Abstract

Due to costly space projects, affordable flight models and test prototypes are of incomparable importance in academic and research applications, for example, data acquisition and subsystems testing. In this regard, CanSat could be used as a low-cost, high-tech, and lightweight model. CanSat carrier launch system is a simple second-order aerospace system. Aerospace systems require the highest level of effective controller performance. Adding second-order integral and second-order derivative terms to proportional–integral–derivative controller leads to the elimination of steady-state errors and yields to a faster systems convergence. Moreover, sliding mode control is considered as a robust controller that has appropriate features to track. Thus, this article tends to present an adaptive hybrid of higher order proportional–integral–derivative and sliding mode control optimized by multi-objective genetic algorithm to control a CanSat carrier launch system.

Highlights

  • CanSat, a similar technology used in miniaturized satellites, is a type of autonomous space technology that is employed for research and educational purposes

  • The results obtained from applying the proposed controllers on the CanSat carrier launch system indicate the effective performance of the higher order controllers

  • The best point among all the output points of genetic algorithm (GA) from the viewpoints of two objective functions is selected as optimum design point

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Summary

Introduction

CanSat, a similar technology used in miniaturized satellites, is a type of autonomous space technology that is employed for research and educational purposes. In order to specify these control gains, Kosari et al used the Gaussian and triangular fuzzy membership functions to design fuzzy PID controllers for a CanSat carrier launch system.[2] They have implemented the genetic algorithm (GA) to optimize fuzzy parameters. The feedback linearization controller is defined as follows u à 1⁄4 À f ðX ; tÞ þ yd þ KT E ð12Þ It can be concluded from equation (13) that eðtÞ tends to zero when t tends to infinity which means y asymptotically tends to yd. The PI2IDD2, PI2ID, PIDD2, PID2, and PI2D controllers with input eðtÞ and outputs of u PI2 IDD2 ðtÞ, u PI2 IDðtÞ, u PIDD2 ðtÞ, u PID2 ðtÞ, and u PI2 DðtÞ are defined using the following equations "

TI eðtÞ dt þ
Objective function
Results and discussion
Conclusion
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