21 citations · 57 across the 27 of their papers we have counts for
9 papers · 1 filter
Output Feedback Backup Control Barrier Functions: Safety Guarantees Under Input Bounds and State Estimation Error
David E. J. van Wijk, Tamas G. Molnar, Samuel Coogan +3
Guaranteeing the safety of controllers is vital for real-world applications, but is markedly difficult when the states are not perfectly known and when the control inputs are bound…
Uncertainty Estimators for Robust Backup Control Barrier Functions
David E. J. van Wijk, Ersin Das, Anil Alan +5
Designing safe controllers is crucial and notoriously challenging for input-constrained safety-critical control systems. Backup control barrier functions offer an approach for the…
Safe Multi-agent Satellite Servicing with Control Barrier Functions
Deep Parikh, David van Wijk, Manoranjan Majji
The use of control barrier functions under uncertain pose information of multiple small servicing agents is analyzed for a satellite servicing application. The application consists…
Covariance Analysis of Attitude and Angular Rate Estimation using Accelerometers
Koya Yamamoto, Patrick Kelly, Manoranjan Majji +1
In this work a method for using accelerometers for the determination of angular velocity and acceleration is presented. Minimum sensor requirements and insights into how an array o…
Pose estimation of CubeSats via sensor fusion and Error-State Extended Kalman Filter
Deep Parikh, Manoranjan Majji
A pose estimation technique based on error-state extended Kalman that fuses angular rates, accelerations, and relative range measurements is presented in this paper. An unconstrain…
Proximity operations of CubeSats via sensor fusion of ultra-wideband range measurements with rate gyroscopes, accelerometers and monocular vision
Deep Parikh, Hasnain Khowaja, Ravi Kumar Thakur +1
A robust pose estimation algorithm based on an extended Kalman filter using measurements from accelerometers, rate gyroscopes, monocular vision and ultra-wideband radar is presente…
Estimation of inertial properties of a rigid structure maneuvered by satellite modules
Deep Parikh, Manoranjan Majji
The LASR Laboratory is investigating the use of free-flying spacecraft modules in several on-orbit, servicing and manufacturing (OSAM) activities. Previous work consists of the sys…
Disturbance-Robust Backup Control Barrier Functions: Safety Under Uncertain Dynamics
David E. J. van Wijk, Samuel Coogan, Tamas G. Molnar +2
Obtaining a controlled invariant set is crucial for safety-critical control with control barrier functions (CBFs) but is non-trivial for complex nonlinear systems and constraints.…
Integrating Structure, Information Architecture and Control Design: Application to Tensegrity Systems
Raman Goyal, Manoranjan Majji, Robert E. Skelton
A novel unified approach to jointly optimize structural design parameters, actuator and sensor precision and controller parameters is presented in this paper. The joint optimizatio…