The Experts below are selected from a list of 18624 Experts worldwide ranked by ideXlab platform
Herman Bruyninckx - One of the best experts on this subject based on the ideXlab platform.
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a hybrid pose Wrench control framework for quadrotor helicopters
International Conference on Robotics and Automation, 2012Co-Authors: Steven Bellens, Joris De Schutter, Herman BruyninckxAbstract:This paper presents a hybrid pose / Wrench control framework for quadrotor helicopters, allowing direct contact of the quadrotor with its environment and stable motion while in contact. The presented work explicitly takes into account the quadrotor's underactuation and utilizes a Wrench estimator, able to estimate the Wrench generated by the quadrotor using only quadrotor inputs and pose measurements. Experimental results of the quadrotor in pose and hybrid pose-Wrench control mode are presented, showing stable behaviour while moving in contact. Whereas a lot of research nowadays is focused mainly on free-flight applications, stable and robust Wrench control of quadrotors in direct contact with their environment, opens up new application areas for this class of flying robots.
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ICRA - A hybrid pose / Wrench control framework for quadrotor helicopters
2012 IEEE International Conference on Robotics and Automation, 2012Co-Authors: Steven Bellens, Joris De Schutter, Herman BruyninckxAbstract:This paper presents a hybrid pose / Wrench control framework for quadrotor helicopters, allowing direct contact of the quadrotor with its environment and stable motion while in contact. The presented work explicitly takes into account the quadrotor's underactuation and utilizes a Wrench estimator, able to estimate the Wrench generated by the quadrotor using only quadrotor inputs and pose measurements. Experimental results of the quadrotor in pose and hybrid pose-Wrench control mode are presented, showing stable behaviour while moving in contact. Whereas a lot of research nowadays is focused mainly on free-flight applications, stable and robust Wrench control of quadrotors in direct contact with their environment, opens up new application areas for this class of flying robots.
Patrick Monie - One of the best experts on this subject based on the ideXlab platform.
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Relationships between magmatism and extension along the Autun–La Serre fault system in the Variscan Belt of the eastern French Massif Central
International Journal of Earth Sciences, 2012Co-Authors: Flavien Choulet, Olivier Fabbri, Michel Faure, Patrick MonieAbstract:The ENE–WSW Autun Shear Zone in the northeastern part of the French Massif Central has been interpreted previously as a dextral Wrench fault. New field observations and microstructural analyses document a NE–SW stretching lineation that indicates normal dextral motions along this shear zone. Further east, similar structures are observed along the La Serre Shear Zone. In both areas, a strain gradient from leucogranites with a weak preferred orientation to highly sheared mylonites supports a continuous Autun–La Serre fault system. Microstructural observations, and shape and lattice-preferred orientation document high-temperature deformation and magmatic fabrics in the Autun and La Serre granites, whereas low- to intermediate-temperature fabrics characterize the mylonitic granite. Electron microprobe monazite geochronology of the Autun and La Serre granites yields a ca. 320 Ma age for pluton emplacement, while mica ^40Ar-^39Ar datings of the Autun granite yield plateau ages from 305 to 300 Ma. The ca. 300 Ma ^40Ar-^39Ar ages, obtained on micas from Autun and La Serre mylonites, indicate the time of the mylonitization. The ca. 15-Ma time gap between pluton emplacement and deformation along the Autun–La Serre fault system argue against a synkinematic pluton emplacement during late orogenic to postorogenic extension of the Variscan Belt. A ductile to brittle continuum of deformation is observed along the shear zone, with Lower Permian brittle faults controlling the development of sedimentary basins. These results suggest a two-stage Late Carboniferous extension in the northeastern French Massif Central, with regional crustal melting and emplacement of the Autun and La Serre leucogranites around 320 Ma, followed, at 305–295 Ma, by ductile shearing, normal brittle faulting, and subsequent exhumation along the Autun–La Serre transtensional fault system.
