give me the GAMS solution of this disassembly model: Variables:

$•$ xi: Start time of the job at station i$.$

$•$ Yi: Number of robots used at station i$.$

$•$ T: Total disassembly time

Parameters:

ti: Time requred to complete the job at station i$.$

Ri: Maximum number of robots available at station i$.$

Objective Function:

Minimiza T : This aims to minimize the total disassembly time.

Constraints:

$1.$ Station Time Constraints

$•$ xi $+$ ti $<=$ T for all i$.$

$•$ Ensures that the finish time of each Job does not exceed the total time

$2.$ Number of Robot Constraints

$•$ yi $<=$ Ri for all i$.$

$•$ Ensures the number of robots used at each station does not exceed the maximum available.

$3.$ Job Priority Constraints:

$•$ Between the first and second stages

$•$ x$2>=$ max$($x$1+$t$1,$ x$6+$t$6,$ x$7+$t$7)$

$•$ x$3>=$ max$($x$1+$t$1,$ x$6+$t$6,$ x$7+$t$7)$

$•$ Between the second and third stages:

$•$ x$4>=$ max$($x$2+$t$2,$ x$3+$t$3)$

$•$ x$5>=$ max$($x$2+$t$2,$ x$3+$t$3)$

$4.$ Parallel Processing Constraints

$•$ First Stage $($Parallel Processes$)$

$•$ x$1=$ x$6=$ x$7$

$•$ Second stage $($parallel processes$)$

$•$ x$2=$ x$3$

$•$ Third Stage $($parellel processess$)$

$•$ x$4=$ x$6$

Answer rating: 100% (QA)

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