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- W379483403 abstract "Software design for digital computer simulation of the dynamics of flexible spacecraft equipped with actuators and sensors, should take into account two properties of the overall system: (i) s.ampled-data control of the spacecraft leads to discontinuous inputs (forcing functions) in the differential equations of motion, thereby requiring modification of the integration algorithm whenever an input change occurs, and (ii) numerical simulation of the structural vibrations in the higher frequency range requires small integration steps, thereby leading to long computer running times.The system of differential equations which describes the dynamics, is transformed sequentially to a modified modal form. The resulting system displays maximum decoupling between the system elements. It can be integrated analytically. Thus, exact difference equations are obtained for the numerical simulation. The associated time interval is determined mainly by measurement times, control update times, and measurement- and system noise simulation requirements.Use of the system of difference equations instead of the differential equations equations is expected to lead to an increase in accuracy. Also, the execution time of the numerical simulation is expected to decrease considerably, especially for flexible spacecraft with high model frequencies." @default.
- W379483403 created "2016-06-24" @default.
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- W379483403 date "1983-10-05" @default.
- W379483403 modified "2023-09-27" @default.
- W379483403 title "Towards digital computer simulation of the dynamics of flexible spacecraft" @default.
- W379483403 hasPublicationYear "1983" @default.
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