Search

Your search keyword '"Jinjun Shan"' showing total 8 results
Start Over Author "Jinjun Shan" Journal journal of guidance, control, and dynamics
8 results on '"Jinjun Shan"'

1. Cooperative Transportation of a Flexible Payload Using Two Quadrotors

Author

Jinjun Shan, Ti Chen, and Hugh H. T. Liu

Subjects
Space and Planetary Science, Control and Systems Engineering, Computer science, business.industry, Payload, Applied Mathematics, Aerospace Engineering, Electrical and Electronic Engineering, Aerospace engineering, business
Published
2021

2. Flexible Structure Vibration Control Using Double-Gimbal Variable-Speed Control Moment Gyros

Author

Shiyuan Jia and Jinjun Shan

Subjects
020301 aerospace & aeronautics, 0209 industrial biotechnology, Electronic speed control, Computer simulation, Computer science, Applied Mathematics, Vibration control, Aerospace Engineering, 02 engineering and technology, Gimbal, Finite element method, Moment (mathematics), 020901 industrial engineering & automation, 0203 mechanical engineering, Space and Planetary Science, Control and Systems Engineering, Control theory, Electrical and Electronic Engineering, Steering law, Actuator
Abstract

This paper studies the dynamics and control of a flexible space structure using double-gimbal variable-speed control moment gyros (DGVSCMGs). The DGVSCMGs are mounted on the flexible structure as a...

Published
2021

3. Koopman-Operator-Based Attitude Dynamics and Control on SO(3)

Author

Jinjun Shan and Ti Chen

Subjects
020301 aerospace & aeronautics, 0209 industrial biotechnology, Computer science, Applied Mathematics, Physics::Physics Education, Aerospace Engineering, Observable, 02 engineering and technology, Operator theory, Algebraic Riccati equation, Attitude control, LTI system theory, Nonlinear system, 020901 industrial engineering & automation, Operator (computer programming), 0203 mechanical engineering, Space and Planetary Science, Control and Systems Engineering, Applied mathematics, Electrical and Electronic Engineering, Quaternion
Abstract

This paper presents an attitude control method based on Koopman operator theory. A set of observables is discovered to represent the nonlinear attitude dynamics on SO(3) using an infinite-dimension...

Published
2020

4. Observer-Based Robust Control for Uncertain Euler–Lagrange Systems with Input Delay

Author

Shiyuan Jia and Jinjun Shan

Subjects
0209 industrial biotechnology, Computer simulation, Computer science, Applied Mathematics, Numerical analysis, 020208 electrical & electronic engineering, Aerospace Engineering, 02 engineering and technology, Active disturbance rejection control, Nonlinear system, 020901 industrial engineering & automation, Euler lagrange, Space and Planetary Science, Control and Systems Engineering, Control theory, Full state feedback, 0202 electrical engineering, electronic engineering, information engineering, Electrical and Electronic Engineering, Observer based, Robust control
Published
2020

5. Capturing an Asteroid via Triangular Libration Points

Author

Jinjun Shan, Yuying Liang, Ming Xu, and Shijie Xu

Subjects
Physics, 020301 aerospace & aeronautics, 0209 industrial biotechnology, Applied Mathematics, Astronomical unit, Chaotic, Aerospace Engineering, Lagrangian point, Motion (geometry), Geometry, 02 engineering and technology, Physics::Geophysics, 020901 industrial engineering & automation, Asteroid capture, 0203 mechanical engineering, Space and Planetary Science, Control and Systems Engineering, Asteroid, Astrophysics::Earth and Planetary Astrophysics, Physics::Chemical Physics, Electrical and Electronic Engineering, Orbital maneuver
Abstract

This paper develops a new asteroid capture mechanism via triangular libration points based on their stable structure and chaotic motion nearby. Different from collinear libration points, the triang...

Published
2020

6. Rotation-Matrix-Based Attitude Tracking for Multiple Flexible Spacecraft with Actuator Faults

Author

Ti Chen and Jinjun Shan

Subjects
Flexible spacecraft, 020301 aerospace & aeronautics, 0209 industrial biotechnology, Control algorithm, Computer science, Applied Mathematics, Vibration control, Aerospace Engineering, 02 engineering and technology, Rotation matrix, Tracking (particle physics), 020901 industrial engineering & automation, 0203 mechanical engineering, Space and Planetary Science, Control and Systems Engineering, Control theory, Electrical and Electronic Engineering, Actuator, Quaternion
Published
2019

7. Reliability-Based Soft Landing Trajectory Optimization near Asteroid with Uncertain Gravitational Field

Author

Jinjun Shan and Yuan Ren

Subjects
Physics, Optimization problem, Soft landing, Applied Mathematics, Aerospace Engineering, Trajectory optimization, Optimal control, Maximum principle, Gravitational field, Space and Planetary Science, Control and Systems Engineering, Control theory, Trajectory, Boundary value problem, Electrical and Electronic Engineering
Abstract

This paper investigates a reliability-based trajectory optimization method for the design of soft landing trajectory on an irregular shape asteroid with highly uncertain gravitational field. First, the gravitational field of the irregular asteroid is described by the finite particle model. Second, to avoid the singularity and reduce the sensitivity, the original finite particle model is modified to an “N-body/two-body” switching dynamic model. The trajectory optimization problem in the switching dynamic model is summarized as an optimal control problem and is then transformed into a two-point boundary value problem by Pontryagin’s maximum principle. By solving the two-point boundary value problem with a homotopic continuation procedure, the nominal optimal trajectory is obtained. Third, the uncertainty caused by the nonuniform mass distribution of the asteroid is considered. With high uncertainty, the deterministic optimal control problem becomes a parameter optimization problem with reliability constrain...

Published
2015

8. Vibration Control Using Input Shaping and Adaptive Positive Position Feedback

Author

Jinjun Shan and Ryan R. Orszulik

Subjects
Engineering, business.industry, Piezoelectric sensor, Applied Mathematics, Vibration control, Aerospace Engineering, Control engineering, System dynamics, Vibration, Space and Planetary Science, Control and Systems Engineering, Input shaping, Control theory, Active vibration control, Electrical and Electronic Engineering, Actuator, business
Abstract

DOI: 10.2514/1.52287 This paper presents a vibration control strategy for a flexible manipulator with a collocated piezoelectric sensor/ actuator pair. Dynamic modeling of the flexible manipulator is first shown, and then a control law is developed. The proposed vibration controller combines the input shaping technique with multimode adaptive positive position feedback. An adaptive parameter estimator based on the recursive least-square method is developed to update the system’s natural frequencies, which are used by the adaptive positive position feedback. A proportional-derivative controller is combined with the proposed vibration controller to suppress vibration while slewing the manipulator. Simulation results are presented to illustrate the efficacy of the proposed controller.

Published
2011

Catalog

Books, media, physical & digital resources
See catalog results