Yanmar Co., Ltd.

Yanmar Power Technology Co., Inc.

Yanmar Holdings Co., Ltd.

Naohiro Hara

Jun Watanabe

Tomoya Fukukawa

Akiyoshi Hayashi

Yuichiro Dake

Hiroaki Wakahara

Gakuji Tamura

Junichi Hitachi

Toshiyuki Yokoue

Takao Nakanishi

Isao Wakabayashi

Toshimitsu Hirose

Yasuhiro Ueda

Shingo Eguchi

Kensuke Kaneda

Keishi Yamanaka

Masaki Yamada

Tatsuya Fujimori

Satoshi Minamiyama

A ship docking assistance device includes a position azimuth information acquisition unit; a LIDAR; a map generation updating unit; a high-point acquisition unit; and a position azimuth estimation unit. The LIDAR acquires point-group data three-dimensionally indicating the environment around a ship. The map generation updating unit generates a map around the ship based on the point-group data. The high-point acquisition unit acquires, from within the point-group data, a high point having a prescribed height or more. The position azimuth estimation unit estimates the position and the azimuth of the ship through matching between the position of the high point acquired by the high-point acquisition unit and the position of the high point in the map. The map generation updating unit updates the map by placing the point-group data in the map using, as references, the position and the azimuth of the ship estimated by the position azimuth estimation unit.

Ship docking assistance device

This ship maneuvering device causes a ship having at least one propulsion device mounted thereon to travel along a scheduled course. The ship maneuvering device is provided with a control unit. The control unit acquires an azimuth deviation between an actual bow azimuth, which is the current bow azimuth of the ship, and a target bow azimuth of the ship, and, on the basis of the azimuth deviation, generates a thrust command that indicates the thrust with which the ship is to be propelled. In the case where the azimuth deviation is equal to or greater than a prescribed value, the control unit generates a thrust command such that causes the speed of the ship is reduced below an actual speed which is the current speed of the ship.

Ship maneuvering device and ship

The present disclosure includes a radar configured to detect surrounding objects and terrain, and a LIDAR configured to detect the surrounding objects and terrain using a narrower detection range and a higher resolution than the radar. The disclosure also includes a first map, such as a wide-area map, generated based on information about the surrounding as detected by the radar, a second map, such as a high-resolution map, based on information about the surroundings as detected by the LIDAR, and a composite map that has the grid width of the first map and the grid width of the second map.

Map generation method and map generation device

A control target controller generates control targets in accordance with a route, the control targets being for controlling the location and orientation of a ship. The route has a plurality of via points. Each of the via points has information about a target location and a target orientation for the ship. The route is made up of a plurality of partial routes that sequentially connect the target locations of the via points. The control target controller comprises a transit target point generation part and an arrival determination part. The transit target point generation part can generate, as control targets, transit target points that are in the middle of the partial routes and have information about a target location and a target orientation for the ship. On the basis of the current location and the current orientation of the ship, the arrival determination part determines whether the ship has arrived at the transit target points.

Control target generation device and ship-steering control device

A LiDAR included in this automatic docking device measures the distance to a surrounding object at each predetermined angle by irradiating the object with light and receiving the light reflected by the object. When a ship offshore is instructed to perform automatic docking, the ship navigates to some extent by automatic navigation based on satellite positioning, and is then switched to automatic navigation based on the LiDAR. Before switching to the automatic navigation based on the LiDAR, the LiDAR performs preparatory measurement for measuring the distance to an object around a docking position. In this preparatory measurement, a control unit controls to change, for example, the orientation of the ship such that light emitted from the LiDAR can be reflected by the object around the docking position and can be received by the LiDAR.

Automatic docking device

A construction machine includes an attitude sensor that detects the current attitude of an upper turning body; a reference angular acceleration calculation unit that calculates a reference angular acceleration to be generated when an electric turning motor is driven by a torque command value generated according to the operation amount of an operation part; a reference gravity torque calculation unit that, on the basis of the current attitude and the deviation between an actual angular acceleration, calculates a reference gravity torque; a gravity compensation torque calculation unit that calculates a gravity compensation torque for compensating a torque component generated about the turning axis by the gravity in the current attitude; and a correction unit that corrects the torque command value by using the gravity compensation torque so as to cancel the torque component generated about the turning axis by the gravity in the current attitude.

Construction machine

For a vessel steering apparatus for performing a movement control to move a vessel to a target position on the basis of a signal of a GPS apparatus, a movement control stop area, a buffer area adjacent to the movement control stop area, and a movement-controlling area adjacent to the buffer area are set on the basis of the distance from the target position, wherein in the movement control stop area, thrust generation by a propulsion apparatus is stopped; in the movement-controlling area, thrust is generated by the propulsion apparatus; and in the buffer area, thrust is generated by the propulsion apparatus of the vessel for movement control only in the case where the vessel moves from the movement-controlling area to the buffer area, then stays in the buffer area, and moves in a direction away from the target position.

