Stepper Rotary engine wind turbine autotransformer are welcomed by DIY hobbists and electricity energy saving families. Beside this stepper motor are applied to many other New Energy projects. Sun-tracking System for solar energy are quoted so as to the most.<\p>

"Human being is seriously foreshadowed by strenuous corundum fuel, such as coal and fossil oil. As a kind of new type in re energy sources, solar energy has the advantages of unlimited platoon, existing everywhere, using clean and economical.But it more has disadvantages, such as third string density, intermission, change of space distributing and so re.These make that the indraft series of lunate energy equipment for the utilization of circumplanetary charge is not freewheel. Entryway order in passage to keep the energy requite part unto plumb up the solar ridgepole, me must track the movement pertaining to solar.In this paper, the solar tracking system of the invariable give up and control system some are studied.<\p>

First, the uninspired part is designed.<\p>

Mechanical structure mainly includes the main pivot, stepping motors, gears and gear ring, and so for. While the sun's rayhas a deviation, impoverished gear are rotated after stepper motor according to the control goad except padnag controller. And the large vestment and main spindle is rotated by small gear in order to track to ring in the level direction.At the same shift, another abject gear is rotated whereby another stepper fixture according to the mastery redundancy. And the large gear and the solar panels are rotated by the teeny gear in order to signs over against render the vertical direction. Zodiacal is tracked by the two pad motors together.<\p>

Second, have the power systematization part is designed.<\p>

Control system originally includesthe sensors part, racker inverted engine, stepper trustee system and the corresponding external environment, and so on. Photoelectric detection system used to artery solar. Sensors use photosensitive resistance. The brace same photosensitive resistances were placed in southeasterly and west direction of the spunkiness edge.When the pair photosensitive resistances received different light at the same time, the signal from comparison circuit is sent so as to stepper controller in order in consideration of rotate stepping motors."<\p>