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Relationships between magmatism and extension along the Autun–La Serre fault system in the Variscan Belt of the eastern French Massif Central
International Journal of Earth Sciences, 2012Co-Authors: Flavien Choulet, Olivier Fabbri, Michel Faure, Patrick MonieAbstract:The ENE–WSW Autun Shear Zone in the northeastern part of the French Massif Central has been interpreted previously as a dextral Wrench fault. New field observations and microstructural analyses document a NE–SW stretching lineation that indicates normal dextral motions along this shear zone. Further east, similar structures are observed along the La Serre Shear Zone. In both areas, a strain gradient from leucogranites with a weak preferred orientation to highly sheared mylonites supports a continuous Autun–La Serre fault system. Microstructural observations, and shape and lattice-preferred orientation document high-temperature deformation and magmatic fabrics in the Autun and La Serre granites, whereas low- to intermediate-temperature fabrics characterize the mylonitic granite. Electron microprobe monazite geochronology of the Autun and La Serre granites yields a ca. 320 Ma age for pluton emplacement, while mica ^40Ar-^39Ar datings of the Autun granite yield plateau ages from 305 to 300 Ma. The ca. 300 Ma ^40Ar-^39Ar ages, obtained on micas from Autun and La Serre mylonites, indicate the time of the mylonitization. The ca. 15-Ma time gap between pluton emplacement and deformation along the Autun–La Serre fault system argue against a synkinematic pluton emplacement during late orogenic to postorogenic extension of the Variscan Belt. A ductile to brittle continuum of deformation is observed along the shear zone, with Lower Permian brittle faults controlling the development of sedimentary basins. These results suggest a two-stage Late Carboniferous extension in the northeastern French Massif Central, with regional crustal melting and emplacement of the Autun and La Serre leucogranites around 320 Ma, followed, at 305–295 Ma, by ductile shearing, normal brittle faulting, and subsequent exhumation along the Autun–La Serre transtensional fault system.
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Relationships between magmatism and extension along the Autun-La Serre fault system in the Variscan Belt of the eastern French Massif Central
International Journal of Earth Sciences, 2012Co-Authors: Flavien Choulet, Olivier Fabbri, Michel Faure, Patrick MonieAbstract:The ENE-WSW Autun Shear Zone in the northeastern part of the French Massif Central has been interpreted previously as a dextral Wrench fault. New field observations and microstructural analyses document a NE-SW stretching lineation that indicates normal dextral motions along this shear zone. Further east, similar structures are observed along the La Serre Shear Zone. In both areas, a strain gradient from leucogranites with a weak preferred orientation to highly sheared mylonites supports a continuous Autun-La Serre fault system. Microstructural observations, and shape and lattice-preferred orientation document high-temperature deformation and magmatic fabrics in the Autun and La Serre granites, whereas low- to intermediate-temperature fabrics characterize the mylonitic granite. Electron microprobe monazite geochronology of the Autun and La Serre granites yields a ca. 320 Ma age for pluton emplacement, while mica 40Ar-39Ar datings of the Autun granite yield plateau ages from 305 to 300 Ma. The ca. 300 Ma 40Ar-39Ar ages, obtained on micas from Autun and La Serre mylonites, indicate the time of the mylonitization. The ca. 15-Ma time gap between pluton emplacement and deformation along the Autun-La Serre fault system argue against a synkinematic pluton emplacement during late orogenic to postorogenic extension of the Variscan Belt. A ductile to brittle continuum of deformation is observed along the shear zone, with Lower Permian brittle faults controlling the development of sedimentary basins. These results suggest a two-stage Late Carboniferous extension in the northeastern French Massif Central, with regional crustal melting and emplacement of the Autun and La Serre leucogranites around 320 Ma, followed, at 305-295 Ma, by ductile shearing, normal brittle faulting, and subsequent exhumation along the Autun-La Serre transtensional fault system.
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Deformation and emplacement of late hercynian leucogranites in the french Massif Central from AMS, Gravity and Geochronology data.
2004Co-Authors: Aude Gébelin, Patrick Monie, Michel Faure, Maurice Brunel, Nicolas Arnaud, Yan Chen, Guillaume Martelet, Françoise RogerAbstract:Hercynian leucogranitic plutons crop out over large areas in the French Massif Central hiding the earlier crustal structures. In the Limousin area, these granitic intrusions are spatially associated with normal faults and major strike-slip shear zones that continue the South Armorican shear zone. New 40Ar/39Ar dating of Wrench fault mylonites in Limousin yield ages bracketed between 310 Ma and 320 Ma. These faults which constitute the boundaries of hercynian leucogranites played a significant role in their emplacement and subsequent exhumation. From the example of the Millevaches granitic complex located in the middle of the French Massif Central, our study intends to highlight the massif structure at depth and to discuss the mode of emplacement of granites in intracontinental extensional context and the relationships between thermal and tectonic events experienced by the Hercynian orogen in Limousin between 360 and 300 Ma. Analysis and inversion of the residual Bouguer anomaly show that the N-S trending Millevaches massif is a 2 to 4 km thick laccolith. On the basis of AMS measurements, the micas subfabric suggests that the magnetic foliation and lineation display a general NW-SE sub-horizontal pattern on both sides of the N-S Pradines dextral Wrench fault that deforms the core of the massif on 4 to 5 km width. The new U/Pb and 40Ar/39Ar dates around 315 Ma comply with the microstructural observations made on leucogranite mylonites show that the activity of the Pradines fault is coeval with granite emplacement. We propose that once the magma, reached the upper crust through the Pradines dextral Wrench fault, it spread-out laterally into the sub horizontal micaschist foliation. The weak gravity anomaly below the Pradines fault, suggests that narrow and unstable feeding zones disappeared after the passage of magma.
