Abstract: A calibration system for an excavator includes the excavator having an upper structure swingably attached to a chassis, a working machine having a boom, an arm, and a working tool, and a current position computation unit configured to compute a current position of a working point of the working tool; a calibration device configured to calibrate parameters based on parameters indicating dimensions and rotation angles of the boom, the arm, and the working tool; an external measurement device that measures a position of the working point; and an inclination information detection device that detects inclination information of the excavator in an anteroposterior direction. The calibration device corrects positions of the working point measured by the external measurement device, based on the inclination information of the excavator in the anteroposterior direction, and computes calibrated values of the parameters based on coordinates of the working point at corrected positions.

Abstract: A first target engine speed is set in response to a command value commanded by a command unit. A second target engine speed equal to or lower than the first target engine speed is set based on the first target engine speed. When the first target engine speed is reduced, the second target engine speed is set to be constant or be decreased and a reduction range for decreasing the first target engine speed to the second target engine speed is set to be decreased. The reduction range is set at zero when the first target engine speed is equal to or lower than an engine speed at least at a maximum torque point.

Abstract: A controller constituting a construction machine includes: a target value computing unit that generates a speed target value of a boom based on a lever manipulating signal; a target value correcting unit that corrects the speed target value; and a command signal output unit that outputs a command signal to a boom driving device based on the corrected speed target value. The target value correcting unit includes: a motion information acquiring unit that acquires motion information on a motion of an arm; a maximum value determining unit that determines based on the motion information a maximum correction value for reducing suppression of a floating motion by a floating motion suppressing unit as the motion of the arm becomes faster; and a correction value regulating unit that corrects the speed target value based on the maximum correction value.

Abstract: The system includes: a variable displacement hydraulic pump supplying pressure oil to a hydraulic actuator; a pressure detector detecting a pump discharge pressure from the hydraulic pump; a control valve controlling a supply of the pressure oil to the hydraulic actuator; a controller controlling a pump displacement of the hydraulic pump; a hydraulic motor rotating an upper structure of the construction machine; a swing relief valve defining a relief pressure of the hydraulic motor; and a control lever switching a control valve for the hydraulic motor. The controller includes: an adjuster that, when a pump discharge pressure detected by the pressure detector exceeds a first set value, conducts an adjustment to reduce the pump displacement; and a canceller that cancels the adjustment when the pump discharge pressure falls below a second set value. The second set value is equal to or larger than the first set value.

Abstract: An excavation control system includes a working unit having a bucket, a designed landform data storage part storing designed landform data, a bucket position data generation part that generates bucket position data, a designed surface data generation part, and an excavation limit control part. The designed surface data generation part generates superior and subordinate designed surface data based on the designed landform and bucket position data. The superior designed surface data indicates a superior designed surface corresponding to a position of the bucket. The subordinate designed surface data indicates a first subordinate designed surface linked to the superior designed surface. The designed surface data generation part generates shape data indicating shapes of the superior designed surface and the first subordinate designed surface. The excavation limit control part automatically adjusts a position of the bucket.

Abstract: A construction machine includes: a working equipment; a manipulating unit that manipulates the working equipment; and a controller that controls the working equipment. The controller includes: a rolling compaction determining unit that determines whether or not the working equipment is under a rolling compaction operation for hardening earth and sand through reciprocation; and a command output regulating unit that controls the working equipment so that a motion speed of the working equipment does not exceed a predetermined maximum value when the rolling compaction determining unit determines that the working equipment is under the rolling compaction operation.

Abstract: An excavation control system includes a working unit having a bucket, a designed landform data storage part storing designed landform data, a bucket position data generation part that generates bucket position data, a designed surface data generation part, and an excavation limit control part. The designed surface data generation part generates superior and subordinate designed surface data based on the designed landform and bucket position data. The superior designed surface data indicates a superior designed surface corresponding to a prescribed position on the bucket. The subordinate designed surface data indicates a plurality of subordinate designed surfaces linked to the superior designed surface. The designed surface data generation part generates shape data based on the superior and subordinate designed surface data. The shape data indicates shapes of the superior designed surface and the plurality of subordinate designed surfaces.

Abstract: An excavation control system includes a global coordinate computing device, a prediction correcting part, a cutting edge position data generating part, and a designed terrain data generating part. The global coordinate computing device generates revolving unit orientation data (Q) that indicates an orientation of a revolving unit. The prediction correcting part generates corrected revolving unit orientation data (R) by predictively correcting the revolving unit orientation data (Q) based on a delay time (t) and revolve angle speed data (D?) that indicates a revolve angle speed (?) of the revolving unit. The cutting edge position data generating part generates cutting edge position data (S) that indicates a position of a cutting edge based on reference position data (P1), the revolving unit orientation data (Q), and the corrected revolving unit orientation data (R).

Abstract: An excavation control system includes a working unit having a bucket, a designed landform data storage part storing designed landform data, a bucket position data generation part that generates bucket position data, a designed surface data generation part, and an excavation limit control part. The designed surface data generation part generates superior and subordinate designed surface data based on the designed landform and bucket position data. The superior designed surface data indicates a superior designed surface corresponding to a prescribed position on the bucket. The subordinate designed surface data indicates a plurality of subordinate designed surfaces linked to the superior designed surface. The designed surface data generation part generates shape data based on the superior and subordinate designed surface data. The shape data indicates shapes of the superior designed surface and the plurality of subordinate designed surfaces.

