4 results about "Kinetic information" patented technology

The application discloses a differential dynamic microscopic image acquisition processing method based on a phase spectrum and a related device, relates to the technical field of particle microscopic image processing, and can measure kinetic information such as a diffusion coefficient of Brown particles. Compared with traditional microscopic image technology, the application is a new technology combining light scattering and optical microscopy. The experimental equipment used in the application is simpler, and the experimental steps are fewer; the application is more convenient to combine with other technologies; the application can well solve the sample concentration limitation problem; and the application can measure a wider variety of particles. The method is to use a high-speed camera to shoot time sequence nanoparticle Brown motion microscopic images, then calculate phase changes of two images with different time intervals through a cross-correlation function, find the relationship between the data obtained in the previous steps and the diffusion coefficient, and thus obtain the diffusion coefficient and other kinetic information of the Brown particles.

The application belongs to the field of unmanned aerial vehicle positioning, and particularly relates to an unmanned aerial vehicle ultra-wideband fine positioning method based on artificial noise excitation. Firstly, aiming at the unmanned aerial vehicle ultra-wideband and dynamic information fusion positioning problem, a nonlinear positioning system containing an unmanned aerial vehicle motion state model and an ultra-wideband measurement model is established, and a skew t distribution is introduced to describe the statistical characteristics of the ultra-wideband measurement error; secondly, a filtering algorithm is designed, artificial noise is introduced to the measurement residual in the measurement update process, the residual neighborhood sample is constructed, and the robust scale weight calculated from the residual sample is averaged to obtain the noise enhanced scale weight, which is used for adaptive correction of the measurement update process; finally, the noise enhanced scale weight is used to complete the recursive estimation of the unmanned aerial vehicle state, the measurement update step is executed in a loop, and the unmanned aerial vehicle position estimation result is output in real time. It is suitable for unmanned aerial vehicle ultra-wideband positioning systems under complex interference conditions such as non-line-of-sight error, multipath effect and external disturbance.

The application discloses a kind of machine dog joint gap online compensation method and system, it is related to machine dog joint control technical field.A kind of machine dog joint gap online compensation system, including have: machine dog movement monitoring module and machine dog movement compensation module.The application obtains joint dynamics information and foot end dynamics information by dynamic, can real-time monitoring machine dog in complex environment Motion state, to provide accurate basis for subsequent compensation;By dynamics topological decoupling to machine dog, complex multi-joint system is decomposed into multiple independent joint control unit, improve control accuracy and response speed, make system more stable under different load conditions;By real-time distinguishing joint is in clearance stagnation period or rigid engagement period, can dynamically adjust compensation strategy, different compensation measures are taken for different motion state, to significantly improve motion accuracy and stability.

The disclosure generally relates to motion analysis systems and methods of use thereof. In certain aspects, the system includes an image capture device, at least one accelerometer, and a central processing unit (CPU) with storage coupled thereto for storing instructions that when executed by the CPU cause the CPU to receive a first set of motion data from the image capture device related to at least one joint of a subject while the subject is performing a task and receive a second set of motion data from the accelerometer related to the at least one joint of the subject while the subject is performing the task. The CPU also calculates kinematic and / or kinetic information about the at least one joint of a subject from a combination of the first and second sets of motion data, and outputs the kinematic and / or kinetic information for purposes of assessing a movement disorder.