Steven Bellens - One of the best experts on this subject based on the ideXlab platform.
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a hybrid pose Wrench control framework for quadrotor helicopters
International Conference on Robotics and Automation, 2012Co-Authors: Steven Bellens, Joris De Schutter, Herman BruyninckxAbstract:This paper presents a hybrid pose / Wrench control framework for quadrotor helicopters, allowing direct contact of the quadrotor with its environment and stable motion while in contact. The presented work explicitly takes into account the quadrotor's underactuation and utilizes a Wrench estimator, able to estimate the Wrench generated by the quadrotor using only quadrotor inputs and pose measurements. Experimental results of the quadrotor in pose and hybrid pose-Wrench control mode are presented, showing stable behaviour while moving in contact. Whereas a lot of research nowadays is focused mainly on free-flight applications, stable and robust Wrench control of quadrotors in direct contact with their environment, opens up new application areas for this class of flying robots.
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ICRA - A hybrid pose / Wrench control framework for quadrotor helicopters
2012 IEEE International Conference on Robotics and Automation, 2012Co-Authors: Steven Bellens, Joris De Schutter, Herman BruyninckxAbstract:This paper presents a hybrid pose / Wrench control framework for quadrotor helicopters, allowing direct contact of the quadrotor with its environment and stable motion while in contact. The presented work explicitly takes into account the quadrotor's underactuation and utilizes a Wrench estimator, able to estimate the Wrench generated by the quadrotor using only quadrotor inputs and pose measurements. Experimental results of the quadrotor in pose and hybrid pose-Wrench control mode are presented, showing stable behaviour while moving in contact. Whereas a lot of research nowadays is focused mainly on free-flight applications, stable and robust Wrench control of quadrotors in direct contact with their environment, opens up new application areas for this class of flying robots.
Flavien Choulet - One of the best experts on this subject based on the ideXlab platform.
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Relationships between magmatism and extension along the Autun–La Serre fault system in the Variscan Belt of the eastern French Massif Central
International Journal of Earth Sciences, 2012Co-Authors: Flavien Choulet, Olivier Fabbri, Michel Faure, Patrick MonieAbstract:The ENE–WSW Autun Shear Zone in the northeastern part of the French Massif Central has been interpreted previously as a dextral Wrench fault. New field observations and microstructural analyses document a NE–SW stretching lineation that indicates normal dextral motions along this shear zone. Further east, similar structures are observed along the La Serre Shear Zone. In both areas, a strain gradient from leucogranites with a weak preferred orientation to highly sheared mylonites supports a continuous Autun–La Serre fault system. Microstructural observations, and shape and lattice-preferred orientation document high-temperature deformation and magmatic fabrics in the Autun and La Serre granites, whereas low- to intermediate-temperature fabrics characterize the mylonitic granite. Electron microprobe monazite geochronology of the Autun and La Serre granites yields a ca. 320 Ma age for pluton emplacement, while mica ^40Ar-^39Ar datings of the Autun granite yield plateau ages from 305 to 300 Ma. The ca. 300 Ma ^40Ar-^39Ar ages, obtained on micas from Autun and La Serre mylonites, indicate the time of the mylonitization. The ca. 15-Ma time gap between pluton emplacement and deformation along the Autun–La Serre fault system argue against a synkinematic pluton emplacement during late orogenic to postorogenic extension of the Variscan Belt. A ductile to brittle continuum of deformation is observed along the shear zone, with Lower Permian brittle faults controlling the development of sedimentary basins. These results suggest a two-stage Late Carboniferous extension in the northeastern French Massif Central, with regional crustal melting and emplacement of the Autun and La Serre leucogranites around 320 Ma, followed, at 305–295 Ma, by ductile shearing, normal brittle faulting, and subsequent exhumation along the Autun–La Serre transtensional fault system.
