IEEE Organizations related to Quaternions

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Conferences related to Quaternions

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2020 IEEE 23rd International Conference on Information Fusion (FUSION)

The International Conference on Information Fusion is the premier forum for interchange of the latest research in data and information fusion, and its impacts on our society. The conference brings together researchers and practitioners from academia and industry to report on the latest scientific and technical advances.


2020 IEEE International Conference on Image Processing (ICIP)

The International Conference on Image Processing (ICIP), sponsored by the IEEE SignalProcessing Society, is the premier forum for the presentation of technological advances andresearch results in the fields of theoretical, experimental, and applied image and videoprocessing. ICIP 2020, the 27th in the series that has been held annually since 1994, bringstogether leading engineers and scientists in image and video processing from around the world.


2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.


ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

The ICASSP meeting is the world's largest and most comprehensive technical conference focused on signal processing and its applications. The conference will feature world-class speakers, tutorials, exhibits, and over 50 lecture and poster sessions.


IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium

All fields of satellite, airborne and ground remote sensing.


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Periodicals related to Quaternions

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Most published Xplore authors for Quaternions

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Xplore Articles related to Quaternions

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C++ objects for beam physics

Conference Record of the 1991 IEEE Particle Accelerator Conference, 1991

A description is presented of a few C++ classes and applications that have been written at Fermilab for problems in accelerator physics. Described are: MXYZPTLK, beamline, AESOP, and canvas.<>


Research on the measurement in RVD based on dual quaternion

2011 Chinese Control and Decision Conference (CCDC), 2011

The measurement of the final approaching part in Rendezvous and Dock are all based on computer vision, the basic ideas are: In the close part utilizing the camera to catch the motion parameters and the traditional method is a process of solving the rotation matrix and the translation vector. In this method the imaging is the most important part. The ...


Output attitude control of flexible spacecraft from quaternion measures: a passivity approach

Proceedings of the 37th IEEE Conference on Decision and Control (Cat. No.98CH36171), 1998

A dynamic controller is derived for a spacecraft with flexible appendages. The control aim is to design a control law that, using only attitude measures, allows for performing large angle manoeuvres. The approach is based on passivity concepts and the resulting controller ensures the asymptotic satisfaction of the control objectives and gives also estimates of the modal variables converging to ...


A coupled nonlinear spacecraft attitude controller/observer with an unknown constant gyro bias

Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228), 2001

A nonlinear control scheme for attitude control of a spacecraft is combined with a nonlinear gyro bias observer for the case of constant gyro bias. A persistency of excitation analysis shows the observer bias estimates converge to the true bias values exponentially fast. The resulting coupled, closed loop dynamics are proven by a Lyapunov analysis to be globally stable, with ...


Prescribed Performance Based Finite-Time Attitude Tracking Control for Rigid Spacecraft

2018 Eighth International Conference on Information Science and Technology (ICIST), 2018

This paper investigates the attitude tracking control problem for rigid spacecraft with bounded external disturbance. By combing the terminal sliding- mode technique and the prescribed performance concept, a finite-time control scheme with sliding-mode surface constraint is proposed, whose structure is simpler than the conventional transformed error constraint methods. Then, a saturation function is introduced to the control scheme to eliminate ...


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Educational Resources on Quaternions

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IEEE.tv Videos

No IEEE.tv Videos are currently tagged "Quaternions"

IEEE-USA E-Books

  • C++ objects for beam physics

    A description is presented of a few C++ classes and applications that have been written at Fermilab for problems in accelerator physics. Described are: MXYZPTLK, beamline, AESOP, and canvas.<>

  • Research on the measurement in RVD based on dual quaternion

    The measurement of the final approaching part in Rendezvous and Dock are all based on computer vision, the basic ideas are: In the close part utilizing the camera to catch the motion parameters and the traditional method is a process of solving the rotation matrix and the translation vector. In this method the imaging is the most important part. The shortcomings of this method are the decomposition of the integrity for the rigid motion. In this paper, the dual quaternion is used. It overcomes the shortcomings of the former method, the rotation and translation relationship between the two coordinates is considered on the same time. Finally, the simulation shows the method.

  • Output attitude control of flexible spacecraft from quaternion measures: a passivity approach

    A dynamic controller is derived for a spacecraft with flexible appendages. The control aim is to design a control law that, using only attitude measures, allows for performing large angle manoeuvres. The approach is based on passivity concepts and the resulting controller ensures the asymptotic satisfaction of the control objectives and gives also estimates of the modal variables converging to the real values.

