Design of a Digital Twin Training Centre for an Industrial Robot Arm

Round 1

Reviewer 1 Report

The authors have presented a method to support the virtual learning of robotics within the context of Cyber-Physical Systems. The manuscript reads well, however, there are certain changes that need to be made to improve the quality of the paper. 

  1) The critical analysis of relevant work is lacking. The authors should discuss other virtual environments that are used for learning/teaching purposes and highlight the contributions of this work clearly.   2) The manuscript writing style is not academic. For example, line 157. It is suggested that the authors improve it.   3) Table numbers on page 18 are wrong.   4) References are needed for CPS definition in line 60.

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

The Cyber-Physical & Intelligent Robotics Laboratory was created. The design was well presented and the overall organziation was good. The contribution was validated. The readability was also very good. 

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

The paper is well structured and can be considered as the point of interest at present time. The topic is interesting and can be considered for publication in Applied sciences after few changes. The major changes required in the manuscript are: 

1. Abstract of study is very general and in my suggestion can be revised by incorporating how this study can be helpful for the the SMEs? How the study can be helpful to achieve Sustainability goals of manufacturing organization?

2. It is better to incorprate some sustianability aspect of digital twin technology as the Industry 4.0 technologies have a positive impact on the sustainability at the different level of organization. The few examples have already published in the Applied Sciences journal are: 

 a. (2021)  Industry 4.0 technologies for manufacturing sustainability: a systematic review and future research directions. 

b. (2021) Sustainability requirements of digital-twin based systems: a meta systematic literature review

c. (2020) Digital twin in product life cycle for sustainability in manufacturing and maintenance.

These are few suggested articles which discuss impact of digital twin on sustainability. I recommend authors to follow the contributions of these articles and add in the present study.

3. Introduction is well written up to some extent but very few related studies have been cited. There are very vague statements which have been used without proper referencing. My suggestion is to add few more references in the study.

4. The study is without a research objective or questions. My suggestion is to add research objective or questions in the study.

5. Figure 10 is not clear needs revision.

6. In Table 3 results have been presented It is better to present the demographic details of respondents. How many respodents were there?

7. Results and discussion section needs revision and can be presented in a better way.

8. Conclusion lacks to present the future scopes and limitation of the study.

In my suggestion the study has potential for publication but require major changes before publication in high end journal like Applied sciences.  

Author Response

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Author Response File: Author Response.pdf