A Novel Methodology for Hardware-Software Co-Design of Real-Time Embedded Systems for Industrial Automation in Nigeria

Hardware-software co-design methodology for real-time embedded systems balances the partitioning of functionality between custom hardware and software implementations to meet timing, power, and cost constraints simultaneously, yet no formal co-design methodology adapted to the constraints of Nigerian industrial automation development, including limited FPGA and ASIC expertise, local manufacturing limitations, and specific industrial environment requirements, has been established. This study developed an original hardware-software co-design methodology specifically adapted for real-time embedded industrial automation systems in Nigeria, with application to motor drive control for Nigerian manufacturing industry. The methodology development followed a four-phase process: systematic review of co-design methodologies from 2018 to 2024 (41 publications), constraint elicitation through structured interviews with 12 Nigerian industrial automation engineers, original formal methodology specification, and validation through three case study implementations. The original Nigerian Industrial Embedded Co-Design Methodology (NIECM) defines seven co-design stages, from system requirements specification through hardware-software partitioning, co-simulation, implementation, and certification, with explicit guidance for each stage adapted to the toolchains and skill levels available in Nigerian engineering practice. An original constraint-driven partitioning algorithm was developed that incorporates Nigeria-specific constraints including FPGA cost ceilings (under 200,000 naira), limited local FPGA programming expertise (expressed as a complexity constraint), and industrial environment specifications. Three motor drive control case studies showed that NIECM-guided designs achieved 89 percent of optimal partitioning quality with 41 percent reduction in design effort compared to ad hoc approaches. Expert review confirmed original methodological contribution.

Keywords: hardware-software co-design, real-time embedded systems, industrial automation, Nigeria, FPGA