Switching master-slave control method suitable for double-shaft-linkage overload electro-hydraulic servo system

The invention relates to the field of drive control, aims to solve the problem that for a control method in the prior art, when the overload problem is met, the situation that an oil cylinder and an attack angle mechanism are unstable in speed and alternately generate vibration creeping phenomena is easily caused, and provides a switching master-slave control method suitable for a double-shaft-linkage overload electro-hydraulic servo system. The system comprises a controlled mechanism, a shaft A and a shaft B; the shaft A and the shaft B are connected with the controlled mechanism; and the controlled mechanism is driven by the reciprocating rectilinear motion of the shaft A and the shaft B. The method comprises the following steps: a, determining a relation between an operation angle of the controlled mechanism and a two-shaft displacement; b, judging an operation direction of the controlled mechanism; c, determining a master-slave relation between the shaft A and the shaft B: according to operation character