  • A coupled nonlinear spacecraft attitude controller/observer with an unknown constant gyro bias

    A nonlinear control scheme for attitude control of a spacecraft is combined with a nonlinear gyro bias observer for the case of constant gyro bias. A persistency of excitation analysis shows the observer bias estimates converge to the true bias values exponentially fast. The resulting coupled, closed loop dynamics are proven by a Lyapunov analysis to be globally stable, with asymptotically perfect tracking. The analysis is extended to consider the effects of noise in addition to the gyro bias. A simulation of the proposed observer-controller design is given for a rigid spacecraft tracking a specified, time-varying attitude sequence to illustrate the theoretical claims.

  • Prescribed Performance Based Finite-Time Attitude Tracking Control for Rigid Spacecraft

    This paper investigates the attitude tracking control problem for rigid spacecraft with bounded external disturbance. By combing the terminal sliding- mode technique and the prescribed performance concept, a finite-time control scheme with sliding-mode surface constraint is proposed, whose structure is simpler than the conventional transformed error constraint methods. Then, a saturation function is introduced to the control scheme to eliminate singularity, and the system performance in both the reaching phase and the ideal sliding-mode are studied. Stability analysis shows that the proposed control scheme can make the spacecraft tracking a time-varying desired signal with a finite-time convergence. The effectiveness of the attitude tracking control scheme is evaluated by numerical simulations.

  • Backstepping Control for Satellite Attitude Control Using Spherical Control Moment Gyro

    This paper proposes a design of a controller of the spherical control moment gyro (CMG) system that was developed gimballess structure. Generally, it is required to apply the complex steering law to CMG to avoid or pass the singularity that is caused by the gimbal system. Therefore, we proposed a novel system that can reduce the singularity by applying a sphere instead of the gimbal structure. The spherical rotor containing flywheel is driven by three pairs of omni wheels attached to DC motors. In our previous study, the effectivity of the proposed system has been confirmed. Then, this paper applied the backstepping controller to the spherical CMG system because the backstepping is useful control logic for the proposed system having a cascade structure. We designed the controller based on the redesign Lyapunov function, and the validity of the proposed controller is confirmed through numerical simulation.

  • Structure-adaptive vector median filter for impulse noise removal in color images

    A structure-adaptive vector median filter (SAVMF) for removal of impulse noise from color images is presented in this paper. A color image is represented in quaternion form, and then quaternion Fourier transform is employed to detect the dominant orientation of the pattern in a local neighborhood. Based on the local orientation and its strength, the size, shape and orientation of the support window of vector median filter (VMF) can be adaptively computed, and thus structure-adaptive VMF is implemented. Experimental results exhibit the validity of the proposed method by showing clearly performance improvements both in noise removal and in detail preservation, compared to other VMF-based vector filters.

  • Orientation singularity and orientation capability analysis of Stewart Platform based on unit quaternion

    Based on unit quaternion to represent the platform's orientation, the orientation singularity and orientation capability of the Stewart parallel mechanism are researched, and the singularities caused by Euler angles to represent are avoided. The expression and locus of orientation singularity of the mechanism are expressed. It can be shown that there is a singular free void in the initial-orientation around the origin. It is denoted that the minimum inscribed sphere of the orientation singularity locus can be searched inside the free void, and the sphere's radius is used to evaluate the orientation capability. Effects of geometric configuration of the mechanism and the position of the moving platform on the orientation capability are addressed.

  • An evolutionary algorithm for posture estimation of a three-dimensional object

    Recently, the automation of picking work has advanced in the factory for the reduction of labor costs. When picking work is automatic, it is very important to estimate posture of target components. Therefore, an algorithm to automatically estimate posture is expected. We propose an efficient method to improve Differential Evolution (DE). Then, we applied the proposal method and DE to experiment to estimate posture of each four three-dimensional (3-D) objects by using the 3-D CAD data. The experimental results show that the proposal method achieves high success rate and efficiency than DE.

  • Avatar kinematics modeling for telecollaborative virtual environments

    This paper introduces the application of a more efficient mathematical representation of the kinematics of avatars, or digital human beings, in telecollaborative virtual reality environments (VRE). The human head, torso and arms were modeled as a redundant eight-degree-of-freedom kinematics structure using an excellent alternative tool to transformation matrices, called dual quaternions. This approach achieves an extremely fast and accurate iterative algorithm that converges to one possible solution of this inverse kinematics problem. The method was implemented and tested in a CAVE Automatic Virtual Environment to demonstrate its performance in real time.



Standards related to Quaternions

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