Kabushiki Kaisha Toshiba

Masakuni Akashi

Mimpei Morishita

Toshihisa Nabetani

Ren Sakata

Masaaki Saito

Hiroyuki Kaneko

Shinsuke Watanabe

Noritaka Deguchi

Takashi Shigemasa

Masahiko Murai

Miyako Miyoshi

Mitsuaki Suzuki

Yumi Hanashima

Shuji Sato

Michio Kanayama

Noriko Kasahara

According to one embodiment, an electricity storage control device includes a setting unit, and a control unit. The setting unit sets, for each time zone, a target state of charge (SOC) of electric energy to be stored in an electricity storage device in the time zone. The control unit controls at least charging or discharging of the electricity storage device based on the set target SOC for each time zone, a SOC detected from the electricity storage device, and a voltage of a supply destination of electric power from the electricity storage device.

Electricity storage control device

According to one embodiment, a wireless terminal communicates with a server via wireless base stations. The wireless terminal has devices which transmit a signal in a normal-power transmission mode and the signal in a low-power transmission mode, a power control device which switches the normal-power transmission mode to the low-power transmission mode, or vice versa, and a device which transmits current position data to the server. The server detects the position of the wireless terminal, designates one of the base stations which is close to the wireless terminal, when the wireless terminal is set to the low-power transmission mod, and detects whether the base station designated has a problem or not according to detect the signal from the wireless terminal.

Wireless communication system and wireless communication apparatus, both for use in broadcast wireless transmission

An actuator controller using a periodic signal includes: an actuating unit for moving a movable portion with respect to a fixed portion by a predetermined amount; a drive unit for operation the movement; a power supply unit for supplying an electric power to the drive unit; and a periodic signal generating unit, which includes a velocity command signal generating part for generating a velocity command signal on the basis of an output of the movable portion, and a driving frequency calculating part for determining the frequency of the periodic signal in accordance with the velocity command signal. The driving frequency calculating part comprises: a digital control calculating part for deriving a control pulse signal frequency f for moving the movable portion; a stochastic output calculating part for calculating an output by a probability on the basis of the frequency f and a sampling frequency fs, or an error correcting part for correcting an error of the frequency; and a frequency quantizing part for quantizing the frequency, the error of which has been corrected. With this construction, it is possible to smoothly and accurately control the movable portion of the periodic signal drive system even if there is a little memory capacity, and it is possible to achieve a precise movement.

Actuator controller using periodic signal

A carrying apparatus having a carrier levitated by a magnetic force. The carrier is movably arranged on the track surface of a track path. A plurality of permanent magnets for generating along the track surface a magnetic field having a predetermined magnetic flux distribution pattern in a direction perpendicular to the extending direction of the track path are provided on the track path. A superconductor element is mounted in the carrier. The superconductor element traps (pins) the magnetic flux of the magnetic field which is applied during transition from the normal conducting state to the superconducting state. The superconductor element supplies a levitating force and a guide force acting in a direction perpendicular to the extending direction of the track path to the carrier by the magnetic force generated between the trapped magnetic flux and the magnetic field generated by the permanent magnets on the track path. The stator of a linear induction motor and magnetic plate which supplies a moving force to the carrier in the direction of the track path in the non-contact manner are provided below the track surface of the track path.

Carrying apparatus having carrier levitated by magnetic force

Growing community of inventors

Shibuya Tokyo, Japan

Masakuni Akashi