14results about How to "Improve dynamic response characteristics" patented technology

The invention relates to a DC-DC converter control method based on an intelligent agent reinforcement learning algorithm, and the method comprises the steps: firstly building an intelligent agent for a DC-DC buck converter which supplies power to a constant-power load, obtaining a state observation quantity formed by all preset environment variable values of the DC-DC buck converter through the intelligent agent, and obtaining the state observation quantity of the DC-DC buck converter; and a reward value corresponding to a difference value between the output voltage and a preset reference voltage is processed by the intelligent agent, and a corresponding action signal is output and used for controlling the DC-DC buck converter. And then through reinforcement learning training of the intelligent agent, the trained model controls the DC-DC buck converter, so that the output voltage of the DC-DC buck converter has good adaptivity and dynamic response characteristics under different working conditions, and the designed intelligent agent has good steady-state performance in application, so that the stability of the DC-DC buck converter is improved. Model parameter uncertainty caused by component aging can be dealt with, and the stability in practical application is ensured.

This invention relates to the field of flexible DC transmission technology for offshore wind power, and discloses a method and system for collaborative optimization of control parameters of converter stations and wind turbine converters in offshore wind power flexible DC systems. The method includes: constructing an electromagnetic transient simulation model comprising a sending-end converter station, a receiving-end converter station, a DC transmission line, and a wind farm; introducing multiple disturbance conditions and combining variations in control parameters, recording dynamic response process data; establishing a collaborative optimization criterion composed of multiple performance indicators directly mapped from the dynamic response process data; and employing a multi-objective evolutionary optimization mechanism with control parameters as the variables to be optimized and performance indicators as the optimization guide for iterative search. This invention achieves global collaborative configuration of control parameters for converter stations and wind turbine converters, solving the problem of traditional step-by-step tuning methods neglecting dynamic interaction effects, and significantly improving the overall operational robustness of offshore wind power flexible DC systems under multiple disturbance conditions.

This invention belongs to the field of motor technology and discloses a high-linearity finite-angle torque motor, comprising a cylindrical rotor and a cylindrical stator, with the rotor housed within the stator. The stator includes N coils and N constant magnetic circuit channels, where N is an even number of at least 2. The rotor's magnet portion has N polarities. The N coils of the stator are evenly arranged circumferentially on the inner side of the stator, with adjacent coils separated by constant magnetic circuit channels. The ends of all coil frames and the ends of the constant magnetic circuit channels together form the rotor's rotational track. Adjacent stator coils have opposite polarities after being energized, and adjacent rotor magnets also have opposite polarities. This invention employs a special stator lamination structure, theoretically eliminating stator cogging torque within the motor's operating angle range, thus improving the linearity of the motor's output torque. Compared to traditional slotted finite-angle torque motors, the output torque fluctuation is reduced by more than 70%.

The utility model provides a kind of machining center contact type mechanical tool changing structure, it is related to mechanical tool changing structure technical field, including stand mechanism, the front of the stand mechanism is equipped with main shaft box, the front of the stand mechanism is close to top end place, and punch arm mechanism is installed in the inside of main shaft box, the stand mechanism includes stand main body, the top end of the stand main body is equipped with motor with output end towards bottom, the front of the stand main body is close to top end place and is equipped with punch block, the inside of main shaft box is close to the front place and is equipped with main shaft body, the top end of the main shaft box is close to left side place and is screw-connected with first fastening screw, the periphery of the first fastening screw is equipped with tension spring, the top end of the main shaft box is close to the front place and is screw-connected with second fastening screw, mechanical quick tool changing can be realized, additional transmission device is not needed, with the advantages, such as quick tool changing efficiency, small size, cost saving.

This invention provides a model predictive controller for eliminating backlash in a heliostat multi-servo drive system, specifically for heliostat multi-servo drive systems. For speed control, an improved dead-zone model is proposed to model the backlash, and a dynamic model of the dual-motor system is established based on this model. A model predictive speed controller and control system based on the dead-zone model are designed according to the dynamic model, and a feedback correction loop is used to correct the prediction results. For position control, an improved backlash elimination strategy using a variable offset torque distribution method is proposed, and a dual-motor system model based on the backlash elimination strategy is established. A model predictive position controller and control system based on the backlash elimination strategy are designed based on this model. The controller of this invention can eliminate the influence of backlash in the heliostat multi-servo system, achieving fast and stable speed regulation without overshoot and fast response and high positioning accuracy in position control.

