Additional Yaw Moment Control of a 4WIS and 4WID Agricultural Data Acquisition Vehicle

A four-wheel independent steering (4WIS) and a four-wheel independent driving (4WID) agricultural data acquisition vehicle (ADAV) system was designed to monitor and manage the growing status of bio-energy crops. To avoid destroying crops, a changeable wheel gauge and high-clearance design was employed, which brought new problems to the ADAV system: reduced path-following precision and driving stability. Given the dynamic characteristics of the ADAV system, an additional yaw moment control (AYC) system was designed to achieve high path-following precision and stability of the ADAV system. Using the input steering wheel angle and driving speed, the desired yaw rate and sideslip angle were calculated. The difference between the desired and actual yaw rate and that between the desired and actual sideslip angle were employed as feedbacks to obtain an additional yaw moment executed on the ADAV system in real time. The effectiveness of the AYC system was verified in field tests. Experimental results show that the actual yaw rate, sideslip angle and path trajectory were close to the desired ones. Therefore, the stability and path-following accuracy of the ADAV system were improved.

[1]  Raymond H. Byrne,et al.  Design of a model reference adaptive controller for vehicle road following , 1995 .

[2]  Katsumi Moriwaki.  Autonomous steering control for electric vehicles using nonlinear state feedback H∞ control , 2005 .

[3]  Herman Herman,et al.  A System for Semi-Autonomous Tractor Operations , 2002, Auton. Robots.

[4]  Toshihiro Hiraoka,et al.  Automatic path-tracking controller of a four-wheel steering vehicle , 2009 .

[5]  Lav R. Khot,et al.  Modeling and Simulation of a Four-Wheel-Steered Agricultural Robotic Vehicle , 2006 .

[6]  Avesta Goodarzi,et al.  Optimal yaw moment control law for improved vehicle handling , 2003 .

[7]  T. Bakker,et al.  An autonomous robot for weed control: design, navigation and control. , 2009 .

[8]  MICHAEL B. Jones,et al.  Miscanthus for Renewable Energy Generation: European Union Experience and Projections for Illinois , 2004 .

[9]  D. Naidu,et al.  Optimal Control Systems , 2018 .

[10]  Ahmed El Hajjaji,et al.  Fuzzy path tracking control for automatic steering of vehicles , 2003, Robotics Auton. Syst..

[11]  Albert-Jan Baerveldt,et al.  An Agricultural Mobile Robot with Vision-Based Perception for Mechanical Weed Control , 2002, Auton. Robots.

[12]  Kevin L. Moore,et al.  A six-wheeled omnidirectional autonomous mobile robot , 2000 .

[13]  Carl D. Crane,et al.  Autonomous ground vehicle path tracking , 2004, J. Field Robotics.

[14]  S.X. Yang,et al.  Tracking control of a nonholonomic mobile robot by integrating feedback and neural dynamics techniques , 2003, Proceedings 2003 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2003) (Cat. No.03CH37453).

[15]  Charles E. Thorpe,et al.  Integrated mobile robot control , 1991 .

[16]  Philippe Martinet,et al.  High accuracy path tracking for vehicles in presence of sliding: Application to farm vehicle automatic guidance for agricultural tasks , 2006, Auton. Robots.