2 results about "First order system" patented technology

The application discloses an aero-engine thrust fast response redundant control method and system considering combustion delay, and belongs to the technical field of aero-engine control. The method steps are as follows: an open-loop transfer function L of main fuel flow and tail nozzle throat area respectively controlling thrust is established based on a desired thrust closed-loop bandwidth; a decoupling condition between the variable tail nozzle throat area and the thrust is set to eliminate the mutual influence between them; four undetermined RTM controller functions in the transfer function L are solved; the actuator transfer functions of the main fuel flow and the tail nozzle throat area are set as first-order systems for solving; system identification is carried out at an engine steady-state working point to obtain a transfer function of a difference between the main fuel flow and the tail nozzle throat area relative to a steady-state value to a difference between the thrust and the steady-state value; the transfer function L is solved, and then the RTM control is completed according to the transfer function L, so that the fast response control of the thrust is realized. The application solves the key technical problems in the prior art.

The application provides a virtual synchronous generator power and frequency decoupling control method, and belongs to the technical field of converter control. The application adds a differential feedforward control in a transfer function of active power tracking control of the virtual synchronous generator, reduces the active power tracking control to a first-order system, and enables the active power tracking control to quickly respond to a power instruction without overshoot. The application introduces proportional control, differential control and high-pass filtering in a transfer function of frequency support control of the virtual synchronous generator, eliminates a steady-state error caused by damping, improves zero-pole freedom of the frequency support control, eliminates coupling of the active power tracking control, and improves power output capability of the frequency support control.