The fact that two antipodal points in the quaternion characterize the same physical attitude
depicts that the design of the global attitude control system is uneasy. This study deals with a …

The operation and accomplishment of a satellite's mission depend on its capacity to control
its attitude. A rotation matrix parameterization, such as a (unit) quaternion, is frequently used …

This paper studies an attitude control system design based on modified Rodrigues
parameters feedback. It employs a linear continuous sliding mode controller. The sliding …

Wheel drive electronics is a brushless direct current motor control module attached to the
reaction wheel used to control the satellites' attitude. At the development stage, this module …

Quaternion-based attitude control system design and analysis is challenging due to fact that
a physical attitude is represented by two points in a quaternion. It then implies the existence …

In the design of attitude control, rotational motion of the spacecraft is usually considered as a
rotation of rigid body. Rotation matrix parameterization using quaternion can represent …

Nonlinearity of dynamics and kinematics, difficulty in stability guarantee and unwinding
phenomenon problem make quaternion-based attitude control system design is a non trivial …

The operation and accomplishment of a satellite's mission depend on its capacity to control
its attitude. A rotation matrix parameterization, such as a (unit) quaternion, is frequently used …

Aiming at the turning problem of missile after vertical launch, this paper takes the vector
nozzle as thrust vector mechanism to study the optimal turning law with variable time. Firstly …