// ROBOTICS AND SMART FACTORIES TERM

Mura

A Japanese term in Lean manufacturing referring to unevenness or irregularity in an operation, often caused by fluctuating production schedules or inconsistent work methods.

TECHNICAL DEFINITION

Mura, a key Lean concept, describes unevenness or irregularity in production processes, workload, or demand, leading to bottlenecks, idle time, and stress on resources, often addressed through Heijunka (production leveling) to achieve smoother flow.

BACKGROUND

The Toyota Production System (TPS) is an integrated socio-technical system, developed by Toyota, that comprises its management philosophy and practices. The TPS is a management system that organizes manufacturing and logistics for the automobile manufacturer, including interaction with suppliers and customers. The system is a major precursor of the more generic "lean manufacturing". Taiichi Ohno and Eiji Toyoda, Japanese industrial engineers, developed the system between 1948 and 1975.

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SYNONYMS & ALIASES

  • Unevenness
  • irregularity
  • inconsistency
  • fluctuation
  • variability

USAGE NOTE

Mura can lead to Muri (overburden) and Muda (waste), making its reduction crucial for stable operations.

DEVELOPERS

Organizations developing technology related to Mura.

  • Siemens

    Develops the Digital Enterprise Suite, including the MindSphere IoT platform and Opcenter MES, which digitalize and automate manufacturing processes to create stable, predictable production flows and eliminate unevenness.

  • Dassault Systèmes

    Offers the 3DEXPERIENCE platform with DELMIA applications for virtual twin simulations and advanced planning and scheduling (APS), allowing manufacturers to model, optimize, and balance production lines to prevent irregularities.

  • SAP

    Provides the SAP Digital Manufacturing Cloud and S/4HANA Manufacturing solutions, which integrate enterprise-level planning with shop-floor execution to synchronize operations and level workloads, directly counteracting production unevenness (Mura).

  • Rockwell Automation

    Delivers industrial automation and information solutions, including the FactoryTalk software suite and MES platforms, that provide real-time control and visibility to standardize workflows and maintain a consistent production pace.

  • GE Digital

    Specializes in industrial software, including its Proficy suite for Manufacturing Data Management and Analytics. The technology enables real-time monitoring of operations to identify and correct process variability and inconsistency.

  • Hitachi Vantara

    Develops the Lumada platform, an IoT and data analytics solution used in manufacturing to optimize production schedules, predict maintenance needs, and analyze process data to identify and eliminate sources of inconsistency.

  • Plex Systems

    A Rockwell Automation company that provides a cloud-based Smart Manufacturing Platform. Its MES and ERP capabilities give manufacturers real-time data to smooth production scheduling, manage inventory, and eliminate the bottlenecks that cause Mura.

  • PTC

    Offers the ThingWorx Industrial IoT platform, which connects disparate factory systems and analyzes operational data. This enables manufacturers to gain insights into process variations, optimize asset utilization, and stabilize production flow.

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