Modularized test bench for measuring output performance and magnetic flux leakage of magnetostrictive actuator

The invention provides a test bench for modularly measuring output performance and magnetic flux leakage of a magnetostrictive actuator. The test bench comprises a basic bench, a top plate and replaceable accessory modules, the magnetostrictive actuator is fixed in the base rack, the output end of the magnetostrictive actuator is connected with one end of the first dynamic force sensor, and the other end of the dynamic force sensor is provided with a displacement sensor measuring disc with a strain type static force sensor; the basic rack comprises a base, and an optical axis, a Hall probe bracket provided with a Hall probe and a displacement sensor bracket provided with an eddy current displacement sensor are fixed on the base; the top plate is a star-shaped top plate or a flat top plate, is arranged at the optical axes of the basic rack in a penetrating manner through optical axis holes in the periphery of the top plate, and is locked at the optical axes through fasteners at the optical axis holes in the pe