Abstract: A first target engine speed is set in response to a command value commanded by a command unit and a second target engine speed lower than the first target engine speed is set based on the first target engine speed. A reduction range from the first target engine speed to the second target engine speed is set according to a type of a hydraulic actuator operated by an operation lever or a combination of plural hydraulic actuators operated by an operation lever.

Abstract: A controller of a construction machine includes a target command value computing unit generating a speed target command value for normal motion of a working equipment based on a manipulating signal, a target command value correcting unit correcting the command value, and a command signal output unit outputting a command signal to a driving device based on the corrected speed target command value. The target command value correcting unit includes a vibration suppressing unit generating a speed target command value for vibration suppression to suppress generation of vibrations in the working equipment based on the command value, a peak value recognizing unit recognizing a peak value of the command value based on the command value sequentially generated by the target command value computing unit, and a target command value compositing unit compositing the command values according to the peak value to correct the command value.

Abstract: A first target engine speed is set in response to a command value commanded by a command unit and a second target engine speed lower than the first target engine speed is set based on the first target engine speed. A reduction range from the first target engine speed to the second target engine speed is set according to a type of a hydraulic actuator operated by an operation lever or a combination of plural hydraulic actuators operated by an operation lever.

Abstract: A first target engine speed is set in response to a command value commanded by a command unit. A second target engine speed equal to or lower than the first target engine speed is set based on the first target engine speed. When the first target engine speed is reduced, the second target engine speed is set to be constant or be decreased and a reduction range for decreasing the first target engine speed to the second target engine speed is set to be decreased. The reduction range is set at zero when the first target engine speed is equal to or lower than an engine speed at least at a maximum torque point.

Abstract: A controller of a construction machine includes a target command value computing unit generating a speed target command value for normal motion of a working equipment based on a manipulating signal, a target command value correcting unit correcting the command value, and a command signal output unit outputting a command signal to a driving device based on the corrected speed target command value. The target command value correcting unit includes a vibration suppressing unit generating a speed target command value for vibration suppression to suppress generation of vibrations in the working equipment based on the command value, a peak value recognizing unit recognizing a peak value of the command value based on the command value sequentially generated by the target command value computing unit, and a target command value compositing unit compositing the command values according to the peak value to correct the command value.

Abstract: A controller constituting a construction machine includes: a target value computing unit that generates a speed target value of a boom based on a lever manipulating signal; a target value correcting unit that corrects the speed target value; and a command signal output unit that outputs a command signal to a boom driving device based on the corrected speed target value. The target value correcting unit includes: a motion information acquiring unit that acquires motion information on a motion of an arm; a maximum value determining unit that determines based on the motion information a maximum correction value for reducing suppression of a floating motion by a floating motion suppressing unit as the motion of the arm becomes faster; and a correction value regulating unit that corrects the speed target value based on the maximum correction value.

Abstract: A construction machine includes: a working equipment; a manipulating unit that manipulates the working equipment; and a controller that controls the working equipment. The controller includes: a rolling compaction determining unit that determines whether or not the working equipment is under a rolling compaction operation for hardening earth and sand through reciprocation; and a command output regulating unit that controls the working equipment so that a motion speed of the working equipment does not exceed a predetermined maximum value when the rolling compaction determining unit determines that the working equipment is under the rolling compaction operation.

Abstract: The system includes: a variable displacement hydraulic pump supplying pressure oil to a hydraulic actuator; a pressure detector detecting a pump discharge pressure from the hydraulic pump; a control valve controlling a supply of the pressure oil to the hydraulic actuator; a controller controlling a pump displacement of the hydraulic pump; a hydraulic motor rotating an upper structure of the construction machine; a swing relief valve defining a relief pressure of the hydraulic motor; and a control lever switching a control valve for the hydraulic motor. The controller includes: an adjuster that, when a pump discharge pressure detected by the pressure detector exceeds a first set value, conducts an adjustment to reduce the pump displacement; and a canceller that cancels the adjustment when the pump discharge pressure falls below a second set value. The second set value is equal to or larger than the first set value.

Abstract: A control device for reducing a marking time in a marking device. This control device performs control operations whereby an image 20 of an area that circumscribes the entire "ABCDE" pattern of an original image is retrieved, the circumscribed area image 20 is divided into a plurality of image segments 19 of a predetermined size, and each of the plurality of image segments 21 is sequentially displayed on a mask.

Abstract: An IC package processing and measuring system comprises: a processing and measuring device that executes processing or measurement on a prescribed number of IC packages juxtaposed in a prescribed area; a feed device that feeds IC packages into the prescribed area, a prescribed number at a time, by feeding with a prescribed feed pitch an IC package support on which are loaded a plurality of juxtaposed IC packages; and a control device that controls the processing and measuring device and feed device. The control device comprises position calculating means that uses shape data of the IC package and IC package support to calculate target positions of processing and measurement of the IC packages in the prescribed area and outputs the calculated position data to the processing and measuring device.

Abstract: An apparatus for and a method of laser marking make it possible to perform laser marking on workpieces being continuously conveyed, without having to stop them at intervals, thereby achieving an improvement in production efficiency. For this purpose, the marking apparatus has a second deflector (9) which includes a mirror (10), for reflecting a laser beam transmitted through a mask (6), and movable lenses (16, 17) for receiving the reflected laser beam from the reflective mirror (10) and applying it to the surface of a workpiece (8) for marking, with the movable lenses (16, 17) being mounted on a moving mechanism (15) which moves in synchronism with the speed at which the workpiece is conveyed.