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Relationships between magmatism and extension along the Autun–La Serre fault system in the Variscan Belt of the eastern French Massif Central
International Journal of Earth Sciences, 2012Co-Authors: Flavien Choulet, Olivier Fabbri, Michel Faure, Patrick MonieAbstract:The ENE–WSW Autun Shear Zone in the northeastern part of the French Massif Central has been interpreted previously as a dextral Wrench fault. New field observations and microstructural analyses document a NE–SW stretching lineation that indicates normal dextral motions along this shear zone. Further east, similar structures are observed along the La Serre Shear Zone. In both areas, a strain gradient from leucogranites with a weak preferred orientation to highly sheared mylonites supports a continuous Autun–La Serre fault system. Microstructural observations, and shape and lattice-preferred orientation document high-temperature deformation and magmatic fabrics in the Autun and La Serre granites, whereas low- to intermediate-temperature fabrics characterize the mylonitic granite. Electron microprobe monazite geochronology of the Autun and La Serre granites yields a ca. 320 Ma age for pluton emplacement, while mica ^40Ar-^39Ar datings of the Autun granite yield plateau ages from 305 to 300 Ma. The ca. 300 Ma ^40Ar-^39Ar ages, obtained on micas from Autun and La Serre mylonites, indicate the time of the mylonitization. The ca. 15-Ma time gap between pluton emplacement and deformation along the Autun–La Serre fault system argue against a synkinematic pluton emplacement during late orogenic to postorogenic extension of the Variscan Belt. A ductile to brittle continuum of deformation is observed along the shear zone, with Lower Permian brittle faults controlling the development of sedimentary basins. These results suggest a two-stage Late Carboniferous extension in the northeastern French Massif Central, with regional crustal melting and emplacement of the Autun and La Serre leucogranites around 320 Ma, followed, at 305–295 Ma, by ductile shearing, normal brittle faulting, and subsequent exhumation along the Autun–La Serre transtensional fault system.
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Relationships between magmatism and extension along the Autun-La Serre fault system in the Variscan Belt of the eastern French Massif Central
International Journal of Earth Sciences, 2012Co-Authors: Flavien Choulet, Olivier Fabbri, Michel Faure, Patrick MonieAbstract:The ENE-WSW Autun Shear Zone in the northeastern part of the French Massif Central has been interpreted previously as a dextral Wrench fault. New field observations and microstructural analyses document a NE-SW stretching lineation that indicates normal dextral motions along this shear zone. Further east, similar structures are observed along the La Serre Shear Zone. In both areas, a strain gradient from leucogranites with a weak preferred orientation to highly sheared mylonites supports a continuous Autun-La Serre fault system. Microstructural observations, and shape and lattice-preferred orientation document high-temperature deformation and magmatic fabrics in the Autun and La Serre granites, whereas low- to intermediate-temperature fabrics characterize the mylonitic granite. Electron microprobe monazite geochronology of the Autun and La Serre granites yields a ca. 320 Ma age for pluton emplacement, while mica 40Ar-39Ar datings of the Autun granite yield plateau ages from 305 to 300 Ma. The ca. 300 Ma 40Ar-39Ar ages, obtained on micas from Autun and La Serre mylonites, indicate the time of the mylonitization. The ca. 15-Ma time gap between pluton emplacement and deformation along the Autun-La Serre fault system argue against a synkinematic pluton emplacement during late orogenic to postorogenic extension of the Variscan Belt. A ductile to brittle continuum of deformation is observed along the shear zone, with Lower Permian brittle faults controlling the development of sedimentary basins. These results suggest a two-stage Late Carboniferous extension in the northeastern French Massif Central, with regional crustal melting and emplacement of the Autun and La Serre leucogranites around 320 Ma, followed, at 305-295 Ma, by ductile shearing, normal brittle faulting, and subsequent exhumation along the Autun-La Serre transtensional fault system.
Joris De Schutter - One of the best experts on this subject based on the ideXlab platform.
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a hybrid pose Wrench control framework for quadrotor helicopters
International Conference on Robotics and Automation, 2012Co-Authors: Steven Bellens, Joris De Schutter, Herman BruyninckxAbstract:This paper presents a hybrid pose / Wrench control framework for quadrotor helicopters, allowing direct contact of the quadrotor with its environment and stable motion while in contact. The presented work explicitly takes into account the quadrotor's underactuation and utilizes a Wrench estimator, able to estimate the Wrench generated by the quadrotor using only quadrotor inputs and pose measurements. Experimental results of the quadrotor in pose and hybrid pose-Wrench control mode are presented, showing stable behaviour while moving in contact. Whereas a lot of research nowadays is focused mainly on free-flight applications, stable and robust Wrench control of quadrotors in direct contact with their environment, opens up new application areas for this class of flying robots.
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ICRA - A hybrid pose / Wrench control framework for quadrotor helicopters
2012 IEEE International Conference on Robotics and Automation, 2012Co-Authors: Steven Bellens, Joris De Schutter, Herman BruyninckxAbstract:This paper presents a hybrid pose / Wrench control framework for quadrotor helicopters, allowing direct contact of the quadrotor with its environment and stable motion while in contact. The presented work explicitly takes into account the quadrotor's underactuation and utilizes a Wrench estimator, able to estimate the Wrench generated by the quadrotor using only quadrotor inputs and pose measurements. Experimental results of the quadrotor in pose and hybrid pose-Wrench control mode are presented, showing stable behaviour while moving in contact. Whereas a lot of research nowadays is focused mainly on free-flight applications, stable and robust Wrench control of quadrotors in direct contact with their environment, opens up new application areas for this class of flying robots.
