# Industrial Design of Electric Machines Supported with Knowledge-Based Engineering Systems
## 5 Results and Discussion
### Working Time Consumption Comparison with and without the KBE Application  
Working time consumption comparison with and without the KBE system is made for a straightforward design without time spent due to changes in requirements or any other tasks that could slow the process. Table 1 shows the time consumption comparison reflecting the advantage of implementing the KBE system. In the use case example, a reduction of up to 76% could be achieved.  
The major reasons for a faster development process are not only due to automation of repetitive tasks but also that the information is at hand in every stage, i.e., the designer does not have to spend time searching for any type of data and information. It is important to remark the time shown in the table is the total working time spent on the steps presented in the standardized micro-processes (guidelines) on each stage, so tasks outside these actions are not considered. For instance, the prototype testing stage also involves making the tests, which requires many hours of work, especially for thermal tests. Therefore, the time presented in this stage is only time spent on analyzing data as presented in the activity diagram in the prototype testing stage. The same applies to the rest of the stages.  
In summary, this paper described an implementation example of a KBE system capable of achieving faster designs of industrial electric machines. This work identified the macro-processes regarding the reuse of validated components as an opportunity for companies in the electric machine industry to take a step forward to implement KBE system in their current processes. Therefore, the industrial design of electric machines includes many repetitive tasks that can be automated; however, the knowledge should be formalized before applying it in a KBE system. The results obtained in this work (shown in Table 1) proved the advantage of implementing this type of KBE system in the industrial V-model for time consumption reduction for the electric machine development process. Although the comparison was made for an ideal straight forward design (i.e., no macro-process was repeated), for the use case example, the result shows that a time workload reduction up to 76% is achievable, not only upon the automation of repetitive tasks but also because the information is at hand at every stage. One additional feature to highlight is that by following the same process, the designer can create several projects at the same time. This allows the execution of projects in parallel to compare different motor solutions based on distinct models, i.e., different combinations of stator and rotor laminations.  
Certain skills are still necessary to devised and implement a KBE system. Nevertheless, this paper shares a practical implementation to encourage stakeholders that even though some tasks may seem complex, they can be simplified through KBE systems to profit time. In this way, the designer can spend more time being creative and not worrying if computation was done correctly or if he/she misses a step. The macro-processes herein presented were synthesized for the understanding of any electric machine designer. The main functionalities that the KBE system provides were grouped as development process traceability, knowledge accessibility, automation of tasks, and intelligent support, to show what should be targeted in a KBE system for the electric machine design domain.