Analysis of Trans-Permanent Magnetic Systems

2003 ◽  
Vol 125 (1) ◽  
pp. 143-146 ◽  
Author(s):  
Larry Silverberg ◽  
Luis Duval
Keyword(s):  
Low Power ◽  
Dynamic Systems ◽  
Permanent Magnets ◽  
Magnetization Process ◽  
Governing Equations ◽  
Ultra Low Power ◽  
Magnetic Systems ◽  
Electromechanical Devices

This paper develops a method of switching the states of permanent magnets through an on-board magnetization process. The resulting dynamic systems are referred to as trans-permanent magnetic systems. This paper first describes the governing equations needed for the analysis of trans-permanent magnetic systems. Then, the paper demonstrates their feasibility in an experiment. In doing so, this paper presents a method that has the potential of leading to new ultra-low-power designs for electromechanical devices.

Transpermanent Magnetics Using Alternating Uniform Linear Stacks

2004 ◽  
Vol 127 (4) ◽  
pp. 679-687
Author(s):  
Larry Silverberg ◽  
Luis Duval
Keyword(s):  
Low Power ◽  
Permanent Magnets ◽  
Traditional Approach ◽  
Reducing Power ◽  
Ultra Low Power ◽  
Flow Rates ◽  
Recent Developments ◽  
Valve Control ◽  
Design And Testing ◽  
Laboratory Prototype

In this paper we apply recent developments in transpermanent magnetics to the problem of ultra-low-power valve control. Whereas the traditional approach to ultra-low-power valve control is based on latching mechanisms that turn off valves during inactive periods, in this paper we describe an approach that eliminates the need for latching mechanisms. Instead of latching mechanisms, the principles of transpermanent magnetics are employed to switch the states of permanent magnets; the use of permanent magnets instead of electromagnets eliminates power loads during inactive periods, thereby reducing power consumption to ultralow levels. The permanent magnets in a transpermanent magnet valve are configured in a stack. The relationships between the strength and number of permanent magnets in the stack and the stroke and resolution of the valve are developed. In this paper we show that the alternating uniform linear stack is well suited for digital process valves having a small number of states. Then in the paper we report on the design and testing of a laboratory prototype valve that uses an alternating uniform linear stack. The prototype valve had five states yielding a range of flow rates between 0 and 1.58m∕s with a resolution of 0.3m∕s. In this paper we find that transpermanent valves represent a promising valve technology for digital process valves.

An Ultra-low Power Consumption MAC Protocol Complied with IEEE 802.15.4/4e for Wireless Smart Utility Networks

2016 ◽  
Vol 136 (11) ◽  
pp. 1555-1566 ◽  
Author(s):  
Jun Fujiwara ◽  
Hiroshi Harada ◽  
Takuya Kawata ◽  
Kentaro Sakamoto ◽  
Sota Tsuchiya ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Ieee 802.15.4 ◽  
Mac Protocol ◽  
Low Power Consumption ◽  
Ultra Low Power

An Ultra Low Power and Variation Tolerant GEN2 RFID Tag Front-End with Novel Clock-Free Decoder

2010 ◽  
Vol E93-C (6) ◽  
pp. 785-795
Author(s):  
Sung-Jin KIM ◽  
Minchang CHO ◽  
SeongHwan CHO
Keyword(s):  
Low Power ◽  
Ultra Low Power ◽  
Rfid Tag ◽  
Front End

scholarly journals Ultra Low Power Consumption for Self-Oscillating Nanoelectromechanical Systems Constructed by Contacting Two Nanowires

Nano Letters ◽  
2013 ◽  
Vol 13 (4) ◽  
pp. 1451-1456 ◽  
Author(s):  
T. Barois ◽  
A. Ayari ◽  
P. Vincent ◽  
S. Perisanu ◽  
P. Poncharal ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Nanoelectromechanical Systems ◽  
Low Power Consumption ◽  
Ultra Low Power
Sign in / Sign up

Export Citation Format

Share Document