Modeling and path-following control of a vector-driven stratospheric satellite

Zheng, Zewei; Chen, Tian; Xu, Ming; Zhu, Ming

doi:10.1016/j.asr.2016.02.004

Cited by 11 publications

(3 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using only 2 control inputs to control the full 3 DOF means that it is an underactuated control problem. Since the stabilization problem system does not satisfy Brockett's condition (Brockett (1983)), a smooth, time-invariant, state feedback control algorithm cannot be utilized for stabilization to a set-point (Pettersen and Fossen (2000); Do et al (2002); Zheng et al (2013Zheng et al ( , 2016). Lowering the output space from full 3 DOF to reduced 2 DOF ensures that the control problem is no longer of an underactuated character.…”

Section: Introductionmentioning

confidence: 99%

Degraded Planary Tracking Control of an Omnidirectional Vectored-Thruster Aerostat

et al. 2019

View full text Add to dashboard Cite

The problem of horizontal-plane tracking control of an omni-directional, four vectored-thruster aerostat when subjected to actuator failure is considered. The actuator failures result in the aerostat becoming underactuated, so it can only effect surge force and pure yaw moment about the body centre. To achieve accurate position control in the horizontal plane, direct position control is used instead of heading control.This mode of controller is called degraded tracking control in contrast to full authority control of the overactuated four vectored-thruster aerostat. This degraded tracking controller uses commanded yaw rate to track lateral position, and yaw moment to eliminate lateral position error, therefore yaw angle is not directly controlled. To guarantee the stability of the yaw motion, a Virtual Reference Point (VRP) tracking strategy is proposed, where the VRP is used instead of the body center (BC) in position tracking. The VRP generates a negative compensated force in the surge direction which makes the side-force and yaw moment have the same sign and so ensure that the aerostat is in a stable tracking configuration. Meanwhile the VRP also decreases the transmission ratio of commanded yaw rate to commanded lateral velocity, making the aerostat's yaw motion vary slowly during transitional phase, so steady position tracking is obtained.

show abstract

Section: Introductionmentioning

confidence: 99%

Degraded Planary Tracking Control of an Omnidirectional Vectored-Thruster Aerostat

et al. 2019

View full text Add to dashboard Cite

show abstract

“…3 Therefore, the research on a stratospheric satellite has been attracting attention increasingly. Researchers made several researches on stratospheric satellites, including modeling, 4 thermal characteristics, 5 propeller, 6 and other related technologies.…”

Section: Introductionmentioning

confidence: 99%

Path following of a stratospheric satellite by the aid of wind currents

Kang

Zheng

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part G:

Self Cite

View full text Add to dashboard Cite

Path-following controller of a stratospheric satellite is designed under circumstances of wind currents utilization, parameter uncertainty, input value errors, and external disturbances. In order to reduce the energy consumption of the stratospheric satellite, the stratospheric east (west) wind currents are utilized by the stratospheric satellite to track the desired path. To utilize the wind currents, an air balloon as well as altitude control model are designed. Fuzzy disturbances observers are presented to estimate uncertainties and external disturbances. Input values are quantized by logarithmic quantizers. Rigorous stability analysis proves that path-following errors of the stratospheric satellite can be reduced to zero, and all closed-loop signals are uniformly bounded regardless of uncertainties and disturbances. Simulation results show that the stratospheric satellite can track the desired path well and the proposed control strategy can reduce the energy consumption of the stratospheric satellite effectively.

show abstract

“…Many researchers have conducted studies on the traditional control of an airship (2)(3)(4) . Presently, attention is centred on the composite control of stratospheric airships of multiactuators.…”

Section: Introductionmentioning

confidence: 99%

Composite control system of hybrid-driven mid-altitude airship

et al. 2017

View full text Add to dashboard Cite

In general, an airship is equipped with hybrid-heterogeneous actuators: the aerodynamic surfaces, the vectored propellers and the buoyant ballonets. The aerodynamic surfaces have high efficiency in attitude control at high speed. However, vectored propellers are also introduced here for attitude control under the special working condition of low airspeed. Due to the lower thrust-to-weight ratio, the composite control of hybrid-heterogeneous actuators is the primary object in controller design for an airship. In composite attitude control, first the attitude moment allocation between aerodynamic control surfaces and vectored propellers is designed according to different dynamic airspeed, to achieve the smooth motion transition from low to high airspeed, then the weighted generalised inverse (WGI) is used to design the reconfigurable actuator allocation among the homogeneous multi-actuators, where the authority of every actuator can be decided by setting the corresponding value of the weight matrix, thus the control law is unchanged under different actuator configurations. Taking the mid-altitude airship as an example, the simulations of position control, trace tracking and altitude control are provided. Simulation results demonstrate that the attitude moments allocation obtains moment distribution between the aerodynamic surfaces and the vectored propellers under different airspeeds; the reconfigurable actuator allocation achieves a good distribution and reconfiguration among homogeneous actuators, thereby enhancing the reliability of the control system.

show abstract

Modeling and path-following control of a vector-driven stratospheric satellite

Cited by 11 publications

References 32 publications

Degraded Planary Tracking Control of an Omnidirectional Vectored-Thruster Aerostat

Degraded Planary Tracking Control of an Omnidirectional Vectored-Thruster Aerostat

Path following of a stratospheric satellite by the aid of wind currents

Composite control system of hybrid-driven mid-altitude airship

Contact Info

Product

Resources

About