10results about How to "Optimal control method" patented technology

The invention discloses a real-time prediction and control method and system for the deformation state of a superplastic forming part based on digital twinning, and belongs to the technical field of intelligent manufacturing. The method aims at solving the technical problems that in the superplastic forming process, the deformation state of a part is invisible, control depends on experience, and quality is unstable due to open-loop control. The core lies in that a multi-task learning artificial intelligence prediction model taking air inflow time sequence data as input and taking pressure in a mold cavity and a part full-field deformation state as output is constructed by fusing parameterized finite element simulation and physical experiment data in an offline stage; in the online stage, the model is utilized to dynamically predict deformation states such as a strain field and a thickness field in the part according to air inflow data collected in real time, and process transparency is achieved; and a model prediction control algorithm is further combined, a prediction state is compared with an ideal path, the air inlet pressure is reversely optimized and adjusted in real time, and a closed-loop intelligent control system is formed. According to the method, perspective and active accurate control of the internal state in the black box forming process are achieved, and the quality consistency and the yield of parts can be improved.

The application discloses a parallel RCM mechanism end effector for orthopedic surgery, which comprises two motors, three movement units, a double parallelogram linkage mechanism and a ball mill. The two motor axes are perpendicular and are installed on a base. The motor A is hingedly connected to the bottom end of the first movement unit; the motor B is hingedly connected to the bottom end of the second movement unit; the third movement unit is symmetrically arranged with the second movement unit and is hingedly connected to the base at the bottom end. The upper rod end of the double parallelogram linkage mechanism is hingedly connected to the top end of the second and third movement units through a rotating shaft; the lower rod end is hingedly connected to the three movement units through a rotating shaft. The upper rod and the lower rod are rotationally connected to the ball mill at the front ends. The double parallelogram linkage mechanism is used to make the center of the ball mill head coincide with the fixed point of the RCM mechanism, and the mechanism characteristic of the fixed point of the RCM mechanism is utilized. The fixed point is made to coincide with the ball center of the ball mill head, so that the position of the ball mill head is unchanged when the posture of the ball mill is changed, the posture of the ball mill does not affect the grinding process in the grinding process, the posture of the ball mill can be adjusted, the obstacle avoidance can be better realized, and the safety is improved.

This utility model provides a cleaning device for car door handles and a vehicle, relating to the field of vehicle cleaning technology. The cleaning device for car door handles includes: at least one nozzle structure, at least one delivery channel, and a medium pressurizing structure. The medium pressurizing structure pressurizes the cleaning medium and inputs the pressurized cleaning medium into the delivery channel. The first end of the gradually expanding cavity of the nozzle structure is connected to the delivery channel, which inputs the cleaning medium into the gradually expanding cavity through the first end. The second end of the gradually expanding cavity is the outlet end of the cleaning medium, and the diameter of the first end of the gradually expanding cavity is smaller than the diameter of the second end. The extension line of the direction in which the cleaning medium is ejected from the outlet end is parallel or nearly parallel to the outer surface of the car door handle. The cleaning medium ejected through the outlet end is a planar fluid that cleans the outer surface of the car door handle. This solution improves the cleaning efficiency of the outer surface of the car door handle, and the control and cleaning methods are simple and easy to operate.

The utility model provides a kind of decontamination device and vehicle of vehicle quarter window, it is related to vehicle decontamination technical field, and the decontamination device of vehicle quarter window includes: at least one nozzle structure and at least one delivery channel;Nozzle structure includes gradually expanding cavity, the first end of gradually expanding cavity is communicated with delivery channel, delivery channel is used to input cleaning medium into gradually expanding cavity by the first end of gradually expanding cavity, the second end of gradually expanding cavity is the ejection end of cleaning medium, the caliber of first end is less than the caliber of second end;Ejection end is set to the edge of vehicle quarter window;The extension line of the direction that ejection end sprays cleaning medium is parallel or close to parallel with the surface of vehicle quarter window, and surface cleaning medium is sprayed via ejection end, to carry out decontamination to the outer surface of vehicle quarter window.The control mode and decontamination mode of the utility model are simple, easy to operate, and can improve the decontamination efficiency of the outer surface of vehicle quarter window.

