2 results about "Initial phase" patented technology

The invention provides a hydraulically controlled frequency stabilization power generating method, which comprises the following steps that: a. an impeller collects flow field energy and the flow field energy is converted into mechanical energy; b. the mechanical energy is transmitted to a parallel-connection pump unit with variable initial phase angles by a power distribution box to be converted into hydraulic energy, and the hydraulic energy is transmitted to a variable hydraulic motor through a current collector; c. a constant speed controller cooperates with a control valve group in a control loop and an electric control variable mechanism in the hydraulic motor to obtain flow entering the hydraulic motor and the optimal matching of displacement of the hydraulic motor, so that the hydraulic motor rotates at constant speed and outputs the mechanical energy, and the mechanical energy is transferred to a generator; and d. the constant-speed stable mechanical energy is converted into constant frequency electrical energy to be output by the generator. The invention adopts a closed hydraulic loop to realize the conversion and long distance transfer of flow field energy, solves the problems that the existing wind power generating device has high cost, difficult constant frequency and voltage regulation, difficult installation and maintenance and the like, and can effectively reduce the construction and operation and maintenance costs of wind power generating equipment.

A delay phase calibration method for an improved alpha-beta scanning method comprises steps of: performing scanning imaging on an orthogonal grid grating sample by using an alpha-beta scanning method,namely, using sinusoidal signals with the operating frequency is f and initial phases being respectively 0 and [Pi]/2 to control a galvanometric vibrating mirror system to deflect the laser beam to scan; confirming the scanning image rotation angle [Theta] according to the relative positional relationship between the scanned image reconstructed using the target trajectory and the target image, and converting the angle value [Theta] into the radian value [Phi], wherein [Phi] is the size of the delay phase when the frequency is f; repeating the above measurement processes to obtain the delay phase size [Phi]k at different frequencies fk; and finally, according to the plurality of sets of measurement results, fitting the f-[Phi] function relationship, namely, the relationship between the scanning frequency and the phase delay function, and completing the delay phase calibration for the improved alpha-beta scanning method. The delay phase calibration method provided by the invention accurately determines the phase delay size and corrects the phase delay due to the inertia of the vibrating mirror system in advance.