51results about How to "Realize high-precision tracking" patented technology

The invention discloses a positioning method and a positioning system of multiple magnetic targets, at least two magnetic targets with a built-in permanent magnet are arranged, and a magnetic sensor array with the sensor number more than 5 times of the magnetic target number is arranged. The positioning method comprises following steps: A. space position of each sensor and magnetic induction strength data in each sensor position under the action of each magnetic target are obtained; B. the magnetic induction strength data obtained from the measurement and the Biot-Savart law are utilized for defining an error objective function; C. a nonlinear optimizing algorithm is utilized for searching the position and direction parameters of the magnetic targets, minimizing the error objective function, and obtaining positioning data of each magnetic target including the position and direction parameters. Simultaneously relative positioning of the measured targets is implemented according to the position data of the multiple magnetic targets in an absolute coordinate system, thus realizing precise positioning and tracing of built-in targets of moving objects or human bodies.

A spacecraft three-super-control multi-level collaborative planning and agile maneuvering method is applicable to the field of spacecraft relative motion control. When the relative attitude of the tracking spacecraft and the target spacecraft is relatively large, the initial relative attitude of the tracking spacecraft and the target spacecraft is obtained by orbit extrapolation, and the first-level controller of the tracking spacecraft is designed to achieve agile maneuvering to the target spacecraft. direction. When the relative attitude of the tracking spacecraft and the target spacecraft is small, the attitude planning of the payload target is carried out through the optical camera. A secondary attitude controller for the load is designed, and the measurement information of the optical load is used as feedback to realize the high-precision pointing control of the load optical axis to the target spacecraft. At the same time, in order to solve the problem of different periods between tracking spacecraft stars and payload controllers, a multi-level collaborative planning method for tracking spacecraft is designed, and the attitude sent by the satellite platform is used for trajectory interpolation to realize high-precision tracking of the payload to the target attitude.

An arc-driven large-bore astronomical telescope is driven by a RE permanent-magnet synchronized arc motor. A control mechanism includes an upper machine and a lower machine; the upper machine is connected with the lower machine through serial communication; the lower machine carries out the real-time control; a motor stator is composed of 15 blocks, each block consists of 9 complete silicon steelplates and two silicon steel plates for reducing the edge effect; an armature winding is arranged according to UVWUVWUVW from right to left; a rotor is composed of 4 blocks and has 120 magnetic steelplates in total, the rotor adopts the torque design for reducing tooth space and is provided with a fastening device; an absolute coder and an incremental coder are simultaneously arranged in the control mechanism signal collecting and comparing links, the former is used for the turnover of a servo motor and the latter is used for testing the position of the servo motor; the signal of the coder is transferred to the DSP module of the lower machine through a singlechip; a drive circuit adopts a digital-driven intelligent power module. The present invention can achieve the needs of long-time, high-precision tracing and observing various celestial bodies and meet the requirements of precision and wide speed regulation in astronomic observation.