No.1021E 2025Special Edition on Mobility Technologies Development of Column Type Electric Power Steering with Improved Level of Comfort

Category TECHNICAL REPORTS
Author M. SAKUDA
Fundamental Technology Development Dept. 1, Automotive Business Unit
Y. TOYAMA
Fundamental Technology Development Dept. 2, Automotive Business Unit
N. KAWAMURA
Fundamental Technology Development Dept. 1, Automotive Business Unit
K. TSUKAHARA
Fundamental Technology Development Dept. 2, Automotive Business Unit
Abstract Column type electric power steering (C-EPS) has been gaining popularity because it uses less energy than conventional hydraulic power steering. Recently, demand is high for small and lightweight, environmentally friendly products that help achieve carbon neutrality and allow for flexible vehicle design. There is also an increasing need for products that enhance user comfort. To contribute to society by responding to these expectations, we introduced the concept of “comfort enhancement” and developed a small, lightweight, and quiet C-EPS that offers good collision safety performance and steering feel. To achieve this, focus was placed on optimizing the design and ensuring compatibility between components while implementing individual component technologies that provide the foundation for the evolution of C-EPS.
Keyword column type electric power steering, C-EPS, small, lightweight, comfort, quiet, collision safety performance
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