An investigation is made to the friction chutch engagement control of automotive AMT systems based on a nonlinear dynamic model with double inputs. According to
The physical datum method that uses the laser beam as the physical datum is proposed.A high accuracy of the straight movement on the line above 0.01 μm/100 mm
The grinding principle of plane envelope is demonstrated with the medium rack theory.The basic and general fixing patts of grinding involute worms with plane en