Electronic power steering (EPS) is an essential feature in modern-day cars that has made driving much more comfortable and safer.

The EPS controller is a crucial component of this system, responsible for controlling and adjusting the power of steering in response to various driving conditions. In this article, we will discuss the electronic controller of electric power steering in detail.

Electronic power steering - EPS

Electronic power steering – EPS

The EPS system is designed to make steering easier, especially when the car is moving at low speeds. It works by using an electric motor to assist the driver’s steering input, reducing the force needed to turn the wheel. Unlike traditional hydraulic power steering systems that use a pump to create hydraulic pressure, EPS systems use an electric motor to provide the necessary power.

The EPS controller is the brain of the EPS system and is responsible for controlling the electric motor that provides power assistance to the steering wheel. The EPS controller uses input from various sensors, such as the steering angle sensor, vehicle speed sensor, and torque sensor, to determine the level of assistance needed for steering. It processes this data and sends signals to the electric motor to adjust the power assistance accordingly.

The EPS controller also performs various safety functions, such as limiting the level of power assistance when the car is moving at high speeds to prevent oversteering, and disabling the power assistance when there is a fault in the system. In addition, the EPS controller can detect when the driver is applying too much force to the steering wheel and adjust the power assistance accordingly, making the steering feel more natural and intuitive.

EPS controllers can be divided into two types: centralized and decentralized. Centralized controllers are typically located in the engine compartment and are responsible for controlling the entire EPS system. Decentralized controllers, on the other hand, are located in each steering wheel and are responsible for controlling the power assistance for that wheel only. This type of controller is often used in four-wheel-drive vehicles, where each wheel requires independent power assistance.

In conclusion, the EPS controller is a critical component of the EPS system and is responsible for providing the necessary power assistance to the steering wheel based on various driving conditions. It is a testament to the continual technological advancement of modern-day cars and has made driving much more comfortable and safer.