5results about How to "Achieve speed" patented technology

The application relates to the technical field of sewage treatment, in particular to a pressure dosing method and system for sewage treatment. The application first establishes a stable gas pressure environment in a dosing device, and uses a high-precision pressure sensor to collect pressure data in real time; based on Bernoulli equation, a total pressure-dosing flow relationship model and a dosing pipe static pressure-dosing flow relationship model of the dosing device are constructed, and the applicable flow intervals of the two models are determined; after a target flow value is input, the corresponding model is selected according to the interval to calculate the target total pressure or static pressure value; the system adopts a hierarchical PID control strategy, a primary PID is responsible for total pressure adjustment, and a secondary PID is responsible for static pressure fine adjustment, so that the rapidity and accuracy of pressure control are cooperatively ensured; meanwhile, the actual dosing amount is continuously monitored through a flow measurement unit, and when the flow deviation exceeds the set range, a calibration program is automatically started, and the pressure-flow model parameters are optimized in real time; finally, through closed-loop control of pressure and flow, high-precision adjustment of the dosing flow is realized.

The application discloses a kind of unmanned ship GNSS / INS integrated navigation method considering control information, belong to unmanned ship navigation field.The method includes the following steps: construct CNN-LSTM-AM model, with IMU data and control information as input, output forward and lateral velocity;GNSS is normal, IMU is solved to position, velocity and attitude by mechanical arrangement, and after difference with GNSS position, input filter fusion, output error, the result of mechanical arrangement is corrected and velocity is calculated;While using IMU data, control information and velocity train model;Lock is lost, and real-time IMU data and control information are input into model, and forward and lateral velocity are predicted, and then difference with the velocity calculated by mechanical arrangement, and then input filter is carried out state update, and error data is obtained to correct the result of mechanical arrangement, realize continuous state estimation.The application can inhibit INS error divergence under GNSS denial environment, and improve positioning accuracy.

The application provides a knee joint exoskeleton device and a lower limb outdoor walking aid exoskeleton robot. The device comprises: a thigh contraction connecting rod; a knee joint upper connecting rod connected to the rotating end of the thigh contraction connecting rod in a rotatable manner; a knee joint lower connecting rod connected to the other end of the knee joint upper connecting rod in a rotatable manner; and a knee joint elastic adjustment assembly having an uphill and downhill mode and a flat ground mode. The application switches to the flat ground mode when walking on the flat ground. When the leg is bent and straightened, the knee joint elastic adjustment assembly stores the flat ground elastic potential energy. When the leg is straightened and bent, the knee joint elastic adjustment assembly releases the flat ground elastic potential energy to provide power assistance. The knee joint elastic adjustment assembly switches to the uphill and downhill mode when going uphill and downhill. When the leg is straightened and bent, the knee joint elastic adjustment assembly stores the uphill and downhill elastic potential energy. When the leg is bent and straightened, the knee joint elastic adjustment assembly releases the uphill and downhill elastic potential energy to provide power assistance, which can adapt to different outdoor terrains.

The invention relates to the technical field of vehicle-mounted atmosphere lamp program control systems, and discloses a plastic optical fiber action state adjusting method and system for a vehicle-mounted atmosphere lamp. On the basis of driver emotion analysis information, in combination with an AI algorithm and plastic optical fiber light-emitting action scene type information based on big data storage, scientific classification analysis of vehicle-mounted atmosphere lamp plastic optical fiber light-emitting action scene types is carried out, and self-adaptive matching of vehicle-mounted atmosphere lamp plastic optical fiber light-emitting action scenes based on driver emotion fluctuation is achieved; carrying out reliable real-time analysis on the plastic optical fiber light-emitting control instruction parameters of the atmosphere lamp according to the light-emitting action scene matching information of the plastic optical fiber in the vehicle and by combining an intelligent search algorithm and the scientific plastic optical fiber light-emitting control instruction parameters; the vehicle-mounted atmosphere lamp plastic optical fiber light-emitting control instruction is safely and efficiently planned based on the emotion fluctuation of the driver, and the humanization and intelligence of the light-emitting effect control of the vehicle-mounted atmosphere lamp are improved.

This utility model relates to the technical field of packaging material testing equipment, and in particular to a device for testing the tensile strength of plastic bag handles. It includes a tensile strength testing machine with a mounting plate connected to its upper and lower ends. A controller is installed on the tensile strength testing machine. A compression plate is slidably connected to the front of the mounting plate, and a limit block is fixedly connected to the rear of the mounting plate. A top block is slidably connected within the limit block, and the top block engages with the compression plate. An adjusting screw is rotatably connected to the front of the mounting plate and threadedly connected to the compression plate. A return spring is sleeved on the rear of the top block. By linking a rangefinder with an auxiliary light, the auxiliary light adjusts the crosshair projection position according to the distance between the upper and lower mounting plates detected by the rangefinder, forming a vertically aligned reference. This ensures that the upper and lower ends of the plastic bag are held in the same vertical direction, achieving vertical clamping of the plastic bag and improving the accuracy of the test data.