11 results about "Fast tracking" patented technology

The application belongs to the cross field of electric power system and power electronics technology, and particularly relates to a regional power grid power quality treatment method for multi-type subject access. By introducing advanced phase compensation, the phase lag of the detection link is calculated and fully compensated in real time, so that the extracted harmonic component is instantaneously synchronized with the actual harmonic of the power grid. In combination with an adaptive hybrid modulation technology, the dominant harmonic frequency band can be focused on compensation. A fully decoupled control based on feedforward is adopted, which eliminates the cross coupling between the d and q axis currents, so that the inner loop controller can realize fast tracking with almost no overshoot. Meanwhile, the adaptive adjustment mechanism of the PLL bandwidth ensures that the synchronization signal is fast and robust when the power grid changes.

The utility model relates to a kind of tracking type line instrument, including pedestal, quick tracking mechanism and fine adjustment mechanism, the top of the pedestal is equipped with rotating chassis and rotating support sequentially arranged along vertical direction, instrument body is equipped on the rotating chassis, the quick tracking mechanism includes the first motor being equipped on rotating support, the output of the first motor is equipped with first gear, the second gear meshing with first gear is equipped on the pedestal, the fine adjustment mechanism includes the cylinder being equipped on rotating support, the second motor is equipped in the cylinder, the output of the second motor is connected with screw rod, nut is threadedly cooperated on the screw rod, the nut is slidingly fitted in the cylinder, the end of the nut away from second motor is vertically equipped with guide rod, the rotating chassis is equipped with sliding slot, the end of the guide rod away from nut is slidingly fitted in sliding slot;The tracking type line instrument of the new type of the utility model can quickly and accurately track target position.

A sample rate converter circuit for receiving a first signal at a first sample frequency and outputting a second signal having a second sample frequency. The sample rate converter circuit includes a rate estimator circuit structured to receive a first clock signal having the first sample frequency and a second clock signal having the second sample frequency and structured to generate an estimate of a ratio of the first sample frequency to the second sample frequency. The rate estimator circuit includes an instantaneous rate estimator circuit structured to process the first clock signal and the second clock signal to provide a noisy ratio of the first sample frequency to the second sample frequency and a low pass filter structured to filter the noisy ratio of the first sample frequency to the second sample frequency based on filter coefficients adjustable by a time constant controller of the rate estimator circuit.

The application discloses a quadruped robot composite control method and system based on a super-helix sliding mode anti-interference model, wherein the method comprises the following steps: firstly, a single rigid body dynamics model containing unknown disturbance is established; secondly, a super-helix sliding mode disturbance observer is designed to perform high-precision and strong-robust estimation on the translational and rotational disturbances; in the support phase, the disturbance estimation value is fed forward to a model predictive controller to solve a constrained optimization problem to generate optimal foot end force; in the swing phase, a virtual model control is adopted to realize fast tracking of the foot end trajectory; and the smooth switching of the control strategies in the support phase and the swing phase is realized through contact state detection. The application can effectively improve the motion stability, trajectory tracking accuracy and anti-interference ability of the robot in an unstructured environment.

The application discloses a gaze fast tracking technology based on field of view modulation and belongs to the technical field of photoelectric detection and target tracking. The application comprises the following steps: separating composite light, collecting images of corresponding light through a sensor device, and performing quality evaluation on the images to obtain image quality indexes; a central processing module dynamically adjusts the weight of each waveband in a tracking loop based on the image quality indexes; a weighted sum of target miss distances of each waveband detected by the sensor device is obtained according to the weight; a deflection instruction is generated according to the comprehensive miss distance, and the deflection instruction is sent to a control driving module; and the angle is adjusted through the control driving module to drive a light beam deflection execution device. The application physically eliminates parallax through a common-aperture optical path, improves tracking accuracy, realizes environmental self-adaptation through dynamic weight control, ensures stable tracking in the whole period, greatly improves the system response speed through a low-inertia light beam deflection device, and realizes fast gaze locking on a high-speed maneuvering target.

