Patent application number | Description | Published |
20090019450 | APPARATUS, METHOD, AND COMPUTER PROGRAM PRODUCT FOR TASK MANAGEMENT - A task management apparatus comprises a plurality of processors, and correspondingly stores, a plurality of tasks to be assigned to the processors within a predetermined period of time, and temporal groups each of which is assigned to the plurality of the tasks. The task management apparatus assigns one of the tasks to one of the processors. After having assigned the task, the task management apparatus assigns, to the one of the processors that has finished processing the assigned task, the other tasks that are in correspondence with the same temporal group as the temporal group with which the assigned task is in correspondence, before assigning the tasks that are not in correspondence with the temporal group. | 01-15-2009 |
20090019451 | ORDER-RELATION ANALYZING APPARATUS, METHOD, AND COMPUTER PROGRAM PRODUCT THEREOF - An order-relation analyzing apparatus collects assigned destination processor information, a synchronization process order and synchronization information, determines a corresponding element associated with a program among a plurality of elements indicating an ordinal value of the program based on the assigned destination processor information, when an execution of the program is started, and calculates the ordinal value indicated by the corresponding element for each segment based on the synchronization information, when the synchronization process occurs while executing the program. When a first corresponding element associated with a second program, of which the execution starts after the execution of a first program associated with the first corresponding element finishes, is determined, the ordinal value of the second program is calculated by calculating the ordinal value indicated by the first corresponding element. | 01-15-2009 |
20100242046 | MULTICORE PROCESSOR SYSTEM, SCHEDULING METHOD, AND COMPUTER PROGRAM PRODUCT - A multicore processor system includes: a plurality of software units, each of which executes predetermined processing using one or more cores among a plurality of cores of a multicore processor; and a scheduler that performs adjustment of allocation of the cores of the multicore processor to each of the software units and core occupation time of each of the software units to cause the software units to operate in parallel. Each of the software units outputs execution result data of the predetermined processing to an output buffer and issues notification based on an accumulated amount of the execution result data, which is output to the output buffer by the software unit, to the scheduler. The scheduler adjusts, based on the received notification, any one of a number of cores allocated to each of the software units and core occupation time of each of the software units or both. | 09-23-2010 |
20120206075 | POWER INVERTER AND ELECTRIC POWER STEERING CONTROLLER - A power inverter is provided that can apply to an AC rotary machine three-phase voltages of high amplitudes and low distortion while suppressing ohmic loss attributed to current detection resisters. The power inverter includes a superimposed voltage command computing means for computing and outputting a superimposed voltage command depending on the difference between a maximum value and a minimum value of three-phase voltage commands; a voltage command modification means for adding the superimposed voltage command to each of the three-phase voltage commands and outputting modified three-phase voltage commands; and a power output means for outputting the three-phase voltages based on the modified three-phase voltage commands. | 08-16-2012 |
20130014583 | ANGLE DETECTION METHOD WITH RESOLVERAANM KIMPARA; YoshihikoAACI Chiyoda-kuAACO JPAAGP KIMPARA; Yoshihiko Chiyoda-ku JPAANM HORI; YasuakiAACI Kobe-shiAACO JPAAGP HORI; Yasuaki Kobe-shi JPAANM MORI; TatsuyaAACI TokyoAACO JPAAGP MORI; Tatsuya Tokyo JPAANM KIFUKU; TakayukiAACI Chiyoda-kuAACO JPAAGP KIFUKU; Takayuki Chiyoda-ku JPAANM OKANOUE; TakahiroAACI TokyoAACO JPAAGP OKANOUE; Takahiro Tokyo JP - In an angle detection method with a resolver, the method being for detecting a rotational angle of a rotator by synchronously detecting a first signal and a second signal that are two phase sine wave modulation signals obtained from a one phase excitation/two phase output resolver, the method includes: a first signal detection process which detects a signal in the order of the first signal and the second signal; and a second signal detection process which detects a signal in the order of the second signal and the first signal. | 01-17-2013 |
20130249454 | DRIVING APPARATUS FOR MULTIPLEX-WINDING ROTARY MACHINE - Provided are rotational position detection means detecting the rotational position of a multiplex-winding rotary machine; failure determination means determining failure of the rotational position detection means; control means calculating a voltage instruction for each winding group, based on the rotational position detected by the rotational position detection means; and voltage application means applying voltage to each winding group, based on the voltage instruction. According to the failure determination by the failure determination means, the control means outputs a voltage instruction for rotational position estimation to the voltage application means, and estimates the rotational position θe, based on at least one of voltage and current obtained from the winding group in accordance with the voltage instruction. | 09-26-2013 |
Patent application number | Description | Published |
20120057381 | ELECTRIC-POWER CONVERSION APPARATUS - There is provided an electric-power conversion apparatus including a chopper circuit; a current sense resistor that detects the output current of the chopper circuit; a differential detection circuit that outputs, as a differential detection signal (vo), the electric potential difference across the current sense resistor; and a calculation means that corrects the differential detection signal (vo) from the differential detection circuit by use of a control signal (D | 03-08-2012 |
20140058630 | ELECTRIC POWER STEERING CONTROL DEVICE - Provided is a control device for an electric power steering device, for controlling an output torque of a motor for outputting an assist torque based on a steering-torque signal from a torque sensor for detecting a steering torque, the control device for negatively feeding back a correction signal based on a motor-speed signal from motor-speed detection means for detecting a rotation speed of a rotary shaft of the motor to damp a vibration at a natural frequency determined in accordance with a transfer characteristic from the steering-torque signal to the output torque. | 02-27-2014 |
20140152206 | CONTROL DEVICE FOR ALTERNATING CURRENT ROTATING MACHINE AND ELECTRIC POWER STEERING DEVICE EQUIPPED WITH CONTROL DEVICE FOR ALTERNATING CURRENT ROTATING MACHINE - A control device for an AC rotating machine includes a voltage command calculation means ( | 06-05-2014 |
20140316733 | ANGLE DETECTING APPARATUS - An angle detecting apparatus is obtained. The angle detecting apparatus is capable of correcting an electrical angle frequency component of an angle signal contained angle signal. An angle detecting apparatus computes an angle signal of a rotary machine from a sine signal and a cosine signal obtained from the angle signal. Offset correction values for the sine signal and the cosine signal are computed from the angle signal. The computed offset correction value for the sine signal is added to the sine signal to correct the sine signal, and the computed offset correction value for the cosine signal is added to the cosine signal to correct the cosine signal. | 10-23-2014 |