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246 results about "Time optimal" patented technology

Optimal Time is a machine learning algorithm that looks at each user’s individual app engagement patterns and automatically sends messages when users are most likely to open.

System of trajectory planning for robotic manipulators based on pre-defined time-optimum trajectory shapes

A system for providing the reliable and numerically efficient generation of time-optimum trajectories with easy-to-track or continuous acceleration profiles for simple and blended moves of single- and multi-arm robotic manipulators, such as an extension and retraction move along a straight line or a rotary move following a circular arc, with velocity, acceleration, jerk, and jerk rate constraints. A time-optimum trajectory is the set of the position, velocity, and acceleration profiles which describe the move of a selected end effector along a given path in the shortest time possible without violating given constraints, with a special case being an optimum abort trajectory, which brings the moving arm into complete rest in the shortest time. The invention involves firstly identifying the set of fundamental trajectory shapes which cover all possible combinations of constraints for a given category of moves, e.g., a move along a straight line or along a circular arc; next, decomposing the fundamental shapes into segments where a single constraint is active; and, then, determining the time optimum paths in the segments. As a result, a unique design of time-optimum trajectories is produced based on a set of pre-defined trajectory shapes. The invention also involves the blending of simple moves into a single trajectory by decomposing trajectories of the individual moves into their orthogonal components and overlapping them for a given time interval, which results in a non-stop move along a smooth transfer path.
Owner:BOOKS AUTOMATION US LLC

Real-time coordination and control method of photovoltaic micro-grid system

The invention relates to the technical field of photovoltaic micro-grid control, and particularly discloses a real-time coordination and control method of a photovoltaic micro-grid system. A central real-time optimal control layer and a local control layer are involved in the real-time coordination and control method. The central real-time optimal control layer collects the voltage and frequency of an AC bus of the photovoltaic micro-grid system, the charge state of a storage battery pack, the output power of photovoltaic power generation micro-sources, the output power of the storage battery pack, the output power of a super capacitor and the real-time power of a load in real time, generates a real-time coordination and control strategy and a secondary frequency modulation and scheduling plan, and issues the strategy and the plan to all local controllers. The local control layer coordinates and controls all the micro-sources in real time, and particularly achieves the scheduling plan issued by the central real-time optimal control layer. According to the real-time coordination and control method, a micro-grid central optimizing controller can manage, coordinate and control all the local controllers in a unified mode, the micro-grid can efficiently and economically run, the output power of the photovoltaic power generation unit is utilized to the maximum extent, the output power fluctuation and the tracking load change of the photovoltaic power generation unit are restrained, the running method of the micro-grid is reasonably adjusted, and energy balance is achieved.
Owner:EAST GRP CO LTD

Minimum equivalent fuel consumption-based hybrid electrical vehicle control method

The invention discloses a minimum equivalent fuel consumption-based hybrid electrical vehicle control method, which comprises the following steps of: acquiring a nominal equivalence factor offline; acquiring signals; identifying working conditions; performing adaptive regulation; and performing optimum control. Under the condition of meeting the requirement of dynamic property, the minimum equivalent fuel consumption-based hybrid electrical vehicle control method is adopted, adaptive regulation can be performed according to an actual working condition, and the electric quantity balance of a storage battery is ensured, so that the performance and service life of the storage battery are ensured. The nominal equivalence factor is acquired through simulation calculation in the offline state, and calculated quantity for real-time control of the whole vehicle is reduced. In addition, different from a global optimal control method in which a future vehicle running working condition is required to be known (the future vehicle running working condition is unpredictable actually), the method has high implementability; and by the method, the real-time optimal energy management decision can be provided, the fuel economy of the whole vehicle is further improved, and the emission is reduced.
Owner:DALIAN UNIV OF TECH

Drug and medical device safety and support information reporting system, processing device and method

