Recovery Mechanism in Machine repair system with Cobot and Reboot Impact.

This is an investigation of M/M/2 heterogeneous server, queueingmodel in which first server is totally reliable and always available but thesecond server provides two services. The second server originates with twoservices, one is an essential service (ES) and the second is optional service(OS). The arrival of failed units follows a Poisson distribution and theservice follows an exponential distribution. The second server is the cobotserver which is a combination of humans and robots and provides twoservices. In the development of robotic services, these robots face difficultyin real-time tracking, so reboot and recovery are also included. Theproposed model is developed with two servers and working vacation. Aprospective implementation of proposed model is also provided. The state-transition diagram and the corresponding differential-difference equationsfor the given system are introduced. R-K IVth is used to obtain systemperformance measurements. Numerical results and graphs are displayed byMATLAB and using ANFIS adaptive neuro-fuzzy inference system for verifythe computational tractability of the expected queue length.