The invention relates to a conducting strip pressing force control method suitable for an automobile connector and a related device, and the method comprises the steps: obtaining motor current data and motor position data, generating a first force estimation value and a second force estimation value through a first calculation path and a second calculation path, calculating the instantaneous deviation of the first force estimation value and the second force estimation value in real time, and transmitting the instantaneous deviation into a fast feedback loop and a slow feedback loop; the fast feedback loop generates a short-term correction value to dynamically compensate the first force estimation value; the slow feedback loop accumulates the instantaneous deviation to generate a long-term drift distance, and when the long-term drift distance meets a preset aging judgment condition, self-adaptive updating of a reference force-displacement model or a first calculation path is triggered; and outputting the dynamically compensated first force estimation value as a final pressing force control instruction. According to the invention, while high-resolution dynamic response is realized, short-term drift can be corrected through a stable reference, and the reference has self-adaptive capability so as to compensate long-term drift caused by equipment aging.

The utility model discloses a high -strength power station boiler steel structure engineering installation framework, including power station boiler, support crossbeam I, support stand I, connecting structure, reinforcing structure, support base, operation platform, support crossbeam I is fixedly connected with support stand I, and the overlapping portion of support crossbeam I and support stand I is equipped with connecting structure, and the outer side of connecting structure is equipped with support stand II, and the overlapping portion of connecting structure and support stand II is equipped with triangle reinforcing rib II, and power station boiler sets up in the steel structure frame of the overlapping of support crossbeam I and support stand I, and one side of triangle reinforcing rib I is fixed on support crossbeam I through fastening bolt I, and the other side is fixed on the outer wall of power station boiler, and reinforcing structure is equipped with multiple groups and sets up between two groups of adjacent support crossbeam I, and support base is fixed in the lower part of power station boiler, and operation platform is laid on support crossbeam II, and the stair is equipped between operation platform, and the outside fixed of operation platform has platform support column.

The application provides a MEMS capacitive pressure sensor and a preparation and use method thereof, and relates to the technical field of sensors.The structure of the MEMS capacitive pressure sensor provided by the application mainly comprises a force-sensitive nanofilm, a temperature-sensitive nanofilm, a substrate and a base plate, the substrate and the base plate are separated into two independent sealed cavities, and the surface of the base plate opposite to the force-sensitive nanofilm is etched with a ladder-shaped structure.The application optimizes the capacitive-pressure response characteristics (when the external pressure acts, the force-sensitive nanofilm is deformed, and the linear coupling is generated by the change of the effective overlapping area and the interval between the force-sensitive nanofilm and the ladder-shaped structure), and combines with the in-situ temperature compensation of graphene, so that the MEMS capacitive pressure sensor provided by the application can realize high linearity of pressure measurement in a wide temperature range, and the technical problems of traditional devices, such as serious temperature crosstalk and narrow linear interval, are solved, thereby providing a new solution for high-precision and high-reliability pressure measurement.

The utility model discloses a power system and equipment of a two-wheel self-balancing electric vehicle and a storage medium, the system comprises an inertial measurement unit which is arranged at a pedal plate and is used for measuring the inclination angle of a vehicle body and transmitting the inclination angle to a main control unit; the angle and torque unit is installed at the position of a headstock pipe and used for detecting the turning handle angle and torque data of the vehicle and transmitting the data to the main control unit; the remote control unit is used for sending a command to the main control unit; the rotating handle unit is arranged behind the bicycle head pipe and above the main beam pipe and is used for receiving a command of the main control unit and directly driving the front fork to deflect leftwards and rightwards; the driving unit is used for driving the vehicle to advance; the auxiliary wheel unit is used for receiving signals of the main control unit and controlling auxiliary wheels to ascend and descend. A technical complementation mechanism is formed in the mode that the gravity center of the handlebar is lowered and the auxiliary wheel system is cooperatively matched, autonomous balance running is achieved by adopting rear wheel driving and depending on control over the direction of the handlebar, and running safety and stability are guaranteed.

