5results about How to "Avoid adjustment errors" patented technology

The application discloses a driving mechanism, a stand column, a transmission device and a flexible tracking support, and belongs to the technical field of photovoltaic power generation. The driving mechanism is used for driving a photovoltaic module installed above a cross beam to track the rotation of the sun, and comprises: a fixed end of a telescopic rod is fixed with the cross beam, and the other telescopic end is connected with a sliding pin; a rotation point of a slide rail relative to the cross beam is fixed; the sliding pin is slidably installed on the slide rail; a rotating shaft of a rotating disc is fixed relative to the rotation point of the cross beam; a far end of a first connecting rod is hinged with the sliding pin, and a near end of the first connecting rod is hinged on an eccentric position of the rotating disc; and a driving piece is used for driving the rotating disc to rotate. The application realizes the cooperative locking of the flexible tracking support with multiple structures, cooperates with three self-locking points, forms multiple protections, greatly improves the anti-deformation capability of the support under extreme wind load, and reduces the safety hidden danger.

The application discloses an electric submersible screw pump energy consumption control method and device, and a medium, and relates to the technical field of oil well production control. The method comprises the following steps: measuring the pressure in the well in real time based on the downhole sensor of the electric submersible screw pump, so as to obtain the measured value of the current liquid level depth, and comparing the measured value of the liquid level depth with a preset target liquid level depth, so as to obtain a liquid level deviation value; if the absolute value of the liquid level deviation value is less than or equal to a preset deviation threshold value, a periodic speed disturbance signal is superimposed on the basic speed of the motor of the electric submersible screw pump, so as to generate periodic fluctuations, and the liquid level depth response data is continuously collected; the response rate of the liquid level depth to the speed disturbance signal is analyzed based on the response data, and it is judged whether the speed of the motor of the electric submersible screw pump is in an optimal energy consumption interval under the current liquid supply capacity; if the speed of the motor of the electric submersible screw pump is not in the optimal energy consumption interval, the speed adjustment amount is calculated based on the response rate, and the basic speed is adjusted until the speed of the motor of the electric submersible screw pump reaches the optimal energy consumption interval.

This invention discloses a tension-adaptive yarn feeding device for cotton yarn production, belonging to the technical field of yarn feeding devices. It includes: a support plate frame, mounted on a frame in a cotton yarn production workshop via several assembly trays fixed to one side; and two tensioning rollers, respectively assembled at stroke notches at the top and bottom of the support plate frame, capable of displacement along the extension direction of the stroke notches. This invention, by employing a structure of track pins and helical tracks in the adjustment assembly, directly converts the axial linear displacement of the electric push rod into the rotational motion of the transmission column, and further amplifies and transmits the motion through gear pairs. This constructs a continuous motion conversion chain from linear drive—rotational output—displacement adjustment, breaking through the traditional method of adjustment relying on multi-stage linkages or single lead screws. This gives the tensioning roller adjustment process higher response sensitivity and transmission stability, significantly ensuring tension adjustment accuracy.

The invention discloses an inflow water quality prediction method based on a double-branch multi-head attention mechanism, and the method comprises the following steps: S1, collecting the operation parameters and water quality indexes of aeration equipment from a sewage plant database according to a time interval, and constructing a time sequence data set; s2, extracting periodic features, trend features and hysteresis features from the time sequence data set; s3, a Trend Attention LSTM model is constructed, the model comprises a numerical feature processing path and a trend feature processing path, and future multi-step water quality index predicted values and descending / invariant / ascending water quality change trend classification results are output; s4, training a Trend Attention LSTM (Long Short Term Memory) model by utilizing the data set, and storing a model file; and S5, collecting data in real time by using an edge calculation unit, obtaining multi-scale features after processing in the step S2, inputting the multi-scale features into the Trend Attention LSTM model loaded with the model file, and outputting future multi-step water quality prediction values and trend judgment.

The invention relates to a denitration NOx control method and device based on an intelligent control strategy and electronic equipment, and relates to the technical field of power plant automatic control, and the denitration NOx control method comprises the steps that according to a monitoring instrument state signal of a reactor, process reaction parameters corresponding to the reactor are obtained; predicting a first NOx concentration corresponding to the reactor by using different concentration prediction algorithms according to the process reaction parameters; determining a second NOx concentration corresponding to the reactor based on the first NOx concentration and the process reaction parameters through cooperative operation of a concentration prediction model and a state compensator; and performing ammonia flow closed-loop regulation by using the first PID controller based on the second NOx concentration and the ammonia flow feed-forward control instruction, and generating an ammonia flow control instruction corresponding to the reactor. The first PID controller is combined with the second NOx concentration and the ammonia gas flow feed-forward instruction for closed-loop adjustment, the large lag characteristic of the denitration system is counteracted, and the ammonia spraying flow control precision is improved.