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AssigneesToyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo Kenkyusho
InventorsKatsumi Kono, Hiroshi Ito, Kagenori Fukumura, Shinya Nakamura, Masataka Osawa, Ryoichi Hibino, Masatoshi Yamada
Estimating the term…
A clutch slip control device includes: a slip revolution speed detecting circuit for detecting an actual slip revolution speed of a clutch; a memory unit for storing constants set to satisfy response and stability of a feedback control system of the slip conditions, the constants being determined by a high-order function approximating variation in input-output frequency characteristics of a plant input for actuating the clutch and the actual slip revolution speed; a first calculation circuit for calculating a first parameter using the constants stored in the memory unit, the first parameter discretely reflecting past data of the plant input, which are obtained in a current feedback control cycle through in a cycle executed a plurality of times before; a second calculation circuit for calculating a second parameter using the constants stored in the memory unit, the second parameter discretely reflecting past data of a deviation of the actual slip revolution speed from a target slip revolution speed, which are obtained in the current feedback control cycle through in the cycle executed a plurality of times before; and a plant input determination circuit for determining a next plant input based on the first parameter and the second parameter.
A method of manufacturing a slip control device which outputs a plant input for actuating a clutch so as to make an actual slip revolution speed coincident with a target slip revolution speed and adjusts slip conditions of said clutch based on said plant input, said method comprising the steps of:
The method of manufacturing a slip control device according to claim 5, wherein said step (b) further evaluates a third value, said third value being determined by taking account of a transfer function from a torque variation or torque disturbance, which is applied to said feedback control system to vary said slip revolution speed, to said actual slip revolution speed, as well as said first high-order weighting function, said second weighting function, and said transfer function from said target slip revolution speed to said control deviation.
Dependencies are inferred from the claim text.