UAV Fault Detection Methods, State-of-the-Art

Round 1

Reviewer 1 Report

The paper’s subject is relevant because UAVs have been applied in different areas intensively. The problem of monitoring is one of them Therefore the survey of the applications in some fixed areas is welcome. The review and survey preparation is a difficult problem, of course. Because every researcher has another point of view on the problem of UAVs application. In general, I have positive opinions of this paper. But I’d like to recommend authors consider the short analysis of the drone’s applications because the application aspects have a great influence on the UAV reliability and detection of faults. Some surveys and reviews of UAVs application can be used:

o   Smith, M.L.; Smith, L.N.; Hansen, M.F. The quiet revolution in machine vision-a state-of-the-art survey paper, including historical review, perspectives, and future directions. Comput. Ind. 2021, 130, 103472.

o   Mohan, M.; Richardson, G.; et al. UAV-Supported Forest Regeneration: Current Trends, Challenges and Implications. Remote Sens. 2021, 13, 2596.

o   Mukhamediev, R.I.; Symagulov, A.; et al. Review of Some Applications of Unmanned Aerial Vehicles Technology in the Resource-Rich Country. Appl. Sci. 2021, 11, 10171.

o   Agarwal, A.; Kumar, S.; Singh, D. Development of Neural Network Based Adaptive Change Detection Technique for Land Terrain Monitoring with Satellite and Drone Images. Def. Sci. J. 2019, 69, 47–480.

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

This review article presents recent 5 research works on fault detection on unmanned flying systems.

Up to my own reading, the paper is well-written. However the following issues need to be addressed in the revised version.

(1) the contribution of this paper should be listed one by one in the end of Introduction section.

(2)  the content of this paper needs to be further enriched, some related literature was not included in the current version such as event-triggered adaptive fault-tolerant sybchronizaton tracking control for multiple 6-dof fixed wing UAVs; distributed coordinated control for fixed-wing UAVs with dynamic event-triggered communication.

(3) the language needs to be polished.

(4) future research direction needs to be added. 

Author Response

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Reviewer 3 Report

Dear authors,

The manuscript addresses a very important topic in the field of UAV applications. However, the text structure needs to be organized, specifically the figures and tables that are presented throughout the manuscript. All my comments are included in the pdf version.

Comments for author File: Comments.pdf

Author Response

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Author Response File: Author Response.pdf

Reviewer 4 Report

 

The authors have presented a very interesting article on aerodynamic parameter identification, actuator fault diagnosis and intelligent control for UAVs

The article is a review article. The review article presents recent research work on fault detection in unmanned aircraft systems However, although the article does not have a "major scientific novelty," it may be of great interest to MDPI's "Drones" readers.

 

 However, for the article to be published, the authors should take into account the following factual and editorial comments.

 In particular:

1. Introduction

>> line 31<< Why did the authors base the various steps of fault detection and diagnosis (FDD) mainly on the work of [11]? This refers to Figure 1 ?

This is not wrong, but it should be explained.

 >>Table 4. Research Works<<

 

 Why did the authors choose only these attributes, parameters?

 

Faulty part / Used methods/  UAV type/   Testof performing/

 Did the authors consider any others?

Chapter 5 Discussion should be changed to 5. Conclusions 

And also it should be numbered 6.

On the other hand, Chapter 5 Discussion should be placed before Conclusions.

 

The structure of writing is improved in accordance with IMRAD-C, namely Introduction, Methods, Results and Discussion, Conclusion. So it's clearer.
In the results and disscussion section, comparative data from previous research is added.

In conclusion, I think the article is needed and contributes very much to scientific studies on UAVs-from the point of view of drone damage

 

 

Author Response

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Author Response File: Author Response.pdf

Round 2

Reviewer 3 Report

Dear authors,

Congratulations on this new version. All issues from the previous version were solved and the information requested was included in the manuscript.