3results about How to "Fast compensation" patented technology

The invention discloses a motor position nonlinear disturbance static feedforward compensation method based on a system model. The method comprises the following steps: selecting a sampling period T and a closed-loop rotating speed v suitable for a system according to frequency characteristics of nonlinear disturbance in a motor; performing an open-loop experiment on the motor servo control system to obtain a discrete transfer function from a control signal to system open-loop output, and establishing a motor system model; the method comprises the steps that a motor is subjected to closed-loop operation at a low rotating speed, rotating speed, current and angle information during steady-state operation is collected, the rotating speed and the current are substituted into a discrete transfer function, an equivalent current value of nonlinear disturbance at each angle is obtained, and then the equivalent current value is negated to obtain a corresponding feedforward compensation value at each angle; carrying out filtering and weighted average on the obtained equivalent feed-forward compensation values to obtain a group of compensation value sequences with fixed compensation point intervals; and the control unit looks up a table according to an angle signal of the encoder to obtain a feed-forward compensation value of a current angle, and superposes the feed-forward compensation quantity on the control quantity at the output end of the control unit, so that feed-forward compensation for nonlinear disturbance is realized.

The invention discloses a brightness compensation method, device and equipment. The brightness compensation method comprises the following steps: performing initial brightness compensation on a display module by adopting a compensation algorithm for removing brightness unevenness; performing secondary brightness compensation on the display module by adopting a color uniformity debugging algorithm; and if the uniformity of the display module after the secondary brightness compensation accords with the optical specification, the compensation of the display module is completed. The embodiment of the invention has a better compensation effect on the brightness compensation of the display module.

This invention discloses a precise differential pressure control system and method for clean areas in pharmaceutical production workshops, including a supply fan, an exhaust fan, a return air volume detection device, an air volume control valve, a differential pressure gauge, a gas flow meter, an angle sensor, and a monitoring module. The monitoring module stores a preset pressure range and a preset adjustment time for each clean area. When the monitoring module detects that the actual pressure value of the clean area is outside the preset pressure range, it generates a corresponding control command based on the magnitude of the deviation and the preset adjustment time. The control module receives the control command and adjusts the speed of the exhaust fan and the opening of the air volume control valve accordingly. This invention achieves intelligent adjustment of clean room pressure by controlling the air volume of the clean room through the monitoring module. Furthermore, the monitoring module can intelligently adjust the speed of the exhaust fan according to the actual pressure, thereby achieving rapid adjustment of the negative pressure clean room pressure.