Differential Steering Robot Chassis

The differential steering robot chassis is a classic wheeled robot structure that achieves movement and steering by independently controlling the speed difference between the left and right drive wheels. It requires only 2 drive wheels + 2 caster wheels to form a complete motion system, eliminating the need for steering mechanisms or complex wheel assemblies, thereby reducing chassis failure rates and costs. It also possesses the ability to turn on the spot, making it commonly used on flat indoor surfaces without ditches or thresholds.

Parameter Table

1. Differential steering mechanism: Steering is achieved by independently controlling the speed difference between the left and right drive wheels, eliminating the need for a traditional steering mechanism. This feature enables a minimum turning radius approaching zero (supporting on-the-spot rotation), enhancing maneuverability in narrow spaces and complex paths, as well as flexibility in trajectory planning.

2. Terrain Adaptability: The differential robot chassis performs well on flat, hard surfaces (such as laboratories or warehouses), but has limited obstacle-crossing capability and is not suitable for scenarios with ditches or high thresholds.

3. Supports forward, backward, and on-the-spot rotation movements. Some models can achieve omnidirectional movement (standard differential steering structures do not support omnidirectional movement, such as lateral translation; if omnidirectional capability is required, a Mecanum wheel/omnidirectional wheel chassis must be used).

4. Environmental perception and autonomous navigation: Integrating a multi-sensor system comprising lidar, IMU, and cameras, the system perceives environmental information in real time, dynamically optimizes motion trajectories and control parameters, and achieves high-precision autonomous navigation.

5. Mature control algorithms: The kinematic model of differential drive is relatively simple, and related control algorithms (such as PID control and path planning) have been thoroughly researched, making it easy to achieve precise motion control.

Indoor flat environments: Differential chassis rely on the friction between the drive wheels and the ground. Flat surfaces ensure stable and precise movement, such as in homes, offices, warehouses, hospitals, or shopping malls with smooth floors (wooden floors, tiles, cement floors, etc.).

Industrial and warehouse environments: Automated warehouses, factory production lines, narrow spaces (narrow aisles), no steps or ditches, used for cargo handling, inspections, or data collection.

Light or medium-load task environments: Light-duty item delivery, sensor data collection, etc.