Cableless Magnetic Actuator Capable of High-Speed Movement in Pipe by New Type Propulsion Module

2012 ◽  
Vol 452-453 ◽  
pp. 1252-1256 ◽  
Author(s):  
Tomohiro Izumikawa ◽  
Hiroyuki Yaguchi
Keyword(s):  
High Speed ◽  
Resonance Energy ◽  
Magnetic Actuator ◽  
System A ◽  
New Type ◽  
Spring System ◽  
Inspection And Maintenance ◽  
Mass Spring ◽  
Button Batteries ◽  
Very High

The present paper proposes a novel cableless magnetic actuator that exhibits a very high thrusting force and is capable of high speed locomotion in a thin pipe by using new type propulsion module. The magnetic actuator is moved according to the vibration amplitude and elastic energy of a mass-spring system due to mechanical resonance energy. The proposed actuator contains an electrical inverter that directly transforms DC from button batteries into AC. The electrical DC-AC inverter incorporates a mass-spring system, a reed switch and a curved permanent magnet that switches under an electromagnetic force. Experimental results indicate that the proposed actuator is able to move upward at a speed of 51 mm/s by the power provided by 8 button batteries when pulling a 10 g load mass. This cableless magnetic actuator has several possible applications, including small pipe inspection and maintenance.

scholarly journals Cableless In-piping Magnetic Actuator for Transportation over Long-range

2015 ◽  
Vol 5 (2) ◽  
pp. 37
Author(s):  
Tomohiro Izumikawa ◽  
Ryuichi Watanabe ◽  
Hiroyuki Yaguchi
Keyword(s):  
Long Range ◽  
Electromagnetic Force ◽  
Permanent Magnets ◽  
Resonance Energy ◽  
Experimental Result ◽  
Magnetic Actuator ◽  
New Type ◽  
Spring System ◽  
Inner Diameter ◽  
Mass Spring

<p class="1Body">This paper proposes a cableless In-piping magnetic actuator capable of locomotion over long range of 1,000 m within a pipe having an inner diameter of 10 mm. The cableless magnetic actuator is moved by using resonance energy of a mass-spring system excited by using an electromagnetic force. The proposed actuator incorporates a new type of an electrical inverter that directly transforms DC from button batteries into AC. The electrical DC-AC inverter incorporates a mass-spring system, two reed switches and two curved permanent magnets that switch under an electromagnetic force. The conventional DC-AC inverter and the newly proposed inverter were compared, and the effect of the inverter on the motive properties of the cableless magnetic actuator was examined. The influence of the consumption current of the battery on the range of the actuator was examined. Experimental result demonstrates that the cableless magnetic actuator was able to move horizontally at 1,588 m, and horizontal speed at 176.5 mm/s when two reed switches were used.</p>

scholarly journals A New Type of Magnetic Actuator Capable of Wall-Climbing Movement Using Inertia Force

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
H. Yaguchi ◽  
S. Sakuma ◽  
T. Kato
Keyword(s):  
Permanent Magnets ◽  
Resonance Energy ◽  
Experimental Result ◽  
Inertia Force ◽  
Magnetic Actuator ◽  
Function Generator ◽  
Mass Spring Model ◽  
New Type ◽  
The Difference ◽  
Mass Spring

This paper proposes a new type of a magnetic actuator that operates on a resonance energy of a mass-spring model by using an electromagnetic force. The magnetic actuator is moved by the difference in an inertia force during one period of vibration. Experimental result demonstrates that a horizontal speed of the magnetic actuator was 7.4 mm/s with load mass of 50 g. We considered a method of a cable-free movement of the actuator by using two iron rails and four permanent magnets. The magnetic actuator is able to move stably a ceiling plane and a wall plane. This actuator is able to move on the plane of the magnetic materials only a function generator and a power amplifier.

A New Design Based on Common Structures for Indoor Computer Wireless Communication System

2012 ◽  
Vol 452-453 ◽  
pp. 1240-1245
Author(s):  
Qi Liu
Keyword(s):  
Wireless Communication ◽  
Communication System ◽  
High Speed ◽  
Fresnel Lens ◽  
System Structure ◽  
Lens System ◽  
Wireless Communication System ◽  
Analogue Simulation ◽  
System A ◽  
New Type

From several basic structures for indoor computer wireless communication system, a new type of system structure was designed. Its conformation of optics system and achievement by module were described particularly through using Fresnel lens system. This system’s link could be transformed between directed LOS link and non-directed LOS link, which made the system communicate at a high-speed when there were no barriers between the emitter and receiver and keep a good convexity when barriers appeared. At last what should be noted for the analogue simulation was brought up.