Vessel steering apparatus

A ship handling device may be provided with which a ship moves and turns in a target orientation toward target coordinates without monitoring the behavior of the ship against disturbance or the characteristics of the ship. The ship handling device moves the ship toward the target coordinates and in the target orientation from a GPS device and a signal from an orientation sensor, wherein the target coordinates and the target orientation are calculated from operation of a joystick lever, and a thrust is generated by a propulsion device so as to move the ship to the target coordinates and the target orientation after a signal finalizing the target coordinates and the target orientation has been acquired.

Ship handling device

The purpose is providing a ship handling device easily determining a predetermined correction coefficient regardless of positions of a side thruster and a forward/backward propeller and the center of gravity of a ship and the shape of the ship. The device is provided with a joystick lever for indicating a propulsion direction and the magnitude of thrust by tilting direction and angle, wherein: a lateral movement thrust is generated by the side thruster in accordance with the joystick lever; a first correction thrust is generated by the forward/backward propeller in accordance with the joystick lever so as to cancel out a rotation moment; and a first correction coefficient for calculating a first correction thrust with respect to the lateral movement thrust is determined.

Provided is a technology that facilitates a calibrating operation. A ship steering system for outdrive device includes an outdrive device, a control device that provides an instruction about a turning direction of the outdrive device, and a ship steering lever that instructs the control device about a traveling direction of a hull, and is provided with a monitor capable of displaying an image for matching an actual traveling direction with the traveling direction of the hull according to the instruction from the ship steering lever. The monitor shows the direction in which the ship steering lever is tipped, and indicates that the operation is proper if the direction in which the ship steering lever is tipped corresponds to a pre-set direction.

Ship steering system for outdrive device

An engine rotational speed control device () includes a noise removal processing unit () which corrects a command value, wherein the noise removal processing unit () is configured to set a current first output value (B(i)) to be identical to a previous first output value (B(i&#x2212;1)) in a case where, in a latest step group, the number of successive increase steps is smaller than a first predetermined number (n) and the number of successive decrease steps is smaller than the first predetermined number (n), the increase step is a step in which a current first input value (A(i)) is greater than the previous first output value (B(i&#x2212;1)) by a first set width (n) or more, and the decrease step is a step in which the current first input value (A(i)) is smaller than the previous first output value (B(i)) by the first set width (n) or more.

Engine rotational speed control device

A ship steering device capable of steering a hull in an intended direction by correcting an unintended rotation that occurs during an oblique sailing operation regardless of the type and size of the hull. A ship steering device is provided with an elevation angle sensor for detecting the elevation angle &#x3b1; of a hull, a hull speed sensor for detecting the speed V of the hull, a storage means storing the relation among the elevation angle &#x3b1; of the hull, the speed V of the hull, and a correction value K, and a calculation means serving as a correction value determination means, and an operation amount by which a joystick is operated such that the hull does not turn in the state in which the hull is obliquely sailed is determined by the calculation means and used as the correction value K.

Ship steering device and ship steering method

Provided is a ship maneuvering device that can increase operation sensitivity and enables smooth operation when simultaneously operating the rotation component determination unit and the oblique sailing component determination unit of an operation means. In the ship maneuvering device, a control devicecomputes a rotation component propulsion vector Trot for rotation and an oblique sailing component propulsion vector Tfor oblique sailing for left and right out-drive unitsA,B from the amount of operation of a joystick, calculates the combined torque T by combining the rotation component propulsion vector Tand the oblique sailing component propulsion vector Tfor each of the left and right out-drive unitsA,B, and computes the propulsion and orientation for each of the left and right out-drive unitsA,B.

Ship maneuvering device

A ship maneuvering device rotates a propeller at a lower rotational frequency than the rotational frequency of the minimum idling speed of an engine. A control device has a crawling speed navigation mode. A crawling speed navigation mode button that selects whether or not to execute the crawling speed navigation mode is connected to the control device. When the crawling speed navigation mode is selected, and the amount of operation of a joystick lever is at or beneath a baseline amount of operation Ms, the control device causes the rotational frequency N of the engine to be the rotational frequency Nlow of the minimum idling speed, and in accordance with the amount of operation of the joystick lever, varies the duty ratio D, which is the fraction of time Tthat a main clutch is engaged in a predetermined cycle T, within a range of no greater than 100%.

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Osaka, Japan

Naohiro Hara