Exact(5)
Unlike most previous control approaches, it doesn't need thrust model and the thruster control signal is considered as the input of control system directly.
With this high-fidelity thrust model, the relative state is then propagated to the next arc by numerical integration using a complete Solar System model.
The paper presents the general equations that describe the elliptic orbit maintenance in terms of both spacecraft attitude and performance requirements, when a refined thrust model (recently proposed for the preliminary mission design) is taken into account.
The spacecraft orbit is maintained by adjusting its propulsive acceleration modulus, whose value is estimated using a thrust model that takes into account a variation of the propulsive performance with the sail attitude.
A quasistatic thrust model is derived through a theoretical approach; estimation of the model parameters for a Ocean Explorer class AUV is pursued on real data collected during at sea tests.
Similar(55)
Depending on the engine thrust level the maneuvers are modeled either as impulsive velocity changes (impulsive modelling) or as short duration boosts (high thrust modelling) or as long duration boosts (low thrust modelling).
In general, an accurate thrust modeling is very difficult to establish for underwater robot in practice.
He says that art and the history of technology are often marked by ruptures, and most histories overlook moments where "deep fusion" occurs: "I felt that we need now another model for cultural consciousness, other than the majestic forward and upward thrusting model of evolution.
To establish the thrust force model, a magnetic flux linkage calculation algorithm is applied.
To be able to perform such run-up calculations, a computationally efficient thrust bearing model is mandatory.
Thus, the thrust force model including end effects and identification algorithms are proved to be valid and practical.
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