Research on Control Strategy about Synchronous Process for Automatic Mechanical Transmission

Abstract:

The working principle of lock ring synchronizer was expounded and the synchronous working process of automatic mechanical transmission (AMT) at each stage was analyzed in this paper. Based on the control principle of discrete PID, the corresponding control strategy to three stages was proposed. Then, the degree of jerk when starting of motor vehicle was used as an evaluation criterion. Finally, the bench tests were carried out to verify the feasibility of the proposed control strategy. The experimental results indicate that the control strategy can ensure the demand of jerk, meet the limited synchronous time, improve the smoothness and comfort of gear shift, reduce the wear of the synchronizing ring and increase the lifetime of synchronizer.

• Periodical: Applied Mechanics and Materials (Volumes 220-223)
• Pages: 1800-1804
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.220-223.1800
• Online since: November 2012
• Authors: Ling Ling, Jun Hao Li, Jiao Li
• Keywords: AMT, Bench Test, Discrete PID, Lock Ring Synchronizer, Synchronous Process

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