Abstract: The present invention provides a method and system for real-time high-precision positioning in the deep sea. The present invention, based on a ray theory model, uses an azimuth angle, a transmission delay, a deep-sea vehicle depth and a depth of an acoustic transducer of a water surface monitoring platform as an eigenray emergence angle, an eigenray transmission time, eigenray emergence depth and an eigenray end point depth respectively, quickly calculates an eigenray that connects the water surface monitoring platform with the deep-sea vehicle, accurately calculates a position of the deep-sea vehicle relative to the water surface monitoring platform, and converts the position into absolute position information of the deep-sea vehicle through the latitude and longitude of the water surface monitoring platform, thereby achieving real-time high-precision positioning.

Abstract: The present disclosure provides a damper and an anti-irritable tractor, which relates to the field of pet traction devices and solves the problems that the damper has a short service life and the tractor is easy to lose the anti-irritable effect. The damper comprises a magnetic component and a damping plate, which are magnetically adsorbed and synchronously rotate or stand still when the rotating speed of a winding reel is less than the set speed; when the rotating speed of the winding reel exceeds the set speed, either of the magnetic component and the damping plate is connected with the winding reel, and the other of the magnetic component and the damping plate is connected with a stationary part, and when the magnetic component and the damping plate rotate relatively, the magnetic adsorption force between the magnetic component and the damping plate forms the resistance to limit the rotation of the winding reel.

Abstract: An integrated method and system for communication, positioning, navigation, and timing of a deep-sea vehicle. The method implements integration and deep fusion of communication, positioning, navigation, and timing, and can achieve uniformity of space references and time references between sensors and systems, can reduce difficulty in information fusion, and can implement convenient underwater acoustic communication, real-time/high-update-rate/low-power-consumption/high-precision positioning, high-precision/fault-tolerant navigation, and precise timing. The present invention implements simultaneous operation of four working modes: communication, positioning, navigation, and timing, to fundamentally resolve problems such as insufficient practicability of underwater acoustic communication, low accuracy of navigation and positioning, and no timing function, so as to improve underwater operation efficiency of a deep-sea vehicle.

Abstract: The present invention provides a method and system for real-time high-precision positioning in the deep sea. The present invention, based on a ray theory model, uses an azimuth angle, a transmission delay, a deep-sea vehicle depth and a depth of an acoustic transducer of a water surface monitoring platform as an eigenray emergence angle, an eigenray transmission time, eigenray emergence depth and an eigenray end point depth respectively, quickly calculates an eigenray that connects the water surface monitoring platform with the deep-sea vehicle, accurately calculates a position of the deep-sea vehicle relative to the water surface monitoring platform, and converts the position into absolute position information of the deep-sea vehicle through the latitude and longitude of the water surface monitoring platform, thereby achieving real-time high-precision positioning.

Abstract: An integrated method and system for communication, positioning, navigation, and timing of a deep-sea vehicle. The method implements integration and deep fusion of communication, positioning, navigation, and timing, and can achieve uniformity of space references and time references between sensors and systems, can reduce difficulty in information fusion, and can implement convenient underwater acoustic communication, real-time/high-update-rate/low-power-consumption/high-precision positioning, high-precision/fault-tolerant navigation, and precise timing. The present invention implements simultaneous operation of four working modes: communication, positioning, navigation, and timing, to fundamentally resolve problems such as insufficient practicability of underwater acoustic communication, low accuracy of navigation and positioning, and no timing function, so as to improve underwater operation efficiency of a deep-sea vehicle.

Abstract: A torque receiving assembly, a photosensitive drum and a process cartridge having such torque receiving assembly. The torque receiving assembly having a body having an axis and having an accommodating chamber; a driven shaft disposed coaxially with the body, the driven shaft including a guide stem and a coupling head provided at one axial end of the guide stem, the guide stem having a pair of output arms which extend outwardly in a radial direction, the coupling head having a plurality of projections; wherein a pair of input arms are provided at an inner wall of the accommodating chamber and configured for abutting with the output arms; the guide stem is movable in the axial direction relative to the body, the torque receiving assembly further has a distance-limiting mechanism that defines a maximum distance the driven shaft is able to move relative to the body in the axis direction. The photosensitive drum and process cartridge according to the present invention both include the torque receiving assembly.