How does Geely Auto’s electronic power steering system balance handling and energy consumption? Geely Auto’s electronic power steering system achieves a dynamic equilibrium between precise handling and fuel efficiency through the coordinated operation of a sophisticated sensor network and intelligent algorithms.
The system relies on torque sensors and vehicle speed sensors for perception. The former captures the steering force applied by the driver to the steering wheel, while the latter monitors the vehicle’s current speed. When the driver turns the steering wheel, the torque sensor converts the mechanical angular displacement into an electrical signal, which is transmitted to the electronic control unit.
The ECU’s built-in control algorithm comprehensively analyzes these signals, rapidly calculates the optimal assist torque required for the current driving condition, and converts it into an electrical current command sent to the assist motor. The key to this process lies in the algorithm’s dynamic adaptability.
The assist motor‘s design also embodies dual considerations for handling and energy consumption. Geely employs a high-efficiency permanent magnet synchronous motor, characterized by its ability to deliver high torque at low speeds and high energy conversion efficiency. The motor connects to the steering system via a reduction gear, with an optimized gear ratio preventing excessive reduction that could cause steering response lag at high speeds.
The motor control strategy incorporates active center-return and damping adjustment functions: After the steering wheel is turned beyond a certain angle, the system applies counter-torque through the motor to assist in returning the wheel to center, enhancing steering precision. During high-speed lane changes or cornering, the motor increases damping force to strengthen the driver’s road feel feedback.
How does Geely’s electronic power steering system balance handling and energy consumption? The system activates the motor only during steering maneuvers, with the motor entering sleep mode when not steering. This eliminates the energy waste caused by the continuous operation of the oil pump in traditional hydraulic systems. The ECU dynamically adjusts motor power output based on steering frequency and force, further reducing unnecessary energy consumption.
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