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Installation and calibration instructions

Step-by-step guidance to properly set up and fine-tune your system for optimal performance.

Steering wheel clearance calibration

Steering wheel play, in colloquial terms, refers to the maximum angle/travel the steering wheel can move without turning the wheels. Turning left and right without any wheel movement. More simply, it is the range of “free play,” with no resistance and no wheel response while turning the steering wheel. In the automotive industry, this is commonly known as “steering free play.” Calibrate according to the interface instructions. Turn the steering wheel left and right, then subtract the angle values to obtain the steering wheel play value.

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Obtaining differential data

Custom Network Setup: Enter the network name, IP address, port, account password, access point, and other required parameters. NTRIP Connection: Enter the IP address, port, account password, and mount point. The anti-interruption timeout can be configured. If the differential signal is lost, a timeout period can be set to maintain precise satellite positioning within the specified range and prevent the system from switching to AUT mode. The maximum setting is 600 seconds. As the differential age increases, satellite positioning accuracy will gradually decrease.

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Calibration of the rotational transmission ratio

The steering ratio, simply put, is the ratio between the “steering wheel rotation angle” and the “actual steering angle of the vehicle’s wheels.” In essence, it is a key parameter that measures “how much the wheels turn for a given amount of steering wheel rotation,” directly determining the “steering sensitivity” and “steering feel” of the vehicle. The formula can be understood intuitively: Steering Ratio = Steering Wheel Rotation Angle (°) ÷ Vehicle Wheel Steering Angle (°) After calibration starts, the vehicle will automatically move forward along an S-shaped trajectory. Please ensure there is sufficient space in front of the vehicle. Through automatic driving along the S-shaped trajectory, the vehicle can automatically calibrate the steering ratio.

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Instalation posture calibration

Vehicle roll angle and pitch angle are two key angles that describe the vehicle’s position in three-dimensional space, corresponding respectively to “left-to-right tilt” and “front-to-back tilt,” measured in degrees (°). They are defined based on the ISO 8855 vehicle coordinate system (X-axis forward, Y-axis to the left, Z-axis upward). First, create a straight reference line and follow the interface instructions. Drive autonomously in both directions to calibrate the vehicle’s roll and pitch values. Be sure to save and complete the calibration.

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Offset calibration

“Offset” calibration is a critical step for correcting GNSS antenna offset, controller installation errors, and steering mechanical deviation through “driving back and forth along the same AB line + marking measurement,” so that the trajectory consistency in both directions is ≤ ±1 cm. The core purpose is to ensure that the “outbound” and “return” trajectories are aligned and consistent, eliminating missed cultivation or overlapping cultivation during cross passes. Perform the calibration procedure according to the interface instructions, enter the measured values, and complete the full calibration.

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Adjusting the amplitude and sensitivity of the autopilot

Amplitude: The higher the motor's operating value, the faster the motor will rotate. Sensitivity: The speed of the motor's response – the lower the value, the faster the response.

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