Why is automation of wound rotor cranes difficult?

Control is discrete due to notch-based operation, speed varies with load/rail conditions, and low-speed stability is poor.

What is the biggest advantage of this new technology?

No need for inverter retrofitting—enables low-cost, short-term automation of existing cranes.

What is Smart MPC® technology?

A control AI that learns crane dynamics from minimal operation data to achieve precise sway control and positioning.

Where will this technology be implemented?

Initially at JFE Steel's East Japan Works (Chiba), with rollout planned across all sites.

What is the significance of this joint development?

Enables automation of aging wound rotor cranes, boosting productivity and addressing labor shortages in steel industry.

AI News NQ Analysis

Achieving High-Precision Automated Control of Secondary Resistor-Controlled Overhead Cranes! Successfully Developed Retrofit-Type Automation Solution Without Replacing with Inverter Control!

Key facts

Achieving High-Precision Automated Control of Secondary Resistor-Controlled Overhead Cranes! Successfully Developed Retrofit-Type Automation Solution Without Replacing with Inverter Control!
JFE Steel Corporation and Proxima Technology Co., Ltd. have jointly developed a foundational technology for a new automation solution enabling high-precision autonomous operation of secondary resistor-controlled overhead cranes. This eliminates the need for costly inverter control retrofits, enabling fast, low-cost automation of existing equipment.
Source: PR TIMES
Date: Wed Jun 17 2026 20:06:36 GMT+0900 (Japan Standard Time)

Direct answer

JFE Steel Corporation and Proxima Technology Co., Ltd. have jointly developed a foundational technology for a new automation solution enabling high-precision autonomous operation of secondary resistor-controlled overhead cranes. This eliminates the need for costly inverter control retrofits, enabling fast, low-cost automation of existing equipment.

Citation: Achieving High-Precision Automated Control of Secondary Resistor-Controlled Overhead Cranes! Successfully Developed Retrofit-Type Automation Solution Without Replacing with Inverter Control! (Wed Jun 17 2026 20:06:36 GMT+0900 (Japan Standard Time)), PR TIMES
Source: PR TIMES
Date: Wed Jun 17 2026 20:06:36 GMT+0900 (Japan Standard Time)

AI Summary (NQ-processed)

JFE Steel Corporation and Proxima Technology Co., Ltd. have jointly developed a foundational technology for a new automation solution enabling high-precision autonomous operation of secondary resistor-controlled overhead cranes. This eliminates the need for costly inverter control retrofits, enabling fast, low-cost automation of existing equipment.

AI Analysis

Frequently Asked Questions

Q: Why is automation of wound rotor cranes difficult?: A: Control is discrete due to notch-based operation, speed varies with load/rail conditions, and low-speed stability is poor.
Q: What is the biggest advantage of this new technology?: A: No need for inverter retrofitting—enables low-cost, short-term automation of existing cranes.
Q: What is Smart MPC® technology?: A: A control AI that learns crane dynamics from minimal operation data to achieve precise sway control and positioning.
Q: Where will this technology be implemented?: A: Initially at JFE Steel's East Japan Works (Chiba), with rollout planned across all sites.
Q: What is the significance of this joint development?: A: Enables automation of aging wound rotor cranes, boosting productivity and addressing labor shortages in steel industry.