Nec Corporation

Tatsuya Yoshimoto

Hiroshi Yoshida

Daisuke Ohta

In order to generate a trajectory that enables efficient excavation of an object, an excavation trajectory generation apparatusincludes: an excavation point obtaining sectionconfigured to obtain information related to an excavation point at which an objectis to be excavated; a parameter calculation sectionconfigured to calculate a parameter to be used for generating an excavation trajectory; and an excavation trajectory generation sectionconfigured to generate a trajectory with which an excavatorexcavates the object, based on the excavation point, accumulation height information for the objectat the excavation point, and an excavation possible range for the excavatorto excavate the object

Method for generating excavation trajectory, system, and excavation trajectory generation apparatus

A feedback control processing for computing a feedback control input value for controlling the posture of a construction machine using the control gain, in which a control parameter adjustment processing includes: overshoot computation processing for computing an amount of overshoot of a posture detection value with respect to a target position in a previous control section; addition/subtraction rate computation processing for computing a control gain addition/subtraction rate, which is an addition/subtraction rate of the control gain in the next control section, based on the amount of overshoot; addition/subtraction rate smoothing processing for computing a post-smoothing addition/subtraction rate in which the control gain addition/subtraction rate is smoothed based on a post-smoothing addition-subtraction rate computed in the previous control section and the control gain addition/subtraction rate; and control gain computation processing for computing the control gain in the next control section from the post-smoothing addition/subtraction rate.

Work control method, work control system, and work control apparatus of construction machine

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.

Filtering device, control system, and filtering method

The present invention provides an excavation system capable of improving the work efficiency at a worksite. An excavation device () excavates an object () treated as an excavation target at an excavation spot. A first detection device () is installed at an excavation spot away from the excavation device (). The first detection device () detects information related to the object () at the excavation spot. A control device () transmits, to the excavation device (), control information related to operations of the excavation device () based on target location data indicating the position of the object (), which corresponds to information related to the object (). The excavation device () executes operations for excavation in accordance with the control information.

Excavation system, work system, control device, control method, and non-transitory computer-readable medium storing a program

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.

Track following system, track following method, and computer readable medium

A remote operation apparatus capable of remotely operating a work machine efficiently and with high accuracy is provided. A remote operation apparatus () is connected to a work machine () via a communication network N, and includes an operation input unit () that inputs an operation signal to the remote operation apparatus (), the operation signal in response to an operation performed by an operator, an operation calculation unit () that acquires a magnitude of an operation from the operation signal, an operation change amount calculation unit () that acquires an operation change amount from the operation signal, a communication delay time measurement unit () that measures a communication delay time, and a speed calculation unit () that calculates an operation speed of the work machine () based on the magnitude of the operation, the operation change amount, and the communication delay time.

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Tokyo, Japan

Tatsuya Yoshimoto