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This paper presents an analytical and computer aided procedure for the multicriteria design optimization of the electromechanical actuator. The constraints are defined to find the basic constructive parameters which defined have to by simultaneous optimized through objectively severe functions. For the defined to find the multi-criteria optimization model of the electromechanical actuator a computer program based in interactive dialogue in developed in an algorithm. The results of the program are presented considering a multicriteria optimization algorithm of the new electromechanical actuator.

We present the determining relationship of carriage in non-dimensional form for narrow radial bearings subjected to shocks and vibrations, as well as the determining relationships of the lubricant minimum thickness in relation to the dynamic loading. Due to the very short time of loading radial bearings subjected to shocks and vibrations, of about 0.5-1 ms, we consider only the approaching motion between spindle/axle and bushing on the direction of the centre line, without the rotation of the spindle/axle (the case of the non-rotating bearing), so that the effect of the lubricant expulsion be prevalent in the achieving of the self-carrying film. The paper is focused on determining relationship of carriage in dimensional form for narrow radial bearings exposed to shocks and vibrations, as well as the determining relationships of the pressure distribution from the film to be lubricated in various places of the bearing's body. It is showed the details during the measuring accomplishments and the experimental results are registered in a record of obtained results.