Abstract
Open-architecture products (OAPs) meet users’ personalized requirements using functional modules and adaptable interfaces in the products. Although different methods have been proposed for product assembly planning, there is a lack of methods for OAPs considering both levels of assembly operations for product modules and components in products. This paper proposes a product structure graph and an assembly constraint matrix to represent constraints of product modules and components in OAPs for assembly sequence planning. Modules in OAPs are first examined for their feasibility to be assembled independently in an operation. If a module cannot be assembled as a sub-assembly, it will be divided into several sub-assembles or components with a revised product hierarchical structure graph. Assembly sequences of components in the module are planned based on the assembly constraint matrix of the components. The feasible assembly sequences of modules and components can then be formed. The proposed methods are verified in the application of an industrial product.
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