Interface Issues in Hardware-In-the-Loop Simulation for Spacecraft On-orbit Docking

Abstract

This paper presents an idea on the simulation/hardware interface of Hardware-In-the-Loop (HIL) simulation for spacecraft on-orbit docking. The obstacles that hinder the design of the HIL simulation system are discussed. Then the design criteria of the HIL simulation system are presented based on them. Since the practical HIL simulation system for on-orbit docking is very complicated, the verification about the criteria was done on 1 Degree-Of-Freedom (DOF) case with the nonlinear docking mechanism model. To put the design criteria into practice, the two-degree-of-freedom control structure is required as a control structure for the HIL simulation system for on-orbit docking. The relation ship between the distortion of the HIL simulation and the transfer characteristics of the simulation/hardware interface is qualitatively discussed. The simulation results on 1 DOF case demonstrated that the ideas and the methods discussed above are feasible and practical.

In Silico Evaluation Platform for Artificial Pancreatic β-Cell Development—A Dynamic Simulator for Closed-Loop Control with Hardware-in-the-Loop

“…The concept of HIL simulation is not a new one and has been used in the development of control algorithms in the energy, 1 automobile, [2][3][4] manufacturing, 5 and aviation 6,7 industries. The development of an artificial ␤-cell is a complex task requiring HIL simulation studies in order to ensure system reliability and safety, which is integrated as part of the validation and verification of the system for regulatory purposes 8 and which offers a way to assess the robustness of the control algorithm in a real-time implementation.…”