| 摘要 |
PURPOSE:To improve operation performances by a method wherein the torque and the slip speed of a motor and their differential value are converted into fuzzy language information and a signal obtained by calculating the weighted average of the results of required language rules near a fluctuating adhesion limit in accordance with the compatibilities to the rules is used to correct a motor torque instruction. CONSTITUTION:The output of a defuzzification means 13d which inverts a fuzzy expression into a definite expression again is used as a torque correction signal 113, which is a fixed torque correction value for obtaining high adhesion. Then the minimum value among the compatibilities of the magnitudes to a slip speed and the differential valve of the slip speed is employed to cut off the head part of the membership function of the torque correction value obtained from a control rule. The center of gravity of the membership functions whose head parts are cut off and which are corresponding to the respective control rules is obtained and the torque corresponding to the center of gravity is used as the fixed correction signal of a torque instruction. With this constitution, the operation performances which provide an excellent average acceleration, driving comfort and so forth can be obtained. |
