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  • MOVING MAGNET TYPE LINEAR MOTOR
    Publication number: 20110221282
    Abstract: The moving magnet type linear motor according to the present invention comprises a stator comprising a plurality of coils arranged in a single direction and having a both ends support structure supporting both ends of the stator in a direction perpendicular to said single direction, a pair of movers comprising a plurality of permanent magnets arranged opposing the sides of the stator respectively and capable of relative movement in said single direction with respect to each other, and guidance mechanisms guiding both the movers independently and movably in said single direction, and one of the movers is connected to a load.
    Type: Application
    Filed: December 18, 2008
    Publication date: September 15, 2011
    Applicants: SABANCI UNIVERSITY, FUJITEC CO., LTD.
    Inventors: Sandor Markon, Ender Kazan, Ahmet Onat
  • Position detector for moving magnet type linear motor
    Patent number: 8742702
    Abstract: In a moving magnet type linear motor including a stator with a plurality of coils placed in one direction and a mover with a permanent magnet opposed to the stator, a position detector detects the position of the mover. The position detector includes a magnetic body fixed to the mover. One or two or more coils are selected and a voltage is applied to the selected coil while a current or a voltage induced in a coil adjacent to the selected coil is measured, and the position of the magnetic body that changes in response to the position of the mover is determined based on the measured current or the measured voltage.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: June 3, 2014
    Assignees: Sabanci University, Fujitec Co., Ltd.
    Inventors: Sandor Markon, Ahmet Onat
  • Moving magnet type linear motor
    Patent number: 8502421
    Abstract: The moving magnet type linear motor according to the present invention comprises a stator comprising a plurality of coils arranged in a single direction and having a both ends support structure supporting both ends of the stator in a direction perpendicular to said single direction, a pair of movers comprising a plurality of permanent magnets arranged opposing the sides of the stator respectively and capable of relative movement in said single direction with respect to each other, and guidance mechanisms guiding both the movers independently and movably in said single direction, and one of the movers is connected to a load.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: August 6, 2013
    Assignees: Sabanci University, Fujitec Co., Ltd.
    Inventors: Sandor Markon, Ender Kazan, Ahmet Onat
  • REFLECTOR ARRAY OPTICAL DEVICE AND DISPLAY DEVICE USING THE SAME
    Publication number: 20120300310
    Abstract: A reflector array optical device includes two dihedral corner reflector array optical elements each having a substrate and a plurality of prism bodies arranged regularly on and each protruding from one main surface of the substrate. Each prism body includes at least two sides of orthogonal planes. The two optical elements are adhered so that top faces of the prism bodies are directly confronted respectively so as to make two coplanar planes in which the two orthogonal planes exist respectively.
    Type: Application
    Filed: May 25, 2012
    Publication date: November 29, 2012
    Inventors: Satoshi Maekawa, Markon Sandor, Takashi Sugiyama
  • NONLINEAR AND EFFICIENT EDDY-CURRENT OVERSPEED PROTECTION SYSTEM FOR ELEVATORS
    Publication number: 20210139278
    Abstract: An overspeed emergency brake system includes an overspeed detector magnet generating a brake actuation force and a kinematic constraint element guiding the movement of the magnet. The magnet and a kinematic constraint element in the brake system are arranged such that a linear brake actuation force is generated at a normal operating speed condition (i.e in a first position of the magnet with respect to the kinematic constraint element), due to the movement of the kinematic constraint element when guiding the magnet along a reaction surface and the kinematic constraint element converts the linear speed-force relationship into a nonlinear speed-force relationship in an overspeed condition (i.e a second position), while the magnet translates with respect to the kinematic constraint element generating a sharply increasing force for triggering the overspeed emergency brake.
    Type: Application
    Filed: March 8, 2017
    Publication date: May 13, 2021
    Applicant: SABANCI UNIVERSITESI
    Inventors: Ahmet ONAT, Sandor MARKON
  • Elevator group supervisory control system
    Patent number: 5767461
    Abstract: An elevator group supervisory control system for selecting the most suitable car among a plurality of elevators, when a hall call is made, to assign to the hall call, comprising: temporary assigning means for temporarily assigning the car by a conventional method such as a fuzzy group supervisory control based on group data representing states of the elevator system at the moment when a new hall call is made; and a neural net for receiving numerical values converted from group data including the result of judgment of the temporary assigning means and outputting an assignment fitness of each elevator. It decides the most suitable elevator from the output pattern of the neural net to assign to the hall call.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: June 16, 1998
    Assignee: Fujitec Co., Ltd.
    Inventors: Masami Nakagawa, Kenji Sasaki, Sandor Markon, Ichiro Nagashima, Takeshi Midoritani, Tomoaki Tanabe, Naoki Ohta
  • Nonlinear and efficient eddy-current overspeed protection system for elevators
    Patent number: 11407614
    Abstract: An overspeed emergency brake system includes an overspeed detector magnet generating a brake actuation force and a kinematic constraint element guiding the movement of the magnet. The magnet and a kinematic constraint element in the brake system are arranged such that a linear brake actuation force is generated at a normal operating speed condition (i.e in a first position of the magnet with respect to the kinematic constraint element), due to the movement of the kinematic constraint element when guiding the magnet along a reaction surface and the kinematic constraint element converts the linear speed-force relationship into a nonlinear speed-force relationship in an overspeed condition (i.e a second position), while the magnet translates with respect to the kinematic constraint element generating a sharply increasing force for triggering the overspeed emergency brake.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: August 9, 2022
    Assignee: SABANCI UNIVERSITESI
    Inventors: Ahmet Onat, Sandor Markon
  • Reflector array optical device and display device using the same
    Patent number: 8638511
    Abstract: A reflector array optical device includes two dihedral corner reflector array optical elements each having a substrate and a plurality of prism bodies arranged regularly on and each protruding from one main surface of the substrate. Each prism body includes at least two sides of orthogonal planes. The two optical elements are adhered so that top faces of the prism bodies are directly confronted respectively so as to make two coplanar planes in which the two orthogonal planes exist respectively.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: January 28, 2014
    Assignees: National Institute of Information and Communications Technology, Stanley Electric Co., Ltd.
    Inventors: Satoshi Maekawa, Markon Sandor, Takashi Sugiyama
  • POSITION DETECTOR FOR MOVING MAGNET TYPE LINEAR MOTOR
    Publication number: 20120091928
    Abstract: The present invention provides a position detector which can detect the position of a mover on the side of a stator, and which realizes detection with high accuracy in a moving magnet type linear motor. In a moving magnet type linear motor including: a stator 2 with a plurality of coils placed in one direction; and a mover 3 with a permanent magnet so placed as to be opposed to the stator 2, a position detector according to one embodiment of the present invention detects the position of the mover 3. The position detector includes a magnetic body 5 fixed to the mover 3. One or two or more coils are selected and a voltage is applied to the selected coil while a current or a voltage induced in a coil adjacent to the selected coil is measured, and the position of the magnetic body 5 that changes in response to the position of the mover 3 is determined based on the measured current or the measured voltage.
    Type: Application
    Filed: December 25, 2009
    Publication date: April 19, 2012
    Applicants: FUJITEC CO., LTD., SABANCI UNIVERSITY
    Inventors: Sandor Markon, Ahmet Onat
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