34 results about "Real time kinetics" patented technology

A system and method for providing power and alignment control within an irrigation system having at least two spans and a drive system for moving the spans. According to a first preferred embodiment, the present invention includes a method for maintaining the alignment which includes the steps of: receiving a first set of Global Positing System (GPS) location data and second set of Real-Time Kinematics (RTK) error data; comparing the first set of GPS location data with the second set of RTK error data; calculating RTK error correction data; transmitting RTK error correction data to the intermediate drive towers and the last drive tower; calculating the location of the last drive tower using GPS data and RTK error correction data; calculating a straight, center line between the center pivot and the last drive unit; calculating the relative distances between each intermediate drive tower and the calculated center line using a linear regression algorithm; and controlling the average speed over time of each intermediate drive tower to reduce distance between their current locations the calculated center line The present invention provides a system for aligning drive towers within an irrigation system.

The present invention provides a method for aligning spans using real-time kinetics (RTK) data communicated through a power line carrier system. According to a further preferred embodiment, the method of present invention includes the steps of: receiving a first set of GPS location data and second set of RTK data; comparing the first set of GPS location data with the second set of RTK data; calculating RTK error correction data; creating an RTK error correction data signal containing RTK error correction data; modulating the RTK error correction data signal for transmission on a power line carrier; transmitting the RTK error correction data signal through a power line BUS onto a power line to a last drive tower; de-modulating the RTK error correction data signal; calculating the location of the last drive tower using the RTK error correction data; calculating a straight, center line between the pivot and the last drive unit; calculating the relative distances between each intermediate drive tower and the calculated center line; and controlling the speed or average run time of each intermediate drive tower to reduce distance between their current locations and the calculated center line.

The invention provides a distributed simulation platform based on hardware-in-the-loop and a simulation method. The distributed simulation platform based on hardware-in-the-loop provided by the invention comprises a real-time dynamics platform, a real-time control algorithm platform and a control acceleration platform. When the simulation platform is switched from real-time simulation to super real-time simulation, the control acceleration platform sends an acceleration multiple signal to the real-time dynamics platform and the real-time control algorithm platform; and when the simulation platform is switched from super real-time simulation to real-time simulation, the acceleration multiple signal is 1 or no acceleration multiple signal is sent.

The invention relates to a modeling method of a large-flexibility flight vehicle based on online identification. The modeling method comprises the four steps of building of a unit mechanism model, parameterization of the unit model, building of an overall flight dynamic model and online identification. According to the fact that when the large-flexibility vehicle is on flight, wings can be subjected to geometric nonlinearity deformation, and a structural model of flexible wings is built based on a nonlinear beam theory; a continuous vibration system is discretized to obtain a unit structure model; aiming at the feature that aerodynamic force is unsteady, an unsteady aerodynamic theory is utilized to build an aerodynamic force model; the aerodynamic force model and external forces like gravity are substituted into the structural model to obtain a unit gas bomb mechanism model; according to needs, variables capable of being measured by proper sensors are selected as parameters, and parameteriztion of the unit model is conducted; moreover, the parameters are utilized to achieve connection among units; a many-body dynamic theory is utilized to build the overall dynamic model of the flight vehicle; finally, a proper sensor is selected to achieve parameter online identification to obtain the large-flexibility flight vehicle real-time dynamic model.

The invention provides a selective catalytic reduction (SCR) denitration system optimizing control method and a system thereof. The SCR denitration system optimizing control method comprises the steps of obtaining reflecting parameters of NO of an SCR denitration system under a preset temperature by measurement respectively when the nitrogen-ammonia ratio is larger than 1 and smaller than 1; calculating apparent reaction rate constant KNO of NO under various obtained temperatures, activation energy of adsorption rate constants of NH3 under various temperatures and pre-exponential factors according to the obtained reflecting parameters, establishing a control model of an infinitesimal volume of a reactor of the SCR denitration system, and performing power optimizing control on the SCR denitration system. Accordingly, Optimizing control can be performed on the SCR denitration system on the basis of SCR denitration system real-time kinetic parameters, and control efficiency and rationality on the SCR denitration system can be improved.