Ultra-stable multi-directional low-frequency actuator

An ultra-stable multi-directional low-frequency actuator, comprising a baseplate, a bearing plate, a connecting mechanism, and two executing mechanisms symmetrically arranged on the baseplate with respect to a Y axis, wherein each of the executing mechanisms comprises a support leg, a lateral support seat, two high-static low-dynamic spring dampers, two vertical executers, two horizontal executers, two elastic components, and four sensing components;

• both ends of a lower part of the support leg are connected with the baseplate through one high-static low-dynamic spring damper and one vertical executer which are arranged in parallel, respectively, and both ends of an upper part of the support leg are provided with one sensing component, respectively;
• the lateral support seat is arranged on the baseplate, a first groove is formed in a middle part of an outer side of the support leg, one horizontal executer and one elastic component are arranged in parallel between each of both sides of the lateral support seat and the first groove, and both ends of each of the horizontal executers are connected with the lateral support seat and the support leg, respectively;
• the sensing components corresponding to the horizontal executers one by one are arranged at an inner side of the support leg;
• the two horizontal executers located on a same lateral support seat are symmetrically arranged with respect to an X axis, and axial directions of the two horizontal executers located on the same lateral support seat are perpendicular to each other;
• the connecting mechanism are configured to connect two support legs, both ends of the bearing plate are mounted at upper parts of the two support legs, respectively, and the vertical executers and the horizontal executers are configured to drive the bearing plate to perform six-degree-of-freedom actuation.