The application discloses a closed air Brayton cycle control system and operation method of a coupling heat pipe cooling micro reactor, and belongs to the technical field of power cycle control. The system comprises a turbine bypass control valve, a storage tank and its import and export gas charging and discharging valves, a bypass-volume composite control system and a reactor power control system. The storage tank is used for storing working air, the bypass-volume composite control system adjusts the turbine bypass valve and the storage tank valve opening degree according to the load instruction, and the reactor power system adjusts the reactor drum to control the reactor power through PID control according to the turbine inlet temperature and the load signal. The method realizes the fast tracking of the external instruction of the power generation power when the load changes by coordinating the bypass adjustment, the working medium access and the reactor power control, simultaneously ensures the real-time matching of the reactor power and the cycle side demand, and effectively suppresses the fluctuation of the key parameters such as the heat pipe temperature and the fuel temperature. The application significantly improves the flexibility, the efficiency and the environmental adaptability of the closed air Brayton cycle during the variable load operation.

The application discloses a kind of method and system based on the quick tracking of multi-person movement, comprising the following steps: establishing a recognition model, the image collected is input into recognition model;Human body area coordinates, human body recognition reliability, face area coordinates, human body area image and face area image are output by recognition model;Face area image output by recognition model is compared with face area image in storage module;If not match, update storage module, and according to the updated storage module, display module is synchronously updated;If match, according to the human body recognition reliability, human body area image output by recognition model is judged, and according to the difference judgment result, storage module is updated, and according to the updated storage module, display module is synchronously updated.The application is used to solve the technical problems of long operation time and ID repetition and waste when multi-target tracking is carried out in prior art.

This invention discloses a staring fast tracking technology based on focal plane modulation, relating to the fields of photoelectric imaging and target tracking. The technology includes: performing initialization and wide-area scanning, controlling a simulated micromirror array to scan the scene, detecting multiple targets and recording the corresponding micromirror deflection angles; performing target locking and resource allocation, dynamically allocating micromirror unit groups to each target, and driving the micromirror units to stably guide the target beam to a predetermined area of ​​the image sensor; performing focal plane modulation scanning, driving the image sensor to continuously scan along the optical axis, simultaneously acquiring multiple frames of images and generating sharpness curves for each target as the focal plane position changes; and performing multi-target image synthesis, extracting the sharp image region of each target at the optimal focal plane position, and fusing it with the global scene image to generate a panoramic sharp image. This invention enables simultaneous tracking and sharp imaging of multiple spatially discrete targets at different distances, significantly improving response speed and imaging efficiency in multi-target scenes.

This application relates to target tracking and provides a multi-target tracking method. It acquires measurement data of the target to be tracked using at least two sensors to obtain a first set of measurement data pairs. Then, based on preset constraints, related measurement data pairs in this first set are eliminated to obtain the true target. Next, the starting point of the true target's trajectory is determined using an FCM algorithm and the measurement data pairs of the true target. Then, the true target is correlated using the FCM algorithm and the real-time measurement data of the true target to obtain a stable trajectory. Finally, the true target is tracked based on the starting point and the stable trajectory. This application eliminates false targets using preset constraints and obtains the starting point of the trajectory based on the FCM algorithm in the trajectory initiation part, and uses FCM to determine the stable trajectory of the true target in the trajectory correlation part, thereby achieving the tracking of the true target with short processing time and fast tracking speed.

The application provides a clock data recovery method with fast tracking and bandwidth stabilization mechanism, which is applied to a clock data recovery circuit. The method comprises the following steps: a phase detection circuit detects the relative position of serial data and a sampling clock in an adaptive control period to generate a tracking direction; an adaptive tracking circuit directly outputs the tracking direction corresponding to a first clock cycle in a clock cycle as an adaptive tracking direction, and only when the current tracking direction corresponding to each clock cycle after the first clock cycle exists and is different from the previous tracking direction corresponding to the previous clock cycle, the current tracking direction is used to replace the previous tracking direction and is output as the adaptive tracking direction, and the actual tracking direction is generated according to the change of the adaptive tracking direction; and a clock control circuit adjusts the phase of the sampling clock according to the actual tracking direction.