Systems, vehicles, and methods for maintaining rail-based arrays of photovoltaic modules

摘要: A system includes an elongated rail including support surfaces and a mounting surface disposed between the surfaces. Photovoltaic modules can be coupled to raised relative first maintenance vehicle include cleaning head, actuator, motor, legs. The legs suspend head over photovoltaic respectively movably so as laterally sequentially move parallel across each of responsive actuation motor. At least portion vertically movable disengaged position spaced apart from engaged in contact with at one actuator.