A reporting system, including a processing device, and method provides drug and medical device safety and support information during a workflow of a healthcare provider. The system and method electronically acquires, maps, generates, compiles, verifies and transfers in real time critical information regarding particular drugs and medical devices required by healthcare providers, such as a prescriber, at the optimum time in which the healthcare provider needs the information. In an embodiment, the drug and medical device safety information is accessed from an associated healthcare website, such as an Electronic Health Record (EHR) web site, during a prescription stage in the healthcare providers workflow for a particular patient. The system and method also includes an adverse reporting system that allows for the drug and medical device safety information to be updated and accurately reported in an efficient and up to date manner. In an embodiment, a healthcare provider reports an adverse event or reaction to a drug by a patient during a workflow at a EHR web site. The adverse event information is forwarded to the Federal Drug Administration (FDA) and the particular drug manufacturer which may update the corresponding drug information. The updated drug information may then be reported by the system to insure that healthcare providers receive the most current, accurate and complete safety information during a workflow. In embodiments, the updated drug and medical information may be provided to malpractice insurance carriers to further ensure safety.
Owner:PDR NETWORK

Method and device for planning robot time optimal trajectory based on dynamic model

InactiveCN110209048AOptimize motion parametersRealize high-speed movementAdaptive controlDynamic modelsMotion parameter
The invention discloses a method and a device for planning a robot time optimal trajectory based on a dynamic model. The method for planning the robot time optimal trajectory comprises the following steps: converting joint motion constraint and geometric path constraint to a parameter space through a robot motion trajectory predetermined by dynamics modeling and parameterization; taking shortest time as an objective structural optimization problem, and solving through a numerical integration method to obtain an optimal motion parameter of the robot; and carrying out spline curve smoothing on acceleration for three times on a phase plane by considering the problem of joint vibration caused by sudden change of the acceleration. Compared with the conventional trapezoid acceleration trajectoryplanning method, the motion parameter of the robot can be optimized under the joint motion constraint and the geometric path constraint; the high-speed motion of the robot can be achieved; the performance of a joint motor is fully used; the motion speed of the robot can be further improved; pitch time for executing tasks is reduced, so that the operation efficiency of the robot is improved; and the method and the device have great significance to improvement of overall performance of the robot.
Owner:SOUTH CHINA UNIV OF TECH +1

Variable-speed wind generating set maximum wind energy capturing method based on effective wind speed estimation

The invention discloses a variable-speed wind generating set maximum wind energy capturing method based on effective wind speed estimation. The method comprises an effective wind speed estimating model and a maximum wind energy capturing controller. In order to acquire an effective wind speed estimated value, a training set of an SVR model is formed by normalized unit historical output data and historical wind speed measured values, penalty parameters and kernel function parameters are selected by a GA algorithm to obtain the trained SVR model, and the model gives out the wind speed estimatedvalue in an online manner; and when the maximum wind energy capturing controller is design, the real-time optimal wind wheel rotating speed estimated value is obtained according to effective wind speed which is given out by the effective wind speed estimating model, nonlinear characteristics and parameter uncertainty of the system are responded by robust factors and a neural network, and therefore, boundedness of rotating speed tracking errors and stability of a wind generating set system are realized. By the method, a mathematical model and parameters of the unit do not require to be used, adesign process is simple, an implementing cost is low, and the capacity of the unit and the economic benefit of a wind power plant can be improved.
Owner:ZHEJIANG UNIV

Real-time optimal configuration method for lane resources of multi-lane expressway

