## 1 Introduction
[23] propose an original framework which investigates the impact of the principles of Industry 4.0 on assembly system design named \"Assembly system 4.0\". The main features of purposed systems are late customization of assembled products, assembly control system, aided assembly, intelligent storage management, product and process traceability and self-configured workstation layout. For our research, the feature \"self-configured workstation layout\" is relevant. The proposed self-configured workstation layout autonomously adjusts the rack, shelf and workbench dimensions considering the assembly product and the assigned worker. Self-configured workstation layout aims to optimize the assembly activities and minimize picking and fastening time thus ensuring ergonomic working conditions. [PERSON] et al. [24] proposed Design for Assembly (DfA) approach, called 4M, which takes into account all the most important aspects involved in the manual assembly: Method (assembly issues related to the assembly procedure), Machine (assembly issues related to the workstation layout), Man (assembly issues related to the worker) and Material (assembly issues related to the product and components design). The aim of their study is to provide a means for the concurrent improvement of the product design and assembly line, the workstation ergonomics, and assembly tasks. In our study, we use a holistic approach to design an assembly system (smart workstation, smart algorithm, implementation of tool and technologies, inclusion of ergonomics), like [PERSON] et al. in [24] for product design. [PERSON] et al. [8] give an overview of existing solutions and prototypes in the field of assistive systems for manual working stations in research and practice and discuss their specific focus. All systems focus on an information assistant that provides the right information for the right situation. Only a few solutions and projects are presented here in the paper: Augmented Workplace from motionEAP project (development of an augmented workplace), ProMiMo (implementation of user-centered assistance for manual assembly at a workbench), Manual Working Station of SmartFactory KL (development of smart workstation equipped with an assistive system for sequential assembly process), Operator support system TNO (Bosch, development of operator support system for assembly, focusing on information assistance for the worker), Active Assist Bosch Rexroth (system serving as a configurable and open web platform. Features of this software include a context-sensitive information provision and a standardized interface for additional system components (e.g., pick-to-light, projector, touchscreen, Radio-frequency identification (RFID) reader). [PERSON] et al. [18] developed a fully adjustable, ergonomically designed assembly workstation with special features such as a motorized table with upward, downward and angular movements, an ergonomic chair with the adjustable seat pan, arm and back supports, and a mechanism for bins and tool adjustments. They experimented on traditional and the smart assembly workstations to boost operators' performance and reduce occupational health and safety problems in the workplace. In [PERSON] et al. [25], the authors present the advantages and disadvantages of implementation of I4.0 technologies (RFID, custom made visual guidance on touch liquid-crystal display (LCD), push buttons, etc.) in iterative assembly line balancing process of a gearbox assembly line. Due to complex mechanical parts in gearboxes, the assembly is performed manually. Assembly line balancing process was carried out through the \"Manual approach\" and \"I4.0 approach\". The analyses showed the unsurpassed advantage of \"I4.0 approach\" in comparison to \"Manual approach\" in term of increase of information flow speed, reduction of paper sheet consumption, reduction of necessary working space for administrative activities, and simplification of data post-processing. [PERSON] et al. [26] focused on the visualization and digital guidance of the manual assembly process.