In a previous work a compliant microplatform was proposed. The device is formed by the following elements: the actuators, a central moving platform and compliant joints. The actuators are three sets of compliant beams able to support upward deflections. The moving platform is an equilateral plate. Springs connect the free end of each set of actuators with each vertex of the central platform, in this way the motion of the actuators is transmitted to the moving platform. This configuration is specially appropriated for micromanufacturing since current techniques do not permit the fabrication of reliable rigid joints. Compliant joints increase the complexity of the motion of the central platform and few studies have been carried out. This paper focuses on the derivation of equations that relates the velocity of the moving platform with the velocity of the actuators.