage. When the applied voltage is high enough for the electric force to overcome gravity, the ball rises, moves up through the liquid and falls down as its charge leaks away. The threshold of voltage, as well as the time of flight between contacts, depends on the charge acquired by the ball during the contact with the electrode. Experiments have been done using liquids of different conductivities and it was shown that the conductivity does not affect the lift-off voltage. When the ball gets close to the electrode a discharge occurs and a current pulse is registered by the external circuit. The charge carried by the pulse is an order of magnitude smaller than the charge transferred to the ball from the electrode. We have made a detailed study, with different balls and liquids, of the charge transferred to the external circuit. The dependence on the different parameters of the ratio charge transferred to the circuit-charge acquired by the ball is explained using the coefficients of capacity of the electrostatic system.
43 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 3 |
| 2019 | 5 |
| 2018 | 5 |
| 2017 | 3 |
| 2016 | 3 |
| 2015 | 4 |