7results about How to "Reduce control error" patented technology

The application provides a kiln ventilation regulation device, comprising: a ventilation pipe; a protection shell is fixedly installed on the surface of the ventilation pipe, a connecting shell is fixedly installed on one side of the protection shell, a supporting plate is fixedly installed in the inner cavity of the ventilation pipe, a supporting rod is fixedly installed on the top of the supporting plate, and a supporting disc is fixedly installed on the top of the supporting rod. Through the design of the regulation assembly, the regulation assembly adopts a worm, a worm wheel, a rotating gear and an adjusting disc transmission structure, worm and worm wheel transmission improves stability, the rotating gear and the teeth can realize precise adjustment of the angle of the adjusting fan blade, the ventilation volume control error is reduced, the precision is improved compared with traditional manual adjustment, multiple adjusting fan blades are linked through adjusting rods and adjusting discs, the ventilation pipe inner cavity ventilation cross-sectional area can be changed synchronously, the airflow deflection problem of traditional single baffle adjustment is avoided, the kiln working condition rapid change demand is adapted, a sealing strip is arranged on the top of the adjusting fan blade, and heat loss caused by traditional baffle gap air leakage is avoided.

Embodiments of the present application are applicable to the field of industrial control technology, and provide a temperature control method of a cooling circulating water system and the cooling circulating water system. The cooling circulating water system comprises a cooling device and a process equipment to be cooled connected to the cooling device through a circulating water pipeline, a reference temperature monitoring unit is installed on the circulating water pipeline, and the method comprises the following steps: determining a device outlet water temperature of a process equipment outlet; receiving a reference temperature collected by the reference temperature monitoring unit; correcting the device outlet water temperature based on the reference temperature to obtain a corrected outlet water temperature; and determining a control parameter of the cooling device according to the corrected outlet water temperature and controlling the cooling device according to the control parameter, so that an actual outlet water temperature of the process equipment is within a predetermined temperature range. By using the above method, the temperature of the cooling circulating water system can be finely adjusted.

This disclosure provides a robot control method, apparatus, device, and computer-readable storage medium. The method estimates the Jacobian matrix of robot motion based on real-time acquired robot motion data and establishes an optimization problem for a specific task based on physical constraints on the joint angular velocities and accelerations of each joint of the robot. This determines the control information for the robot's joint angular velocities, thereby achieving precise control of the robot's motion. This method enables fast and accurate robot motion control based on data-driven approaches even when the robot model structure is unknown or inaccurate, reducing computational costs and control errors caused by inaccurate structural information, and effectively reducing joint angular deviations during task execution. Furthermore, by limiting the robot's joint angular acceleration, it solves the problem of discontinuous speed or even motor damage caused by excessively large joint angular acceleration.

The application provides a virtual impedance design method and system considering high-precision power output of an inverter, and is suitable for a capacitive coupling inverter. The application firstly selects an equivalent coupling impedance boundary according to a physical impedance calculated active power output limit value; secondly, an inner boundary and an outer boundary meeting instantaneous response requirements are added to reduce the selection range of the virtual impedance; further, a stability margin parameter is introduced to derive a stability boundary of the coupling impedance, further reducing the selection range of the virtual impedance; then, considering possible power loss, a range in which the equivalent impedance approaches zero is taken as a feasible range of the equivalent coupling impedance; finally, a virtual impedance value is obtained by using the difference between the physical impedance and the equivalent coupling impedance. The application can reduce control errors in droop control and reduce capacity waste of CCI.

This invention discloses an open-circuit fault-tolerant control method for a six-phase motor suitable for low carrier ratio conditions, belonging to the field of motor fault-tolerant control. The invention addresses the problem of degraded control performance and poor stability of existing single-phase open-circuit fault-tolerant control methods for six-phase motors under low carrier ratio conditions. The invention includes: constructing a fault-tolerant coordinate transformation matrix to transform the mutually inductively coupled mathematical model in the natural coordinate system into a mathematical model without mutual inductive coupling in the synchronous rotating coordinate system, obtaining mutually decoupled and linearly independent space and space voltage equations; transforming the fault-tolerant phase current into current components in two spaces through forward coordinate transformation; setting discrete second-order rotating decoupling controllers in both spaces to generate voltage control quantities; and obtaining the phase voltage to drive the motor through inverse coordinate transformation. This invention configures the fault-tolerant current loop as a discrete second-order system, where the closed-loop pole distribution does not change with decreasing carrier ratio, thus ensuring good stability of the fault-tolerant control under low carrier ratio conditions.