Electric Power Steering (EPS) is increasingly becoming the standard in modern vehicle designs, especially in passenger cars. Traditional hydraulic power steering systems are being phased out in favor of EPS due to their improved fuel efficiency, environmental benefits, and compatibility with advanced driver-assistance systems (ADAS). Unlike hydraulic systems that require oil maintenance, EPS is cleaner, more energy-efficient, and allows for better integration with automation technologies like autonomous driving.
Despite early concerns about the "feel" of EPS, advancements in sensor technology and control algorithms have significantly improved its performance. Most drivers today can hardly tell the difference between EPS and hydraulic systems, as EPS now delivers comparable handling and responsiveness. However, the challenges faced by EPS in commercial and industrial vehicles are far greater.
In large trucks, buses, and off-road vehicles, steering systems must handle higher torque requirements, endure extreme conditions, and operate reliably over long distances—often exceeding 400,000 kilometers within just a few years. These vehicles also face harsh environments, including high levels of vibration, temperature fluctuations, and heavy loads. This makes reliability and durability essential for EPS systems used in such applications.
To meet these demands, EPS systems must be equipped with high-performance sensors that can accurately detect steering input and provide real-time feedback. Traditional contact-based sensors often fail under these conditions, leading to noise, reduced accuracy, and potential safety issues. A better solution is the use of non-contact magnetic sensors, which are more durable, accurate, and less affected by environmental factors.
TT Electronics' Magnetorque Plus sensor is specifically designed for rack-mounted EPS systems in commercial and industrial vehicles. It combines non-contact torque and multi-turn position sensing into a single, rugged unit. This sensor is capable of withstanding extreme vibrations and operating in challenging environments. It offers a resolution of ±5° for torque and supports up to 4 full turns of rotation, making it ideal for larger vehicles that require precise and consistent steering assistance.
The sensor uses Hall effect technology, which measures the magnetic field generated by rotating magnets to determine both position and torque. The design separates the position and torque sensing components, allowing for independent operation without mechanical wear. This ensures long-term reliability and reduces the risk of failure in critical applications.
In addition to its robust construction, the Magnetorque Plus sensor provides customizable outputs, including programmable torque offset and slope adjustments, enabling it to adapt to different vehicle configurations. Its compact and integrated design also simplifies system installation and reduces overall costs compared to using two separate sensors.
As the automotive industry moves toward automation and electrification, EPS will play an even more crucial role in commercial and industrial vehicles. TT Electronics’ innovative sensor technology is helping to make this transition smoother, safer, and more efficient for the next generation of vehicles.
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