| 主权项 |
1. A system for producing a tangible object, including:
a space of predetermined thickness which can be filled with a fluid; a reference platform which at least partially defines at least one side of the space; a phase-transformer, for forming each of a first layer and a second layer of said object by selectively transforming the fluid into a solid in a predetermined area of said space, the forming of each of said layer including performing a first action with respect to said layer, said first action being selected from a group consisting of (a) initiating a step of separating said solid from said platform, (b) separating said solid from said platform, (c) finishing the step of separating said solid from said platform, (d) starting a step of providing the space of a predetermined thickness, and (e) completing the step of providing the space of predetermined thickness; the forming of each said layer further including determining a value of (a) a relative force exerted between the reference platform and the solid for separating said solid from said reference platform or (b) a parameter which is predictive of said relative force; an actuator for separating each of said layers from said reference platform by moving the reference platform relative to another side of the space or vice versa; and a controller connected with an actuator control output to said actuator and/or with a transformer control output to said phase transformer, said controller being configured and effective (a) to control a period of time or a moment in time for the first action with respect to the first layer based on the determined value for the first layer and (b) to control a period of time or a moment in time for the first action with respect to the second layer based on the determined value for the second layer, wherein the determined value for the first layer is different from the determined value of the second layer, whereby a time to produce the tangible object is reduced. |
