摘要:
A commutator motor includes a stator and a rotor, and the stator includes a stator yoke and a field magnet. The field magnet is fixed onto the inner peripheral surface of the substantially cylindrical stator yoke. The stator yoke is configured by coaxially stacking a plurality of plate-like annular bodies, and the annular bodies are fixedly connected to each other by caulking at a caulking portion disposed on the annular body. In manufacture, the length of the stator yoke in the axial direction can be arbitrarily changed with the thickness of the annular body in the axial direction as a minimum unit. In case of manufacturing various stator yokes that are different in the axial length, the necessity of replacing a manufacturing machine is eliminated, thereby providing a commutator motor having the stator yoke which is low in the manufacturing costs.
摘要:
A commutator motor includes a stator and a rotor, and the stator includes a stator yoke and a field magnet. The field magnet is fixed onto the inner peripheral surface of the substantially cylindrical stator yoke. The stator yoke is configured by coaxially stacking a plurality of plate-like annular bodies, and the annular bodies are fixedly connected to each other by caulking at a caulking portion disposed on the annular body. In manufacture, the length of the stator yoke in the axial direction can be arbitrarily changed with the thickness of the annular body in the axial direction as a minimum unit. In case of manufacturing various stator yokes that are different in the axial length, the necessity of replacing a manufacturing machine is eliminated, thereby providing a commutator motor having the stator yoke which is low in the manufacturing costs.
摘要:
A commutator motor includes a stator and a rotor, and the stator includes a stator yoke and a field magnet. The field magnet is fixed onto the inner peripheral surface of the substantially cylindrical stator yoke. The stator yoke is configured by coaxially stacking a plurality of plate-like annular bodies, and the annular bodies are fixedly connected to each other by caulking at a caulking portion disposed on the annular body. In manufacture, the length of the stator yoke in the axial direction can be arbitrarily changed with the thickness of the annular body in the axial direction as a minimum unit. In case of manufacturing various stator yokes that are different in the axial length, the necessity of replacing a manufacturing machine is eliminated, thereby providing a commutator motor having the stator yoke which is low in the manufacturing costs.
摘要:
A mode determination section receives control signals from a quality IF section, a quality IF section, and a quality IF section, and determines whether a W-LAN communication section, a personal handy phone communication section, and an EV-DO communication section are each during communication or in the sleep mode based on the control signals. A request section requests the quality IF section, the quality IF section, and the quality IF section to output the radio quality information at predetermined intervals. A quality determination section receives control signals from the quality IF section, the quality IF section, and the quality IF section. Then, it determines one of the W-LAN communication section, the personal handy phone communication section, and the EV-DO communication section to be used for communication based on the radio quality information indicated by the control signals.
摘要:
An EV-DO terminal module is made up of hardware and software for implementing the function as an EV-DO terminal. A W-LAN terminal module is made up of hardware and software for implementing the function as an AP of W-LAN. An information exchange terminal module has a function equal to that of the W-LAN terminal module. A control module has a dialup function and a function based on PPP protocol and is a hardware and software module for controlling the EV-DO terminal module, the information exchange terminal module, and the W-LAN terminal module.
摘要:
A radio base station of a portable telephone system designed so as to establish a service area by transmission of radio waves so that radio communication is performed with a plurality of mobile stations existing in the service area, the radio base station comprising a plurality of antennas and control means for controlling transmission of a control data signal, which is to be time-divisionally transmitted at a predetermined interval, in a manner so as to transmit the control data signal by using the plurality of antennas into a plurality of directions in each of which a radiation beam of each antenna is made narrow to give directivity and in a condition that offset is given in transmission to the respective directions so as to transmit the control data signal into the directions in phases different from each other. Preferably, the offset for the respective directions is set to be N/m (msec.), where N (msec.) represents the predetermined interval and m represents the number of the plurality of directions.
摘要:
A communication terminal device and method operable to control a handover is disclosed. A connection is made to a first wireless communication network. If occurrence of a handover factor is detected, a search is made for a second wireless communication network based on a detection order, and handoff is made.
摘要:
A radio terminal 10 includes a radio communication unit 11 configured to receive packets at predetermined intervals through a first network 100 or a second network 200, a buffer 15 configured to temporarily store packets received by the radio communication unit 11, another radio communication unit 11 configured to transmit a preparation request for handover from the first network 100 to the second network 200, and an application processor 16 configured to reproduce the packets stored in the buffer 15 at a predetermined rate determined according to the predetermined interval. The application processor 16 stops the adaptive buffer control in response to the transmission of the handover preparation request.
摘要:
A radio terminal (10) includes an MIH user (14) configured to manage mobility from the first network to the second network; and an MIH function unit (13) configured to control a handover from the first network to the second network. The MIH user (14) notifies a link controller (12) via the MIH function unit (13) of a condition setting request including a first judgment logical formula being a condition to start an establishment of a radio link with the second network and a second judgment logical formula being a condition to execute a handover from the first network to the second network. The first judgment logical formula and the second judgment logical formula each indicate a combination of thresholds to be satisfied by a plurality of respective link is parameters in the radio link established with the first network.
摘要:
In a radio communication system employing HARQ scheme wherein the maximum number of slots is changed, a radio terminal (1) which calculates a predictive transmission rate being the predictive value of a downlink transmission rate at a future time after the receiving time of a downlink radio signal is provided with a storage unit (15A) which stores in association with a DRC a corrected transmission rate obtained by causing a defined transmission rate being a downlink transmission rate in the case of using all the maximum number of slots to reflect the probability of succeeding in decoding data using only some of the slots, and a calculation unit (142) which predicts the reception quality at the future time on the basis of the reception quality before the receiving time, obtains from the storage unit (15A) the corrected transmission rate associated with the DRC corresponding to the predicted reception quality, and calculates the predictive transmission rate from the obtained corrected transmission rate.