6results about How to "Suppress shock" patented technology

This invention discloses a time-delay-resistant and energy-saving motion control method and system for a flat-type all-wheel-drive AUV. The invention includes: constructing a six-degree-of-freedom hydrodynamic model of the AUV based on submarine maneuverability theory; identifying the setpoint pure time delay and rotational acceleration characteristics of the propeller through multi-condition testing, and constructing a nonlinear propeller dynamic model including a pure time delay element and a nonlinear rotational speed dynamic response model; constructing a composite control architecture integrating a dual-loop PID controller, a Smith predictor, and a model reference adaptive controller (MRAC); using the Smith predictor to perform explicit time delay compensation for the vertical plane motion subsystem, and using MRAC to update the adaptive gain online to compensate for model mismatch. This invention effectively suppresses high-frequency pitch angle jitter, reduces ineffective commutation movements and energy consumption of the propeller, and significantly improves the high-speed operational stability and endurance of the flat-type AUV.

The application provides a laser satellite network and a routing stability control method and controller thereof. The method comprises: acquiring current transmission rate levels and historical transmission rate levels of each laser inter-satellite link in the laser satellite network, wherein the transmission rate level is a limited number of discrete levels obtained by quantizing an instantaneous transmission rate; comparing the current transmission rate level with the historical transmission rate level to determine whether a link state changes; when the comparison result indicates that the link state changes, calculating a cost penalty according to a magnitude of the transmission rate level change, and resetting a stability count to an initial value; when the comparison result indicates that the link state does not change, incrementing the stability count, and calculating a cost reward according to the stability count; calculating a link cost according to a reference cost, the cost penalty and the cost reward; and selecting a data transmission path composed of one or more laser inter-satellite links from the plurality of laser inter-satellite links based on the link cost.

The application relates to the technical field of point cloud registration, in particular to a positioning method for numerical control machine tool machining, which comprises the following steps: taking the curvatures of standard data points in a standard point cloud as machining complexity; obtaining a real-time point cloud of a raw material to be machined; in one iteration of an ICP algorithm, a transformation matrix of the real-time point cloud is updated with the minimum matching error as the target until the change of the minimum matching error between two adjacent iterations is less than a preset value or the iteration number reaches a maximum number, and the transformation matrix is taken as a target matrix; and the raw material to be machined is adjusted based on the target matrix to complete positioning. According to the technical scheme, the influence of the machining complexity of each position point on the machining allowance of a structural member can be considered, and accurate positioning of the raw material to be machined is realized.

A method and device for managing link state in an MRP ring network, the method comprising: in an open loop state, in response to receiving a first MRP link state packet from any one of two ring ports of an MRM, starting a time window with the time of the receiving as the starting point; within the time window, in response to receiving a first MRP link state packet from the other of the two ring ports, and the link states indicated by the first MRP link state packets received by each of the two ring ports being different, determining the ring port receiving the first MRP link state packet first as a priority port, and determining the ring port receiving the first MRP link state packet later as a sub-priority port; before determining that the forwarding path is in a stable state, processing each MRP link state packet received from the priority port in turn, and not processing each MRP link state packet received from the sub-priority port, effectively suppressing the occurrence of ring network oscillation.

This application provides a hybrid truck platooning control method based on multi-factor compensation, applicable to scenarios such as ports, logistics, and mines. The method first obtains the powertrain types and real-time loads of the leading and following trucks in the platoon. The leading truck continuously broadcasts information including its target acceleration, real-time acceleration, and load status via a vehicle-to-everything (V2X) network. Upon receiving this information, the following truck dynamically calculates a cooperative safe distance that fully considers both emergency braking risk and normal following oscillation risk, taking into account its own load and the powertrain types of both trucks. Then, based on the leading truck's target acceleration and considering powertrain differences and its own load, the system generates a target acceleration command for the following truck using a multi-factor compensation strategy. This application's method suppresses platooning oscillations and ensures a safe following distance by compensating for the response differences of different powertrains.

This invention relates to the field of electrical variable measurement technology, and more particularly to an electrical parameter sampling rate adjustment system for intelligent acquisition terminals, comprising: an electrical parameter measurement module for acquiring instantaneous phase voltage and current values ​​and calculating instantaneous apparent power; a transient disturbance measurement module for processing the instantaneous apparent power to obtain differential energy, and outputting transient change characteristic values ​​based on the differential energy and the local background mean; a measurement noise suppression module for inputting the transient change characteristic values ​​as observations into a Kalman filter, calculating the temporal variance of the innovation value sliding buffer queue, constructing an adaptive measurement noise covariance by combining the maximum local background mean within the historical window, dynamically adjusting the Kalman gain, and outputting a posterior state estimate; and a sampling clock adaptive module for calculating the target sampling rate for the next time step based on the absolute deviation of the posterior state estimate using a nonlinear compression mapping function. This invention improves the stability and accuracy of electrical parameter measurement.