4results about How to "Improve position detection accuracy" patented technology

The application relates to a high-precision absolute-value magnetic grating device and a mover position detection method. The high-precision absolute-value magnetic grating device comprises a mover, a base and a Hall chip fixed on the base. A plurality of Hall chips form a Hall array, and the Hall array is arranged in two rows. One row of the Hall array is a large-number magnetic induction Hall array, and the other row of the Hall array is a small-number magnetic induction Hall array. The mover is respectively provided with a large-number magnetic head and a small-number magnetic head corresponding to the large-number magnetic induction Hall array and the small-number magnetic induction Hall array. The sensing device is fixed, and the moving part does not need to be provided with a power line and a signal line, so that the reliability of long-distance position measurement is improved. Through the double-row or even multi-row Hall sensing array arrangement form, the measurement principle similar to that of a vernier caliper is adopted, and a large-number and small-number detection combination mode is adopted, so that long-distance position detection can be realized, and the position detection precision is improved.

This invention relates to the field of control system data processing technology, and in particular to an intelligent cleaning system and its working method that employs a robotic arm for cleaning and drying. The system includes a visual data acquisition module that acquires raw image data; an environmental adaptation processing module that outputs an optimized image matrix; a feature recognition module that extracts part contour and position features from the optimized image matrix and outputs coordinate and posture information; a control decision module that fuses the feature information with preset cleaning parameters to generate robotic arm motion commands; and a robotic arm execution module that drives the spray gun to complete the cleaning action and feeds back the position data acquired by the joint encoder to the feature recognition module to form a closed-loop control. This invention compensates for low-light conditions and suppresses stain noise through environmental adaptation processing, enhances robustness through feature recognition combined with a confidence mechanism, and corrects recognition deviations through feedback loops, ultimately achieving accurate detection of part positions and complete cleaning, thus solving the problems of missed cleaning and uneven cleaning.

The application discloses a high-precision straight stroke electric actuator with double-position positioning and relates to the technical field of electric actuators. A Hall sensor assembly is arranged corresponding to the rotor magnet steel of a driving motor; an output gear is fixedly arranged on a center rod and rotates synchronously; a first encoding gear is engaged with the output gear; a second encoding gear is engaged with the first encoding gear and has a tooth number difference with the first encoding gear; two magnetic angle sensors respectively sense the rotation angles of corresponding magnets, and the absolute rotation position of the center rod is calculated in combination with the tooth number difference. The application constructs a double-position positioning system, guarantees the dynamic response speed of the motor, eliminates the position error caused by the gap and wear of the speed reduction mechanism, improves the control precision and stability of the actuator, realizes the position information keeping without power supply or light source in the power-off state, and directly reads the current absolute position without recalibration after secondary power-on.

A fastening tool is provided. The fastening tool has a motor, an anvil, a pin holding portion, a magnet, a first magnetic sensor, a second magnetic sensor, and a control device. The magnet is arranged in a manner that an N pole and an S pole are arranged in a front-rear direction, and is moved in the front-rear direction integrally with the pin holding portion. The second magnetic sensor is arranged at a position further to the rear than the first magnetic sensor. The control device moves the pin holding portion from an initial position to a stop position to the rear based on a detection result of the second magnetic sensor, and moves the pin holding portion from the stop position to the initial position to the front based on a detection result of the first magnetic sensor. The first magnetic sensor and the second magnetic sensor are single-pole detection type sensors configured to detect the same prescribed magnetic pole of the magnet, and are arranged such that an orientation of a first detection surface with respect to a movement axis of the magnet is opposite to an orientation of a second detection surface with respect to the movement axis of the magnet. Accordingly, detection accuracy of the first magnetic sensor and the second magnetic sensor can be improved.