Error modeling of 6-dof simulation system based on multi-body system

The 6-dof simulation system has many error factors. To reduce error magnitude and raise simulation precision, the error model is established. The basic idea is to establish topological structures and low-order body arrays under which the basic principle of multi-body system kinematics is applied. By analyzing the basic rules of system with error, the composing method of characteristic matrix can be put forward. Based on characteristic matrix, synthesis error model including geometric, thermal and load errors are obtained. Experiment results show that the model is effective and accurate. This method can offer academic reference of error synthesis model and compensation for other multi-degree simulation system