Off-spring generation: New solutions are obtained by changing the operations sequence (order crossover) and by changing the assignment of machines to the operations (uniform crossover);
Assignments of jobs operations to the machines in the schedules are described by the genes of the chromosomes and the order of operation that appears in the chromosome represents operations sequence. In our proposed GA, we have used three row structure to represent candidate chromosome (schedule).
The second unique element of an optimum all-variable speed chiller plant operations sequence
is to optimize the operation of condenser pumps and tower fans based on the power draw of the chiller served.
Mallikarjuna Rao, "Optimisation of operations sequence
in CAPP using an ant colony algorithm," International Journal of Advanced Manufacturing Technology, vol.
For instance, it is often neglected to consider the operations sequence
of each part (i.e., the order in which the operations are performed on each part).
* An operations sequence
within a job, called machine sequence, and processing time for an operations are given
The Operations Sequence
Manager favorably impresses CIMdata by providing visualization, ordering, and managing of NC operations.
Due to the geometrical and manufacturing constraints between manufacturing features, operation sequencing must take into account the precedence constraints between operations, which must be satisfied by the final operations sequence
. Many constraints and rules have been proposed and summarized [1, 5, 7].
The index algorithm is represented by the embedded operations sequence
with the index chains.
Automatic generation of a shopfloor packet is offered and may contain a tool listing, the seven standard APT cutter parameters, the operations sequence
, a listing of the machining parameters, setup instructions, the cutter path display for each operation, and the estimated machining time by operation.
Technology operations sequences
design for all products manufactured
Choi and Park, (2006) proposed a GA based method for IPPS, that minimise makespan of production order, considering alternative machines and alternative operations sequences
in integrated manufacturing.