Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Development of an automated verticality alignment system for a vibro-lance
AU - Shaban, E. M.
AU - Ako, S.
AU - Taylor, C. James
AU - Seward, Derek W.
PY - 2008/7
Y1 - 2008/7
N2 - This paper describes the automation of a vibro-lance for ground improvement on a construction site. Here, a vibrating probe is lowered into the ground and penetrates downwards by means of a two arm excavator, compacting the surrounding soil. The control system is straightforward to install on a conventional, hydraulically controlled excavator, such as the one utilised for the field tests reported in the paper. The new system supports the operator by automatically maintaining the verticality of the probe, increasing the speed of operation by a factor of three, whilst also yielding improved accuracy and, therefore, a potential increase in tool life. In particular, the research demonstrates the successful design and implementation of Proportional-Integral-Plus (PIP) control systems for joint control on-site. To the authors knowledge, this represents the first operational use of automation for vibro-lance ground compaction.
AB - This paper describes the automation of a vibro-lance for ground improvement on a construction site. Here, a vibrating probe is lowered into the ground and penetrates downwards by means of a two arm excavator, compacting the surrounding soil. The control system is straightforward to install on a conventional, hydraulically controlled excavator, such as the one utilised for the field tests reported in the paper. The new system supports the operator by automatically maintaining the verticality of the probe, increasing the speed of operation by a factor of three, whilst also yielding improved accuracy and, therefore, a potential increase in tool life. In particular, the research demonstrates the successful design and implementation of Proportional-Integral-Plus (PIP) control systems for joint control on-site. To the authors knowledge, this represents the first operational use of automation for vibro-lance ground compaction.
KW - control system design
KW - hydraulic actuators
KW - linear quadratic regulators
KW - proportional-plus-integral action
KW - PID controllers
KW - robot arms
KW - system identification
U2 - 10.1016/j.autcon.2007.11.002
DO - 10.1016/j.autcon.2007.11.002
M3 - Journal article
VL - 17
SP - 645
EP - 655
JO - Automation in Construction
JF - Automation in Construction
SN - 0926-5805
IS - 5
ER -