Comparison of Feedback and Feedforward Strategies for Active Structural-Acoustic Control of Broadband Sound Transmission Into a Cavity

Dozio, Lorenzo; Toso, Alessandro; Corbetta, Walter; Vigoni, Edoardo; Ghiringhelli, G.L.

doi:10.2514/6.2007-3575

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…RTAI is a patch to the Linux kernel that allows for the execution of real-time tasks in Linux [30,31]. The RTAI Linux solution is being widely exploited in several engineering areas [32][33][34][35]. In this work, we use RTAI Linux with a wide variety of hardware interfaces to include: wireless ad hoc radio communication using UDP, RS232 interface with the sensor suite and power system, and a PC/104 relay board for actuating compressed air nozzles.…”

Section: Light Weight (10 Kg)mentioning

confidence: 99%

Development and experimentation of LQR/APF guidance and control for autonomous proximity maneuvers of multiple spacecraft

2011

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Section: Light Weight (10 Kg)mentioning

confidence: 99%

Development and experimentation of LQR/APF guidance and control for autonomous proximity maneuvers of multiple spacecraft

2011

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“…RTAI is a patch to the Linux kernel that allows for the execution of real-time tasks in Linux (see [26,27]). The RTAI Linux solution is being widely exploited in several engineering areas (see [28][29][30][31]). In this work, we use RTAI Linux with a wide variety of hardware interfaces to include wireless ad-hoc radio communication using UDP, RS232 interface with the sensor suite and power system and a PC/104 relay board for actuating compressed air nozzles.…”

Section: Third Generation Spacecraft Simulators At the Spacecraft Robmentioning

confidence: 99%

Guidance Navigation and Control for Autonomous Multiple Spacecraft Assembly: Analysis and Experimentation

Bevilacqua

Romano

Curti

et al. 2011

International Journal of Aerospace Engineering

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This work introduces theoretical developments and experimental verification for Guidance, Navigation, and Control of autonomous multiple spacecraft assembly. We here address the in-plane orbital assembly case, where two translational and one rotational degrees of freedom are considered. Each spacecraft involved in the assembly is both chaser and target at the same time. The guidance and control strategies are LQR-based, designed to take into account the evolving shape and mass properties of the assembling spacecraft. Each spacecraft runs symmetric algorithms. The relative navigation is based on augmenting the target's state vector by introducing, as extra state components, the target's control inputs. By using the proposed navigation method, a chaser spacecraft can estimate the relative position, the attitude and the control inputs of a target spacecraft, flying in its proximity. The proposed approaches are successfully validated via hardware-in-the-loop experimentation, using four autonomous three-degree-of-freedom robotic spacecraft simulators, floating on a flat floor.

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“…20,21 The RTAI Linux solution is being widely exploited in several engineering areas. [22][23][24][25] In this work, we use RTAI Linux with a wide variety of hardware interfaces to include wireless ad-hoc radio communication using UDP, RS232 interface with the sensor suite and power system and a PC/104 relay board for actuating compressed air nozzles. RTAI Linux also allows for automatic generation of C code from Simulink ® models through Real-Time Workshop™ with the executable file for the onboard computers being created outside MATLAB ® by simple compilation of the C code.…”

Section: Figure 8 Ad-hoc Wireless Network At the Srl Test-bedmentioning

confidence: 99%

Laboratory Experimentation of Multiple Spacecraft Autonomous Assembly

Bevilacqua

Caprari

Hall

et al. 2009

AIAA Guidance, Navigation, and Control Conference

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This work introduces a novel approach and its experimental verification for propellant sub-optimal multiple spacecraft assembly via a Linear Quadratic Regulator (LQR). The attitude dynamics of the spacecraft are linearized at each time step, about the current state vector, and the relative dynamics between two spacecraft are assumed as a double integrator. This allows for implementation in real-time of a LQR that computes the optimal gain matrix depending on the current phase of the spacecraft's mission. As a result, both the attitude and position are sub-optimally controlled. The presented logic compensates for the structural evolution related to an incremental assembly by updating the system's dynamics matrices. The actuators' reallocation and command of the assembled structure is dealt with through inter-robot wireless ad-hoc communication.

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Comparison of Feedback and Feedforward Strategies for Active Structural-Acoustic Control of Broadband Sound Transmission Into a Cavity

Cited by 4 publications

References 7 publications

Development and experimentation of LQR/APF guidance and control for autonomous proximity maneuvers of multiple spacecraft

Development and experimentation of LQR/APF guidance and control for autonomous proximity maneuvers of multiple spacecraft

Guidance Navigation and Control for Autonomous Multiple Spacecraft Assembly: Analysis and Experimentation

Laboratory Experimentation of Multiple Spacecraft Autonomous Assembly

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