7results about How to "Compensate for interference" patented technology

A pressure sensor calibration method based on environmental interference compensation relates to the technical field of pressure sensor calibration, and comprises: collecting the output value and environmental data of a target pressure sensor and marking the collection time, and setting a collection cycle; statistically analyzing the environmental data of the target sensor in each historical collection cycle, and obtaining key values ​​of various types of environmental parameters; constructing a feature database, and performing simulation experiments based on the environmental feature set in the feature database, and obtaining pressure deviation values ​​under different environmental feature set conditions; constructing a deviation output model, and inputting the environmental data of the current collection cycle into the feature database for feature matching, and selecting to perform compensation adjustment on the target pressure sensor based on the deviation output model according to the feature matching result, or selecting to perform flexible compensation adjustment operations on the target pressure sensor, thereby significantly improving the measurement accuracy, stability and adaptability of the pressure sensor.

The invention discloses a view finding control method of head-mounted equipment, and relates to the technical field of intelligent wearable equipment. The method comprises the steps of determining a fixation point of a wearing user in a three-dimensional space based on a sight line direction and a fixation depth; projecting the fixation point to a pixel plane of a main camera of the head-mounted device to obtain a corresponding pixel coordinate; and based on the pixel coordinates and a preset shooting composition rule, adjusting a target corresponding to the fixation point to a shooting picture framed by the electronic cutting window according with the preset shooting composition rule by adjusting the position of the electronic cutting window in the shooting picture of the head-mounted device or adjusting the orientation of a main camera of the head-mounted device. By fusing the eye physiological signals, the head space posture and the camera space geometry, the three-dimensional coordinates of the fixation point of the wearing user are accurately calculated, the head-mounted equipment is intelligently controlled to accurately shoot the image with the target corresponding to the fixation point of the wearing user as the center, and the function of automatically shooting high-quality pictures is achieved.

The application discloses a self-adaptive thermometer calibration method, which comprises the following steps: placing a thermometer to be calibrated and a high-precision reference temperature and humidity device in a same closed constant-temperature and constant-humidity calibration environment, and starting at a same sampling frequency; presetting a temperature and humidity gradient of the closed constant-temperature and constant-humidity calibration environment, and controlling the closed constant-temperature and constant-humidity calibration environment to adjust according to the preset temperature and humidity gradient; controlling a temperature and humidity sensing module to continuously collect temperature original data for multiple times, and performing sliding average filtering processing to obtain temperature data to be calibrated of the thermometer and standard temperature and humidity data of the high-precision reference temperature and humidity device under the temperature and humidity gradient, and form a calibration data set; and performing temperature calibration operation based on the calibration data set, and obtaining calibrated temperature data by using a third-order polynomial fitting algorithm.

This invention relates to the field of tire manufacturing equipment technology, specifically to a control system and method for the coordinated control of the feeding roller and forming drum in tire rubber strip winding. The system includes core control, signal acquisition, drive execution, and auxiliary support modules, forming a closed-loop architecture through electrical connections. The core control module uses a 1ms operation cycle PLC and an industrial SD card. The signal acquisition module integrates a tension sensor, a laser displacement sensor, and an incremental encoder. The drive execution module includes a dual servo system, a floating roller, and a tension roller mechanism. The control method achieves master-slave axis synchronization through real-time calculation using electronic gears, performs roll diameter compensation based on volume conservation, employs a feedforward + feedback dual-layer control, and combines a tanh-type S-surface controller to correct tension and floating roller position errors. It adapts to independent parameter settings and inter-layer error clearing for multi-layer winding. This invention improves the rubber strip bonding accuracy and thickness consistency, enhancing system adaptability and production reliability.

A microwave sensor based on a differential substrate integrated waveguide reentrant resonant cavity and microfluidic technology, the sensor has a superimposed upper cover plate and a lower bottom plate, the upper cover plate and the lower bottom plate both contain a top metal layer, an intermediate dielectric layer and a bottom metal layer; two resonant cavity monomers are formed side by side between the upper cover plate and the lower bottom plate, each of the resonant cavity monomers is embedded with a microfluidic chip, and the two substrate integrated waveguide reentrant resonant cavity monomers are connected in parallel and connected in series by a power divider. The present invention embeds the microfluidic chip into the substrate integrated waveguide reentrant resonant cavity based on the differential structure configuration, utilizes the advantages of differential structure compensation for environmental interference, high concentration of the reentrant resonant cavity electric field and microfluidic chip can accurately control microfluids, and obtains a high-sensitivity and high-precision sensor with little interference, non-invasive, and easy to integrate with other planar circuits.

The application relates to the technical field of motor control, and discloses a design method of an outer rotating motor combined with a cylinder and a disc body, which comprises application to a microcontroller; the method obtains the steady-state temperature and the electrical angular velocity of the motor, calculates the thermodynamic load margin and the cross-domain temperature gradient; the cross-domain temperature gradient is used to fine-tune the reference high-frequency injection frequency, and a reconstructed high-frequency voltage instruction is generated; corresponding cross-saturation coupling matrices are obtained in a low-speed area and a medium-high-speed area respectively, and a full-speed-area continuous cross-saturation coupling matrix is generated according to a smooth transition function; an overall loss cost function is constructed based on the instruction torque and the thermodynamic load margin, an extreme value optimization is performed on the current instruction set, and finally a pulse width modulation signal is output. The application introduces the temperature factor into the electromagnetic control process, compensates for the magnetic impedance drift interference, realizes the smooth transition of the high-speed control area and the low-speed control area of the motor, and effectively controls the operation loss of the motor under the limitation condition.

The present invention provides a motor control method and a motor control device, which can fully compensate for the cogging effect generated, thereby greatly reducing the influence of the cogging effect to achieve the desired action characteristics. By using an inverse correction control system and a disturbance observer control system, an inverse correction control for applying inverse correction to the cogging effect state is combined with a disturbance observer control for disturbance. Inverse correction is applied to the cogging effect state to roughly remove the influence of the cogging effect, and the influence that cannot be reduced by the inverse correction control is reduced by the disturbance observer control for the disturbance.