摘要:
Disclosed is an interior permanent magnet type brushless direct current (BLDG) motor including a stator having a plurality of slots wound in a distributed winding manner, and a rotor positioned in the stator, configured to rotate with respect to the stator, and having a rotor core, a plurality of permanent magnets inserted in the rotor core and a plurality of flux barriers, wherein a flux barrier angle of the rotor is determined by multiples of twenty as an electrical angle and the multiples of twenty relates to a number of slots of the stator.
摘要:
An interior permanent magnet type brushless direct current (BLDC) motor includes a stator having a plurality of slots. The BLDC motor also includes a rotor positioned in the stator and that is rotatable with respect to the stator. The rotor has a rotor core, a plurality of permanent magnets inserted in the rotor core, a plurality of vent holes positioned between the center of the rotor core and the permanent magnets, and a plurality of coupling holes positioned between the permanent magnets and a periphery of the rotor core.
摘要:
Embodiments of the invention include features in the semiconductor memory device that are configured to receive command signals from a memory controller and selectively output at least a portion of the received command signals back to the memory controller for verification. Embodiments of the invention also provide methods for verifying the proper communication of command signals from a memory controller to a semiconductor memory device. Embodiments of the invention also provide systems and methods for testing memory cells in a semiconductor memory device.
摘要:
A motor includes a stator which generates a rotating magnetic field, and a rotor. The rotor includes a plurality of permanent magnets and a hysteresis band disposed on an outer periphery of the rotor.
摘要:
A server for providing a traffic image to a user device includes a location information receiving unit which receives information relating to a respective location of each of a plurality of vehicles, a location management unit which receives information relating to a particular area from a user device, and which detects at least one vehicle located within the particular area based on the location information, an information sending unit which sends information relating to the at least one detected vehicle to the user device, an image requesting unit which receives information relating to a vehicle selected from among the at least one detected vehicle from the user device, and which requests, from a device installed in the selected vehicle, transmission of a traffic image of the selected vehicle, and an image providing unit which receives the image and which provides the traffic image to the user device.
摘要:
A Global Positioning System (GPS) antenna apparatus in a wireless communication device is provided. The GPS antenna apparatus includes a GPS antenna radiator and at least one blocking layer. The GPS antenna radiator receives a GPS signal. The at least one blocking layer is installed proximate to the GPS antenna radiator so as to block an external noise introduced to the GPS antenna radiator.
摘要:
A system for virtual stock trading on the networks comprises a main database (DB) including a user DB and a stock price DB; a stock price provision server for receiving information on real-time stock prices from the stock market on the networks and transmitting the information on real-time stock prices to the main DB; a stock order server receiving information on the orders; and a stock trading server for receiving the information on the stock prices from the stock price provision server, determining whether to execute the transaction of the stocks by using the information on the orders received from the stock order server and providing the information on the transaction of the stocks to the main DB.
摘要:
A magnetizing motor having a permanent magnet body covering an outer circumferential surface of a rotor body, includes a speed detecting unit that detects a speed of the magnetizing motor; and a controlling unit that compares the speed detected by the speed detecting unit with a reference speed, and outputs a magnetizing control signal based on the result of the comparison.