Kinematic Calibration of the Parallel Mechanism with Two Adjacent Axes

As a precision mechanical system, the aircraft landing gear is highly susceptible to static errors such as manufacturing tolerances and assembly deviations, which can significantly impact it's kinematic accuracy and potentially lead to severe consequences. Therefore, it is critical to construct an accurate kinematic model considering manufacturing tolerances and assembly deviations. To tackle the problems mentioned, this study investigates the kinematic calibration of an aircraft landing gear mechanism to enhance its kinematic accuracy and reliability. By employing an improved D-H parameter method to establish the kinematic model and developing a kinematic error model, this research analyzes the influence of error sources on the end-effector. The findings provide theoretical support for the design and reliability analysis of landing gear mechanisms.