A key feature of an e-bike is its ability to provide varying degrees of electrical assistance depending on how hard and fast the rider pedals. The mechanism relies on a technology called the Pedal Assist System 

(PAS), which uses sensors to detect the rider's input and adjust the motor's output power accordingly.

First, the working principle of the treadle force auxiliary system

Treadle assist systems typically include the following components:

Torque sensor: Mounted near the pedal or crank, it measures the force exerted by the rider on the pedal.

Speed sensors: Monitor the speed of the e-bike and ensure that the motor provides assistance within the appropriate speed range.

Controller: receives the data from the sensor and calculates the appropriate motor output to achieve the desired auxiliary effect.

When the rider starts to move the pedal, the torque sensor detects the movement and sends its information to the controller. The controller determines how much power the motor should output to assist the 

rider based on a preset algorithm and mode. This allows the e-bike to intelligently adapt to different riding conditions, such as uphill, upwind or flat road riding.

2. Improve riding experience and efficiency

The benefits of the pedal assist system include:

Energy saving: By accurately matching the rider's effort level, unnecessary power consumption is avoided and battery life is extended.

Enhance the sense of control: let the rider feel more natural, as if they are in control of the entire ride, and the motor is just behind the silent support.

Adapt to different terrain: Whether on city streets or mountain trails, pedal assist systems provide just the right amount of assistance to make riding easier.

Health benefits: Encourage people to be more physically active while reducing the fatigue and injuries that can result from long periods of high intensity riding.

Third, future trends

As technology advances, step assist systems are becoming more intelligent and personalized. For example, some high-end e-bikes can now connect to a smartphone app, allowing users to customize assistance 

modes and even automatically adjust the motor output by learning the user's riding habits. In addition, integrated heart rate monitoring and other biometrics are being introduced to further optimize the riding 

experience and ensure health and safety.