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A Review of Rear Axle Steering System Technology for Commercial Vehicles
Haroon Ahmad Khan(하룬 아흐마드 칸),So-Nam Yun(윤소남),Eun-A Jeong(정은아),Jeong-Woo Park(박정우),Chung-Mok Yoo(유충목),Sung-Min Han(한성민) 유공압건설기계학회 2020 드라이브·컨트롤 Vol.17 No.4
This study reviews the rear or tag axle steering system’s concepts and technology applied to commercial vehicles. Most commercial vehicles are large in size with more than two axles. Maneuvering them around tight corners, narrow roads, and spaces is a difficult job if only the front axle is steerable. Furthermore, wear and tear in tires will increase as turn angle and number of axles are increased. This problem can be solved using rear axle steering technology that is being used in commercial vehicles nowadays. Rear axle steering system technology uses a cylinder mounted on one of rear axles called a steering cylinder. Cylinder control is the primary objective of the real axle steering system. There are two types of such steering mechanisms. One uses master and slave cylinder concept while the other concept is relatively new. It goes by the name of smart axle, self-steered axle, or smart steering axle driven independently from the front wheel steering. All these different types of steering mechanisms are discussed in this study with detailed description, advantages, disadvantages, and safety considerations.