Keyword : high-speed camera


Investigation of Time Evolution of Length of Break Arcs Occurring in a 48VDC/50-300A Resistive Circuit
Kenshi HAMAMOTO Junya SEKIKAWA 
Publication:   
Publication Date: 2019/05/01
Vol. E102-C  No. 5 ; pp. 424-427
Type of Manuscript:  BRIEF PAPER
Category: Electromechanical Devices and Components
Keyword: 
electrical contactselectromagnetic relayhigh-speed cameraarc discharge
 Summary | Full Text:PDF(1.2MB)

Effect of Magnetic Blow-Out and Air Flow on Break Arcs Occurring between Silver Electrical Contacts with Copper Runners
Haruki MIYAGAWA Junya SEKIKAWA 
Publication:   
Publication Date: 2017/09/01
Vol. E100-C  No. 9 ; pp. 709-715
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices)
Category: 
Keyword: 
electrical contactselectromagnetic relayhigh-speed cameraarc spots
 Summary | Full Text:PDF(1.9MB)

Analysis of Rotational Motion of Break Arcs Rotated by Radial Magnetic Field in a 48VDC Resistive Circuit
Jun MATSUOKA Junya SEKIKAWA 
Publication:   
Publication Date: 2017/09/01
Vol. E100-C  No. 9 ; pp. 732-735
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
arc dischargecontact erosionhigh-speed camera
 Summary | Full Text:PDF(705.4KB)

Toward Large-Pixel Number High-Speed Imaging Exploiting Time and Space Sparsity
Naoki NOGAMI Akira HIRABAYASHI Takashi IJIRI Jeremy WHITE 
Publication:   
Publication Date: 2017/06/01
Vol. E100-A  No. 6 ; pp. 1279-1285
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
high-speed camerasparsitycompressed sensingimage completionconvex optimization
 Summary | Full Text:PDF(1.9MB)

Observation of Break Arc Rotated by Radial Magnetic Field in a 48VDC Resistive Circuit Using Two High-Speed Cameras
Jun MATSUOKA Junya SEKIKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/09/01
Vol. E99-C  No. 9 ; pp. 1027-1030
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
arc dischargecontact erosionhigh-speed camera
 Summary | Full Text:PDF(1MB)

Motion of Break Arcs Occurring between Silver Electrical Contacts with Copper Arc Runners
Haruki MIYAGAWA Junya SEKIKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/09/01
Vol. E98-C  No. 9 ; pp. 919-922
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
electrical contactselectromagnetic relayhigh-speed cameracontacts opening apparatus
 Summary | Full Text:PDF(2.1MB)

Real Time Spectroscopic Observation of Contact Surfaces Being Eroded by Break Arcs
Masato NAKAMURA Junya SEKIKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/06/01
Vol. E97-C  No. 6 ; pp. 592-598
Type of Manuscript:  PAPER
Category: Electromechanical Devices and Components
Keyword: 
break arccontact erosionelectrical contactshigh-speed camera48V
 Summary | Full Text:PDF(4.8MB)

Effects of Shapes of Contact Surfaces on Break Arcs Occurring between Electrical Contacts in Which a Magnet is Embedded
Naoya TAKESHITA Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/09/01
Vol. E95-C  No. 9 ; pp. 1522-1526
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices - Papers selected from International Session on Electro-Mechanical Devices 2011 (IS-EMD2011) and other recent research results -)
Category: 
Keyword: 
electrical contactsrelaycontact erosionpermanent magnethigh-speed camera
 Summary | Full Text:PDF(959.8KB)

Arc Duration of Break Arcs Magnetically Blown-Out in a DC 450 V Resistive Circuit
Hitoshi ONO Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/09/01
Vol. E95-C  No. 9 ; pp. 1515-1521
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices - Papers selected from International Session on Electro-Mechanical Devices 2011 (IS-EMD2011) and other recent research results -)
Category: 
Keyword: 
arc dischargepermanent magnetelectrical contacttransverse magnetic fieldhigh-speed camera
 Summary | Full Text:PDF(1.1MB)

Arc Duration and Rotational Frequency of Break Arcs Driven by Radial Magnet Field in a DC42 V Resistive Circuit
Naoya TAKESHITA Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/09/01
Vol. E94-C  No. 9 ; pp. 1388-1394
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices – Papers selected from International Session on Electro-Mechanical Devices (IS-EMD2010) and other research results –)
Category: 
Keyword: 
electrical contactsrelaycontact erosionpermanent magnethigh-speed camera
 Summary | Full Text:PDF(1.5MB)

Characteristics of Break Arcs Driven by Transverse Magnetic Field in a DC High-Voltage Resistive Circuit
Tomohiro ATSUMI Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/09/01
Vol. E93-C  No. 9 ; pp. 1393-1398
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (Selected Papers from IS-EMD2009))
Category: 
Keyword: 
break arcelectrical contactmagnethigh-speed camera
 Summary | Full Text:PDF(487.5KB)

Rotational Motion of Break Arcs Driven by Radial Magnetic Field in a DC Resistive Circuit
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/08/01
Vol. E92-C  No. 8 ; pp. 992-997
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (IS-EMD2008))
Category: Arc Discharge & Contact Phenomena
Keyword: 
break arcmagnetic drivehigh-speed cameraelectrical contacts
 Summary | Full Text:PDF(918.3KB)

Relationship between Arc Duration and Motion of Arc Spots for Break Arcs of Ag and Ag/ZnO Electrical Contacts
Junya SEKIKAWA Takumi SUGIO Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8 ; pp. 1249-1254
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargeelectrical contactbreak archigh-speed cameraAg/ZnO
 Summary | Full Text:PDF(459.4KB)

Motion of Break Arcs Driven by External Magnetic Field in a DC42 V Resistive Circuit
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8 ; pp. 1255-1260
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargebreak archigh-speed cameramagnetelectrical contact
 Summary | Full Text:PDF(425.1KB)

Optical Observation of Arc Discharges between Electrical Contacts Breaking at Low Speed in DC42 V Resistive Circuit
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/08/01
Vol. E89-C  No. 8 ; pp. 1147-1152
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from IS-EMD2005))
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargeelectrical contactbreaking archigh-speed cameracurrent density
 Summary | Full Text:PDF(865.1KB)

Cathode and Anode Bright-Spot Behaviors of Breaking Arc between Electrical Contacts with Low Separating Speed
Takayoshi ENDO Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8 ; pp. 1596-1602
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargebright spotelectrical contactbreaking archigh-speed camera
 Summary | Full Text:PDF(2.4MB)

Observations of the Eroded Surfaces and the Motion of Arc Spots at Each Breaking Operation of Silver Electrical Contacts
Junya SEKIKAWA Tetsuya KITAJIMA Takayoshi ENDO Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8 ; pp. 1590-1595
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargeelectrical contactbreaking archigh-speed cameramicroscope
 Summary | Full Text:PDF(1.7MB)

Observation of Breaking Arcs of Ag or Cu Electrical Contact Pairs with a High-Speed Camera
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/08/01
Vol. E87-C  No. 8 ; pp. 1342-1347
Type of Manuscript:  Special Section PAPER (Special Section on IS-EMD2003--Recent Technical Trend of Electro-Mechanical Devices)
Category: Arc Discharge
Keyword: 
arc dischargeelectrical contactbreaking archigh-speed camera
 Summary | Full Text:PDF(1.9MB)