The invention provides a coronary stent shaping device which is of a hollow tubular structure, a U-shaped or nearly U-shaped notch is formed in one end of a tube, the inner diameter of the hollow tubular structure is equal to 1.05-1.25 times of the outer diameter of an unexpanded coronary stent, the length of the hollow tubular structure is larger than that of the unexpanded coronary stent, and the length of the hollow tubular structure is larger than that of the unexpanded coronary stent. The width of the notch is smaller than or equal to the outer diameter of the unexpanded stent and larger than or equal to the width of the single mesh. According to the stent shaping device, the risks of stent deformation and damage can be remarkably reduced, the risk of stent deloading is reduced, and the success rate of stent implantation operation is increased.

The invention relates to the technical field of atomizers, in particular to a micro-grid atomizer device and a control method. The micro-grid atomizer device comprises an atomizing unit, the atomizing unit comprises a micro-grid atomizing piece and a driving unit electrically connected with the micro-grid atomizing piece, and the driving unit is used for driving the micro-grid atomizing piece to vibrate; the gas path detection unit is mounted on the gas path channel side of the micro-grid atomizer device and is used for detecting gas flow and outputting a detection signal; the controller comprises a control unit and a storage unit connected with the control unit, and the control unit is electrically connected with the driving unit and the gas path detection unit; the control unit collects a detection signal transmitted by the gas path detection unit and outputs a control signal to the driving unit according to the detection signal; furthermore, the technical defect that an existing atomizer cannot control atomization parameters is overcome.

The present application belongs to the technical field of safety control of stamping equipment, and particularly relates to a stamping line grating safety reset method, system and equipment based on sequential button confirmation, which detects automatic die changing conditions first; after the conditions are met, an operator presses a first reset button to activate all gratings and start flashing and timing; after pressing the last intermediate confirmation button, the exit grating will enter a controlled short disabled state, and the operator needs to leave during this period and press the exit reset button to reactivate the grating; then the subsequent confirmation button operation is continued until the final reset button is pressed on the master console to complete the one-sided reset. The method ensures that the operator completes safety inspection of each area along the predetermined route during the reset process through sequential operation, definition of time points and path constraints, effectively preventing skipping, missing or staying. The method improves the intrinsic safety of the reset operation of the stamping line under the working conditions such as automatic die changing.

The utility model provides a rotatable automobile sheet metal maintenance platform belongs to automobile sheet metal technical field, including rotating component, including base, fixedly connected in the base center's bottom pivot, the platform pivot of rotation connection in the bottom pivot top, fixedly connected in the platform pivot lateral wall's platform and fixedly connected in the platform top's support column. The utility model discloses through the setting of clamping pivot, vertical rod and clamping block, need not frequently change fixture, can adapt to multiple vehicle type maintenance demand, greatly reduce the time and cost of model change adjustment, utilize clamping pivot, bottom pivot and platform pivot to solve the problem of fixed clamping angle when large -area repair, can flexible adjustment clamping angle, easily cope with complex deformation part's repair, improved the defect that traditional maintenance platform cannot move, can be moved to the suitable operation position flexibly, avoid the repair process frequently carries the work piece, improved overall work efficiency.

This invention provides a control device for an internal combustion engine, a control method for an internal combustion engine, a computer program product, and a storage medium. When the intake air volume is calculated based on a flow rate signal, the control device (36) of the internal combustion engine (10) performs catalyst protection control to limit the intake air volume based on the exhaust temperature and a first predetermined temperature to protect the catalyst. When the intake air volume is calculated based on a pressure signal, the control device (36) of the internal combustion engine (10) performs catalyst protection control based on the exhaust temperature and a second predetermined temperature different from the first predetermined temperature. Accordingly, the timing of initiating catalyst protection control when the intake air volume is calculated based on a flow rate signal is different from the timing of initiating catalyst protection when the intake air volume is calculated based on a pressure signal.

The invention provides an anion exchange membrane water electrolysis hydrogen production control method and system based on data-driven model predictive control, and the method comprises the steps: collecting operation data, and constructing a system non-mechanism model through a BP neural network algorithm; predicting output parameters of the AEM water electrolysis hydrogen production system according to the system non-mechanism model; inputting the output reference value y (t) into a system non-mechanism model and a controller; the x (t) is optimized through an optimization model constructed through an NSGA-II algorithm; the delta x (t) is applied to an AEM water electrolysis hydrogen production system, and actual output and predicted output are obtained; comparing to obtain an error value, and performing feedback correction on the controller; and updating the system non-mechanism model and the prediction model. According to the method, the non-mechanism model and the prediction model of the system are dynamically updated, the dynamic change of the AEM water electrolysis hydrogen production system can be reflected in real time, the control model is dynamically updated, and the precision of the control model is effectively improved.