Abstract: An electric power steering device includes an electric motor driven by electric power from a power supply and configured to apply an assisting force to a steering shaft, a booster circuit connected to the power supply and configured to supply a boosting voltage to the electric motor, and a control device configured to manage at least one of a boosting duration time that is a continuous operation time of the booster circuit and a boosting prohibition time that is a continuous stoppage time of the booster circuit on the basis of a boosted electric power value during an operation of the booster circuit.

Abstract: An electric power steering device includes an electric motor driven by electric power from a power supply and configured to apply an assisting force to a steering shaft, a booster circuit connected to the power supply and configured to supply a boosting voltage to the electric motor, and a control device configured to manage at least one of a boosting duration time that is a continuous operation time of the booster circuit and a boosting prohibition time that is a continuous stoppage time of the booster circuit on the basis of a boosted electric power value during an operation of the booster circuit.

Abstract: An electric power steering device includes an electric motor driven by electric power from a power supply and configured to apply an assisting force to a steering shaft, a booster circuit connected to the power supply and configured to supply a boosting voltage to the electric motor, and a boosting control unit configured to determine a starting condition under which the start of boosting of the booster circuit is controlled on the basis of an angular acceleration of the electric motor, and start the boosting of the booster circuit when the determined starting condition is satisfied.

Abstract: User equipment includes a cell search unit configured to execute a cell search; a detector configured to detect that reconnection is required; a storage unit configured to store VoIP support information that indicates, for each type of radio communications system (RAT), whether voice packet communication is allowed; a cell search target determination unit configured to refer to the VoIP support information and report only the type of the radio communications system (RAT) for which the voice packet communication is allowed to the cell search unit as a target of the cell search, when the detector detects that the reconnection is required for the voice packet communication; and a communication unit configured to communicate in a cell that is detected by the cell search.

Abstract: The present invention shortens an out-of-service duration while suppressing an increase of power consumption. A mobile communication terminal UE of the present invention includes a control unit 11 configured to, when the mobile communication terminal UE fails, consecutively a predetermined number of times, to transmit a. “RRC Connection Request” for a camping-on cell #A, add the cell #A to a rejection cell list and perform cell search. In the cell search, the control unit 11 excludes the cell #A included in the rejection cell list from cells of selection targets.

Abstract: User equipment includes a cell search unit configured to execute a cell search; a detector configured to detect that reconnection is required; a storage unit configured to store VoIP support information that indicates, for each type of radio communications system (RAT), whether voice packet communication is allowed; a cell search target determination unit configured to refer to the VoIP support information and report only the type of the radio communications system (RAT) for which the voice packet communication is allowed to the cell search unit as a target of the cell search, when the detector detects that the reconnection is required for the voice packet communication; and a communication unit configured to communicate in a cell that is detected by the cell search.

Abstract: A mobile station includes a cell search unit that performs a cell search for a first mobile communication system or a second mobile communication system; a storing unit that stores a predetermined correspondence relationship between the mobile communication systems and moving speeds of the mobile station, wherein the cell search is to be performed for the communication systems; and a moving speed detector that detects a current moving speed of the mobile station, wherein, when a reconnection is required prior to completing a handover from the first mobile communication system to the second mobile communication system, the cell search unit performs the cell search for the mobile communication system corresponding to the current moving speed in the correspondence relationship.