Pitch adjusting system of rotation type hydraulic proportional servo drive motor

One kind of rotary hydraulic proportional servo drive motor pitch system, relates to the technical field of wind power, the resolve is to reduce the cost and the failure rate of technical problems. The system includes a wind turbine having blades, generators, pitch control, pitch execution unit and a detection unit, the pitch controller controls pitch execution unit running, the execution unit for controlling the pitch of wind wheel the pitch angle changes, the wind turbine connected to a generator set, used to drive turbines for power generation, said detection means for detecting a paddle wheel angle and wind power generators, and the feedback signal to the pitch controller characterized in that: the pitch execution unit is a hydraulic cylinder and rotary control circuit; the rotary cylinder includes a cylinder block, cylinder end caps at both ends of the cylinder of the two stator and a rotor, the He said wind turbine blade connected to the rotor shaft; the system of the present invention provides a low cost and low failure rate, ready to start power generation.