The invention discloses a real-time optimal configuration method for lane resources of a multi-lane expressway. The real-time optimal configuration method for the lane resources of the multi-lane expressway comprises the following steps of traffic data acquisition, equivalent traffic volume confirmation, saturability calculation, passenger car and freight truck separation confirmation, lane resource configuration, lane speed limitation confirmation and real-time information issuing. Flow data of different vehicles running on the expressway are acquired and analyzed in real time, whether passenger cars and freight trucks on the expressway need to be separated from each other or not is determined, lane speed limitation measures under the condition of passenger car and freight truck separation and lane speed limitation measures under the condition of passenger car and freight truck combination are confirmed, and a real-time lane resource configuration scheme is formed. The lane resources of the expressway are distributed and controlled in real time, safety problems caused by mixed flow of the passenger cars and the freight trucks are reduced, speed advantages of the different vehicles can be played to a maximum extent, and the traffic efficiency of the expressway is improved.
Owner:LIAONING PROVINCIAL TRANSPORTATION PLANNING & DESIGN INST +2

Real-time information-based metro passenger service system

The invention relates to a real-time information-based metro passenger service system. Mobile terminal equipment automatically connects wireless sensors in a metro station and in metro compartments so as to perform data interaction with the servers to acquire relevant information in the metro station in real time, and the relevant information is used for passengers to view in real time; moreover, a heuristic search strategy based on the estimated arrival time of a metro, running time between stations, the current passenger flow information of the metro station and passenger flow information in each metro compartment is proposed, and therefore the optimal proposed ride scheme is obtained, and meanwhile, a time-optimal and distance-optimal scheme is obtained for the passengers to select; after the scheme is determined, according to the position conditions of the current passengers, a prompt of the next route is provided in real time; the passenger flow conditions of the compartments are determined according to the information of the wireless servers of the metro which is about to arrive, and the best waiting position proposal can be given by the system; after the passenger ride, prompt contents, including the time that the metro is about to arrive the next station, the get-off station and the get-off time of the passengers are given in real time, the exit scheme of the metro station and corresponding map information, can be given in real time.
Owner:大连海天兴业科技有限公司

Time optimal grab bucket operation method

The embodiment of invention discloses a time optimal grab bucket operation method. According to the method, an operation path of a grab bucket is a parabola compounded by hosting motion and trolley motion; the hoisting motion operates according to a trapezoidal velocity curve; both ascending motion and descending motion are accelerated to operate at full speed with the maximum acceleration and decelerated to stop with the maximum acceleration when a target location is reached, so that the grab bucket operates at high level at the earliest time and descends from the high level at the latest time; for the trolley motion, a two-step acceleration method is adopted at an acceleration stage, a two-step deceleration method is adopted at a deceleration stage, a two-step deceleration method or a bucket throwing deceleration method is adopted at the stage of approaching a hopper, and a two-step acceleration method or a bucket throwing acceleration method is adopted at the stage of leaving the hopper, wherein the hoisting motion is accelerated to the full speed, a trolley starts to move from a point B, and the grab bucket starts to move along the parabolic path; and when the grab bucket returns to a cabin of a ship, the grab bucket moves to the point H along the parabolic path, the trolley stops moving, and the hoisting starts to decelerate from the point H and stops at a point I.
Owner:上海港吉电气有限公司

Electric vehicle charging real-time optimization dispatching method

The invention discloses an electric vehicle charging real-time optimization dispatching method. The technical scheme adopted by the invention is as follows: Net-Electrified Transportation CooperativeSystem Architecture Based on Vehicle Interaction; A micro traffic assignment model based on travel chain tracking is established to track and simulate the real-time information of driving behavior, location distribution, state of charge and charging demand of electric vehicle users. Charging station selection and navigation strategy; A two-layer real-time optimal dispatching model is constructed to determine the specific charging scheme of electric vehicles in each charging station, which takes into account the safety of distribution system and the waiting time of users. YALMIP/CPLEX efficientcommercial solver is used to solve the upper and lower level problems iteratively. The invention can not only alleviate the traffic jam near the charging station; But also can make the load distribute evenly, reduce the network loss and ensure the safe and economical operation of the power network; Also can meet the EV charging demand, improve customer satisfaction, and ultimately achieve the overall optimization of electrified transportation system operation, taking into account the interests of many aspects.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER +1
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