Fuzzy Linear Active Disturbance Rejection Control Method for Permanent Magnet Electromagnetic Hybrid Suspension Platform

Round 1

Reviewer 1 Report

The modelling of Suspension Control Unit has been developed with several assumptions and at the end the system has been linearized. The model has to be a nonlinear one to realize the real system.

The controller equation looks similar to PID. Thus, the motivation behind choosing LADRC need to be justified.

There is no explanation regarding the choice of membership functions, inference system etc.

As shown in (18), the system is a simple linear 2 state system. Thus, how the given state space can be related to the real-time system.

As per Table 3, the parameters of the controller are in thousands. The Ki is 200000. How it is possible to implement in real-time? Same goes for other parameters.

As per Table 3 & 4, the Kp of LADRC is 85000 and Kp of PID is 50000. I am sure if you keep Kp of PID also to 85000, it will achieve the same response as LADRC. Thus, what is the need for LARDC.

There are several works in the literature, which have shown the better performance of ADRC compared to PID. Thus, the novelty has to be highlighted clearly. 

Such an oscillatory in the control action, will easily degrade the system. How it can resolved?

 

 

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Reviewer 2 Report

1) It is desirable to extend the introduction part and add more literature review related to the topic. For instance, to explain in more details benefits of LADRC utilization in comparison with other control strategies like: cascade PID, auto-tuning adaptive PID, or adaptive neuronal technique and the extended Kalman filter.

2) Please try to specify the symbols in all equations (e.g. in (9) is the 's' a root of a system equation?)

3) Improve the quality of Figure 10 and Figure 11.

4) Please indicate in the conclusion if the proposed fuzzy linear active disturbance rejection control method is applicable only for the permanent magnet electromagnetic hybrid suspension platform or it can be applied for example for Super Conductive Maglev, too? 

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

The updated manuscript is missing. I can see the older manuscript only. However, the authors' response is satisfied. 

 

Author Response

Dear Editor and Anonymous Reviewer,

Thank you for your letter and the reviewers’ comments on our manuscript entitled “Fuzzy Linear Active Disturbance Rejection Control Method for Permanent Magnet Electromagnetic Hybrid Suspension Platform” (ID: applsci-2213311). The revisions in the text are highlighted in blue. The response to the reviewers’ comments is as follows:

1: The updated manuscript is missing. I can see the older manuscript only. However, the authors' response is satisfied. 

Response: Thank you for your valuable time and generous acceptance. We have uploaded the updated manuscript as an attachment.

We hereby resubmit the revised manuscript and hope that all corrections are satisfactory. Please feel free to contact us with any questions and we look forward to your decision.

 

Yours Sincerely,

Yao Qin, Jie Yang, Haoqi Guo, Yongzhuang Wang

 

Author Response File: Author Response.pdf