The invention relates to the technical field of electronic measurement, in particular to a high-voltage side current detection circuit and system based on potential translation, which can translate high common-mode voltage borne by two ends of a sampling resistor to a safe low common-mode voltage domain without distortion by using a current mirror. A subsequent signal extraction and amplification module does not need to directly bear a high common-mode voltage, so that the withstand voltage limitation of a traditional special detection chip is broken through, hundreds of volts or even higher common-mode voltage endurance capability can be realized only by selecting an external resistor with a proper withstand voltage level, and the adoption of a special current detection and amplification chip with high manufacturing cost is avoided; and the circuit cost is obviously reduced. Besides, the influence of transistor parameter drift in a current mirror of the potential translation module appears in a common mode form in a differential signal path, and can be effectively suppressed by a subsequent signal extraction amplification module with a high common mode rejection ratio, so that the overall detection precision and temperature stability of the system are guaranteed while high withstand voltage is realized.

This invention discloses an unwinding mechanism for high-speed cutting of lithium battery electrodes, comprising a frame and a servo unwinding module, a two-stage closed-loop correction module, a tension control and buffering module, an automatic tape splicing and tab imprinting module, and a vision and control module mounted on the frame along the electrode's forward direction. This unwinding mechanism uses the frame as its mounting base, highly integrating functions such as servo unwinding, two-stage closed-loop correction, tension control and buffering, automatic tape splicing and tab imprinting, vision assistance, and centralized control onto the frame. The structure is compact and rationally laid out, eliminating the need for additional independent equipment, thus improving the overall processing efficiency of the production line and reducing equipment investment and maintenance costs. Simultaneously, the vision and control module enables centralized control of the entire process, with each module working collaboratively to ensure the stability, accuracy, and continuity of the electrode during high-speed transmission, adapting to the production requirements of high-speed cutting of lithium battery electrodes.

The application discloses a kind of quick closed-loop control methods of nuclear magnetic resonance gyro excitation magnetic field, using a set of wave trap filter in cascade to filter mixed signal frequency division, obtain with 129 Xe and 131 Larmor precession frequency of Xe Single-phase sinusoidal signal of base frequency, through SOGI second-order generalized integrator to generate orthogonal signal, through Park transformation to obtain phase error, finally through the loop filter in PLL and voltage controller feedback excitation magnetic field signal, complete closed-loop control.The quick closed-loop control method of nuclear magnetic resonance gyro excitation magnetic field proposed in the application has high-precision frequency separation ability and fast phase tracking ability, and has the effect of improving the stability of the overall system.

This application discloses a die bonding method, equipment, and process product, relating to the field of semiconductor processing technology. The die bonding method includes transporting a conveyor belt to transport any row of initial labels on the belt to a dispensing station; the conveyor belt array has multiple rows and columns of initial labels; a dispensing module is moved to the dispensing station along a first direction, and the dispensing module is used to position, identify, and dispense each row of initial labels, and to perform dispensing quality inspection; the first direction is parallel to the arrangement direction of each row of initial labels; the conveyor belt is stepped with a preset row spacing to transport the next row of initial labels to the dispensing station, and dispensing is performed on multiple rows and columns of initial labels sequentially; the dispensed labels on the conveyor belt are sequentially subjected to chip bonding, pressing, and curing to obtain finished chip labels. This application replaces the movement of a large inertia platform with a lightweight movement method of the dispensing module, achieving a balance between cost and control accuracy.

This application provides a method and system for regulating the electrode current of a calcium carbide furnace, relating to the technical field of electrode current regulation in calcium carbide furnaces. The method includes: collecting and estimating unmeasurable state parameters of the electrode system online using an extended Kalman filter algorithm based on three-phase current data and the lifting / lowering speed data of the three-phase electrodes; obtaining a three-phase current setpoint; and, based on the deviation between the three-phase current setpoint and the collected three-phase current data, the online identified three-phase coupling coefficient matrix, and the unmeasurable state parameters, performing rolling optimization in the prediction time domain using coupled model predictive control, considering three-phase coupling constraints and system time lag, generating a predictive control quantity for the lifting / lowering speed of the three-phase electrodes; and outputting the predictive control quantity for the lifting / lowering speed of the three-phase electrodes to the electrode lifting / lowering actuator to adjust the electrode position. By employing the above method, the technical effect of improving the accuracy of three-phase current control is achieved.