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Damper Control Using Sliding Mode Algorithm

Article of Honda R&D Technical Review Vol.16 No.2

Summary

Sliding mode algorithms are highly responsive and robust, and this has led to their use in air-fuel ratio control and device control systems. Alteration of the gradient of the switching line enables their ability to suppress disturbance to be freely set, but no applied research has been conducted on this characteristic. In this research, the ability of a sliding mode algorithm to suppress disturbance was lowered to enable the construction of a high-compliance servo control system, and this was employed in shift control in an automated manual transmission, in which compliance control is required during shifting. The sliding mode algorithm has been employed in position control to ensure contact between the sleeve and the synchronizer ring and force control to enable the synchronization of the revolution of the main shaft and counter-shaft through sleeve force. The compliance established between the sleeve and the synchronizer ring by this means has enabled the formerly required mechanical buffer to be eliminated, and shift time has been increased to 350msec. In addition, the stabilization of sleeve force has suppressed bouncing and stoppage of the sleeve and failure of the synchronizer ring during shifting.

Reference

(1) Nonami, K., Tian, H.: Sliding Mode Control, Corona Publishing Co., Ltd., p. 263 (1994)
(2) Yasui, Y., Akazaki, S., Ueno, M., Iwaki, Y.: Secondary O2 Feedback Using Prediction and Identification Sliding Mode Control, SAE paper 2000-01-0936 (2000)
(3) Ueno, M., Akazaki, S., Yasui, Y., Iwaki, Y.: A Quick Warm-up System during Engine Start-up Period Using Adaptive Control of Intake Air and Ignition Timing, SAE paper 2000-01-0551 (2000)
(4) Hashimoto, E., Ishiguro, T., Yasui, Y., Akazaki, S.: High Reliability Electronic Throttle System, SAE paper 2003-01-0708 (2003)
(5) Sakurai, I.: Jidou Hensokuki no Riron to Jissai, Tetsudo-Nipponsha Co., Ltd., p. 341 (1980) (in Japanese)
(6) Ishihara, T.: Douryoku Dentatsu Souchi, Sankaido Publishing Co., Ltd., p. 399 (1980) (in Japanese)
(7) Adachi, S.: Yuza no Tame no Shisutemu Doutei Riron, Corona Publishing Co., Ltd., p. 222 (1993)

Author (organization or company)

Kanako SHIMOJO(Tochigi R&D Center)、Yuji YASUI(Tochigi R&D Center)、Eijiro SHIMABUKURO(Tochigi R&D Center)、Yoshihisa IWAKI(Tochigi R&D Center)

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