Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Jouko Kalmari"'
Publikováno v:
Computers and Electronics in Agriculture. 133:119-127
Coordinated control of a hydraulic forestry crane and a vehicle platform is proposed.The vehicle follows a given path and the crane a time based trajectory.Path and trajectory tracking is based on nonlinear model predictive control.Average tracking e
Publikováno v:
CONTROL ENGINEERING PRACTICE. 39:56-66
Nonlinear model predictive control (NMPC) is a control strategy based on finding an optimal control trajectory that minimizes a given objective function. The optimization is recalculated at each control cycle and only the first control values are act
Publikováno v:
Computers and Electronics in Agriculture. 109:36-45
A hydraulic forestry crane was controlled using nonlinear model predictive control.Path tracking and anti-sway control were done simultaneously.Tests with three different target paths and different velocities were conducted.The average tracking error
Publikováno v:
IFAC Proceedings Volumes. 46:164-169
ISO 11783 is a communication standard for agricultural and forest machines. This standard allows an implement to command specific functions of a tractor. Agricultural tractors can be equipped for silvicultural work forming small scale forest machine.
Publikováno v:
IFAC Proceedings Volumes. 46:274-279
Cranes have often a freely hanging load or tool that starts easily swaying. Anti-sway control requires that the angles and angular velocities of the swinging object are measured. Some cranes can also rotate the tool with a hydraulic motor, and in man
Publikováno v:
IFAC Proceedings Volumes. 44:2226-2229
Sales of harvested wood is based on harvester head measurements. Therefore, an accurate length measurement is important when a log is being processed on a forest harvester. A stereo camera pair was mounted to the harvester head and the motions of the
Publikováno v:
ICRA
An approach to automatically detect and classify young spruce and birch trees in forest environment is presented. The method could be used in autonomous or semi-autonomous forest machines during tending operations. Detection is done by segmenting las
Real-time Detection of Young Spruce Using Color and Texture Features on an Autonomous Forest Machine
Publikováno v:
IJCNN
Forest machines are manually operated machines that are efficient when operated by a professional. Point cleaning is a silvicultural task in which weeds are removed around a young spruce tree. To automate point cleaning, machine vision methods are us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::539ed0ffe10bd3b61ef7469c9022947c
https://doi.org/10.1109/IJCNN.2013.6707122
https://doi.org/10.1109/IJCNN.2013.6707122
Publikováno v:
Springer Tracts in Advanced Robotics ISBN: 9783642134074
FSR
FSR
A new measurement concept for cut-to-length forest harvesters is presented in this paper. The cut-to-length method means that the trees are felled, delimbed and cut-to-length by the single-grip harvester before logs are transported to the roadside. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fc9ea078fa2198a901c2e85c711aa8e
https://doi.org/10.1007/978-3-642-13408-1_4
https://doi.org/10.1007/978-3-642-13408-1_4