# A Study on Design and Control of the Multi-Station Multi-Container Transportation System
## 5 Conclusions and Future Developments
### Future Developments  
The mechanical structure of the absolute system has been fully designed and installed while ensuring efficient operation. In addition, an appropriate algorithm for addressing the distribution problem has been completely proposed; therefore, the system could operate with no significant logical error. The effective absolute system has been completely manufactured and installed; therefore, proper tests were carried out, ensuring the practical applicability of the system. With the shortcomings stated in Section 5.1, the following development of the system is proposed:  
* As mentioned in Section 5.1, to solve problem (1) with the vibration, we have proposed a design of an interlink frame for the component conveyors. These interlink frames also need to be designed as a standardized module for easy installing and removal when access to component conveyors is required.
* For noise reduction (2), when considering the working environment that takes human factors into account, such as factories, warehouses, or hospitals, other alternatives for suitable types of conveyors could be implemented, such as PVC, roller conveyor, etc. On a side note, the team of authors also propose a future mechanical development, which is the development of aluminum casting technology. By casting an aluminum conveyor frame, the difficulties of tolerances and assembling could be reduced. It also helps the system run smoothly. This technique is already feasible and can also be applied in large-scale production to reduce costs.
* To solve problem (3) regarding data transmission, currently, the Open Platform Communications (OPC) standard is an effective tool for easier data communication. In the next steps, the OPC standard will be applied so that all data updates will be synchronized to the OPC server, making it easier to manage and control the system.
* Regarding issue (4), as mentioned, to expand the system, there are a few problems that needed to be considered: 1. The problem of management and quality control in mass production with generous quantities. 2. The appropriate plan for installation and maintenance of the overhead conveyor system, while still ensuring rigidity and conducting the deviation when the transport distance increases. 3. The problem of scaling the control algorithm, etc.  
These authors contributed equally to this work. The detail contribution of all the authors are listed as below: N.H.L.K.: Data curation; Methodology; Investigation; Software; Writing--original draft. V.A.P.: Conceptualization; Methodology; Validation; Writing--original draft. T.T.C.V.: Data curation; Conceptualization; Software; Validation; Visualization. V.T.B.D.: Resources; Visualization. T.D.T.: Resources; Software; Validation. N.P.N.: Methodology; Resources. T.Q.V.: Conceptualization; Funding acquisition; Methodology; Project administration; Supervision; Writing-review editing. All authors have read and agreed to the published version of the manuscript  
This research is funded by the Ho Chi Minh City Department of Science and Technology (DOST) under contract number 99/2019/HD-QPTKHCN.  
Not applicable.  
This study do not report any data.  
The authors would like to express special thanks to the Ho Chi Minh City Department of Science and Technology (DOST) under contract number 99/2019/HD-QPTKHCN and the Bach Khoa Research Center for Manufacturing--Ho Chi Minh City University of Technology--Vietnam National University-Ho Chi Minh City, VNU-HCM, Vietnam.  
The authors declare that there are no conflict of interests.