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公开(公告)号：US12198670B2
公开(公告)日：2025-01-14
申请号：US17910572
申请日：2020-03-30
Applicant: NEC Corporation
Inventor： Daisuke Ohta , Hiroshi Yoshida , Tatsuya Yoshimoto
IPC: G10K11/178
Abstract: A filtering device is configured to estimate the characteristics of noise superposed on measurement data relating to the status of a controlled machine based on the status information representing the status of a controlled machine, thus adjusting the filtering to eliminate noise based on the estimated noise characteristics.
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公开(公告)号：US12164279B2
公开(公告)日：2024-12-10
申请号：US17624925
申请日：2019-07-16
Applicant: NEC Corporation
Inventor： Hiroshi Yoshida
IPC: G05B19/4155
Abstract: In order to provide an estimation apparatus estimating a true value from observation data without determining a state equation for a target to be controlled, the estimation apparatus includes a prediction section and an update section. The prediction section executes linear prediction on time-series data, which includes observation values acquired from a sensor attached to the target to be controlled, to calculate an estimate value before update relating to a state of the target to be controlled. The update section updates the estimate value before update by using the observation value acquired from the sensor. The prediction section may calculate the estimate value before update by weighted linear prediction on the time-series data of the observation values.
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公开(公告)号：US12043990B2
公开(公告)日：2024-07-23
申请号：US17426742
申请日：2020-01-29
Applicant: NEC Corporation
Inventor： Tatsuya Yoshimoto , Hiroshi Yoshida
Abstract: A convergence determination unit determines whether a state of the bucket has converged to a current target state. A target state update unit is configured to update a target state of the bucket when the convergence determination unit determines that the state of the bucket has converged to the current target state. The convergence determination unit includes a first convergence determination unit and a second convergence determination unit. The first convergence determination unit determines whether a swing angle of each mechanism has converged to the corresponding target swing angle under a first convergence condition. The second convergence determination unit determines whether a swing angle of each mechanism has converged to the corresponding target swing angle under a second convergence condition, which is stricter than the first convergence condition.
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公开(公告)号：US20230315113A1
公开(公告)日：2023-10-05
申请号：US18015664
申请日：2020-07-21
Applicant: NEC Corporation
Inventor： Taichi KUMAGAI , Hiroshi Yoshida
IPC: G05D1/02
CPC classification number: G05D1/0223 , G05D2201/0216
Abstract: In order to provide a moving body control system, a control apparatus, and a moving body control method that can control travel distance in returning to a target path, the moving body control system includes a moving body and a control apparatus configured to control the moving body to follow a target path, wherein the control apparatus is configured to: calculate distance until shifting the moving body to an asymptotic-orbit for the target path by turning the moving body, at each of one or more candidate center-of-gravity velocities of the moving body, based on a position of the moving body and an angle between a moving direction of the moving body and the target path; and determine a target center-of-gravity velocity of the moving body from the one or more candidate center-of-gravity velocities based on the calculated distance.
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5.发明授权公开(公告)号：US12135554B2
公开(公告)日：2024-11-05
申请号：US17640972
申请日：2020-09-16
Applicant: NEC Corporation
Inventor： Shinya Yasuda , Taichi Kumagai , Hiroshi Yoshida
Abstract: In order to appropriately determine whether or not a moving body can pass through a passage in a target range for generating a movement path, a passability determination apparatus 100 includes: an obstacle detection section 153 configured to detect a passage obstacle obstructing passage of a moving body 50, based on image information obtained by imaging a target range for generating a movement path for the moving body 50; a determination section 155 configured to determine passability for the moving body through a passage area included in the target range, based on detection of the passage obstacle; and a transmission processing section 157 configured to send passability information related to the passability for the moving body 50, to a movement path generation apparatus 200 generating the movement path.
