A robot capable of traversing several hundred metres long rows of solar tables was developed as part of a large EU funded Framework-7 project. Like most other designs, the device hangs from small wheels which follow the upper edge of the panel frames. However, this particular configuration differs from many other in that two traction units are employed (one at the top and one at the bottom). This allows the robot to align itself at an angle to the direction of movement thus facilitating the removal of snow and other debry. A further enhancement to this concept is, by sensory integration, the ability of the robot to align itself automatically. This is important where solar tables are not exactly aligned with one another but slightly staggered along the length of the rows.
Seen here being tested in desert conditions in Castuera, Spain.