End pose error compensation method for non-decoupled mechanism with six degrees of freedom in time-varying temperature field

Abstract

A six-degree-of-freedom non-decoupling mechanism tail end pose error compensating method in a time-varying temperature field is provided. The method comprises steps of: establishing a deformation error database related to an external object; determining the actual position of the tail end of the external object after the temperature of the temperature field changes; comparing the actual position and the ideal position of the tail end of the external object to determine the positional deviation value of the tail end of the external object; determining an adjusted value required to be adjusted of the position of the tail end of the external object according to the deviation value of the external object and the deformation error database; and adjusting the position of the tail end of the external object by using the six-degree-of-freedom non-decoupling mechanism according to the adjusted value required to be adjusted of the position of the tail end of the external object. The compensation of the micro change of the position of the tail end of the six-degree-of-freedom non-decoupling mechanism caused by the six-degree-of-freedom non-decoupling mechanism time-varying temperature field external object module error compensation method in a stable inconstant state due to thermal expansion and contraction can improve the motion pose accuracy of the external object.

Description

technical field [0001] The invention relates to an error compensation method, in particular to a method for compensating the end pose error of a six-degree-of-freedom non-decoupling mechanism in a time-varying temperature field. Background technique [0002] The existing industrial and military technology development fields have higher and higher requirements for the spatial motion accuracy of objects, and changes in the ambient temperature will more or less change the original position of the object. Thermal expansion and contraction have a significant impact on occasions that require high position accuracy, so the study of temperature changes on the error compensation of the model has a non-negligible significance. [0003] The wind tunnel is an important technical equipment for aerodynamic research, especially for the development of the country's aerospace industry. If a country wants to develop aircraft and aircraft, it must have a complete set of aerodynamic test facil...

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