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Patent Agency Ranking
公开(公告)号：US11856345B2
公开(公告)日：2023-12-26
申请号：US17254125
申请日：2019-06-27
Applicant: NEC Corporation
Inventor： Hiroshi Yoshida
IPC: H04Q9/02 , H04L43/0852
CPC classification number: H04Q9/02 , H04L43/0852 , H04Q2209/10 , H04Q2209/70
Abstract: A remote control apparatus measures a communication delay in a communication network, generates a probability distribution of the communication delay, generates, based on the probability distribution of the communication delay, a plurality of arrival patterns, including an arrival time of a control input at a control target, predicts a state of the control target at a time of arrival of the control input, calculates a control input set by calculating a plurality of control inputs corresponding respectively to the plurality of states predicted, determines a control input to be outputted to the control target, based on a result of statistical processing applied on the control input set calculated.
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7.发明授权公开(公告)号：US10965570B2
公开(公告)日：2021-03-30
申请号：US16325779
申请日：2017-08-07
Applicant: NEC Corporation
Inventor： Hiroshi Yoshida
Abstract: In order to improve a transient response and stability of remote control when a transmission delay varies, a remote control device receives a control result from a control target device, generates control data for performing a feedback control with dead time compensation, based on the control result and a delay setting value, determines the delay setting value, based on a history of a delay amount of transmitted/received data to/from the control target device, transmits the delay setting value, and transmits the control data and a generation time of the control data. And, a delay adjustment device receives control data from a remote control device and storing the control data, receives a delay setting value to be used for dead time compensation in the remote control device, and outputs the control data to a control target, based on the delay setting value and a generation time of the control data.
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8.发明授权公开(公告)号：US10742758B2
公开(公告)日：2020-08-11
申请号：US16078216
申请日：2017-03-08
Applicant: NEC Corporation
Inventor： Hiroshi Yoshida
Abstract: A communication analysis device updates statistical information on a content access based on the communication session log of a user. The content access is an aggregation of a plurality of communication sessions needed for browsing one website. The communication analysis device acquires session information pertaining to one communication session, and determines whether a lapsed time from the start time or end time of a base communication session to the start time or end time of the one communication session is equal to or less than a threshold value. When the lapsed time is equal to or less than the threshold value, the communication analysis device determines that the one communication session is included in the same content access as the base communication session, and updates the statistical information of the content access. The communication analysis device stochastically sets the threshold value based on a prescribed probability distribution.
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公开(公告)号：US20250093863A1
公开(公告)日：2025-03-20
申请号：US18832584
申请日：2022-02-18
Applicant: NEC Corporation
Inventor： Shinya YASUDA , Hiroshi Yoshida
Abstract: A computing device includes an execution unit that simulates a state of a drive device after the drive device is driven according to a control input, on the basis of a value of the control input capable of being input to the drive device, an analysis unit that selects a main component axis by performing main component analysis on the state distribution of the drive device that is specified through simulations performed a plurality of times by the execution unit, and a determination unit that determines a value to be used for evaluating a candidate for the control input to be input to the drive device, on the basis of a selection result by the analysis unit.
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公开(公告)号：US11977377B2
公开(公告)日：2024-05-07
申请号：US17054822
申请日：2019-03-08
Applicant: NEC Corporation
Inventor： Tatsuya Yoshimoto , Hiroshi Yoshida
CPC classification number: G05D1/0022 , B60W30/18109 , B62D15/021 , G05D1/0016
Abstract: A remote operation apparatus capable of remotely operating a work machine efficiently and with high accuracy is provided. A remote operation apparatus (100) is connected to a work machine (200) via a communication network N, and includes an operation input unit (101) that inputs an operation signal to the remote operation apparatus (100), the operation signal in response to an operation performed by an operator, an operation calculation unit (108) that acquires a magnitude of an operation from the operation signal, an operation change amount calculation unit (109) that acquires an operation change amount from the operation signal, a communication delay time measurement unit (110) that measures a communication delay time, and a speed calculation unit (111) that calculates an operation speed of the work machine (200) based on the magnitude of the operation, the operation change amount, and the communication delay time.
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