An Effective Method for Modeling Stiction in Multibody Dynamic Systems

1996 ◽  
Vol 118 (1) ◽  
pp. 172-176 ◽  
Author(s):  
R. G. Synnestvedt
Keyword(s):  
Complex Systems ◽  
Dynamic Systems ◽  
Degrees Of Freedom ◽  
Dynamic Equations ◽  
Stick Slip ◽  
System A ◽  
Multibody Dynamic ◽  
Model Dynamics ◽  
Spring System ◽  
Mass Spring

This paper presents an effective method for developing dynamic equations which realistically model dynamics of multibody mechanical systems with stiction, or stick-slip friction. This method is used in three examples—a mass-spring system, a top, and a robot linkage—to illustrate the facility with which the method is implemented. The method dynamically partitions sets of dynamic equations to model a system through discontinuities, changes in degrees of freedom and changes in states. Comparisons of this method with others is presented for simple and complex systems.

The Study on the Framework of Wireless Network System

2010 ◽  
Vol 20-23 ◽  
pp. 814-819
Author(s):  
Xue Qing Ji
Keyword(s):  
Wireless Network ◽  
High Speed ◽  
Fresnel Lens ◽  
Network System ◽  
Lens System ◽  
System Framework ◽  
Analogue Simulation ◽  
System A ◽  
New Type

From several basic frameworks wireless network system, a new type of system framework was designed. Its conformation of optics system and achievement by module were described particularly through using Fresnel lens system. This system’s link could be transformed between directed LOS link and non-directed LOS link, which made the system communicate at a high-speed when there were no barriers between the emitter and receiver and keep a good convexity when barriers appeared. At last what should be noted for the analogue simulation was brought up.

An Analytical Design Methodology for High Speed Nanopositioning Scanners

2015 ◽  
Author(s):  
Vaibhav Sabade ◽  
Tim John Joseph ◽  
V. Kartik
Keyword(s):  
High Speed ◽  
Cross Coupling ◽  
Test System ◽  
Systematic Design ◽  
Analytical Methodology ◽  
One Dimensional ◽  
Parametric Studies ◽  
Spring System ◽  
Manufacturing Tolerances ◽  
Mass Spring

An analytical methodology is presented for the systematic design of a serial kinematic flexure-guided high speed nanopositioning scanner. Approximate relations for the first natural frequency in different directions, achievable range, and in-plane cross-coupling between the axes are obtained considering each stage as a simple one-dimensional mass spring system. Parametric studies are performed to compare these characteristics for a particular range of flexure dimensions. The robustness of the design to manufacturing tolerances, and especially their influence on cross-coupling is investigated. The relations obtained are experimentally verified on a single-axis test system and the measured natural frequencies closely match analytical and FEA predictions. A two-axis nanopositioning system is designed, which has the fast and slow scanning axes’ resonances at 26.36 kHz and 5.28 kHz. The design is validated using finite elements, and the predicted actuation-direction resonances (25.5 kHz and 5.24 kHz respectively) closely agree with those found analytically.

scholarly journals A New Type of Rotary Magnetic Actuator System Using Electromagnetic Vibration and Wheel

Actuators ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 51
Author(s):  
Hiroyuki Yaguchi ◽  
Izuru Kimura ◽  
Shun Sakuma
Keyword(s):  
Traffic Volume ◽  
Experimental Results ◽  
Social Infrastructure ◽  
Magnetic Actuator ◽  
Large Structures ◽  
Electromagnetic Vibration ◽  
New Type ◽  
Actuator System ◽  
Inspection And Maintenance ◽  
Pulling Force

In recent years, large structures, such as bridges, which are a type of social infrastructure, have been constructed with increasing traffic volume. For this reason, inspection and maintenance of social infrastructures, such as large bridges and tanks, is important. In the present paper, a magnetic wheel actuator system capable of movement using a new principle of locomotion was proposed and tested. The experimental results indicated a maximum pulling force of 1.6 N. By on-off control of the attractive force of the magnetic wheel, the actuator system was demonstrated to be able to move on a step having a height of 10 mm. Furthermore, the proposed actuator system could freely rotate in horizontal and vertical planes of over angles of 360°.

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