Among the existing methods of making horizontally directed wells for trenchless laying utilities, method static soil puncture is most popular. The main disadvantage this poor accuracy piercing head movement in soil. This drawback requires constant adjustment trajectory movement. controlled by using a with an asymmetric tip and action translational translational-rotational motion on it. transmis...

For a new kind of automatic transmissions using proportional pressure valves to control the clutches directly, a two-degree-of-freedom controller is designed for clutch slip control during the inertia phase of the shift process. The controller is designed based on a low order linear model which is derived from dynamics of the proportional pressure control valve and the vehicle drive line. The f...