3results about How to "Smooth shock" patented technology

This invention discloses a method for estimating the state of charge (SOC) against fluctuating current. It acquires the real-time current and terminal voltage of the power battery to estimate the basic SOC. Based on a dual hysteresis threshold, the sample time proportion of the real-time current sequence within the target time window, and a transient pulse filtering mechanism, it accurately identifies the actual switch between steady-state and dynamic operating conditions. Responding to the operating condition switch, a dynamic weight fusion strategy is adopted within a preset transition period to acquire in parallel the proportional-integral-derivative (PID) control algorithm correction amount with the terminal voltage residual as input, and the state observation filtering algorithm correction amount with the basic SOC as the state variable. The weights of the two correction amounts are linearly and smoothly varied over time and then weighted and fused to calculate the final target SOC to manage the charging and discharging process of the power battery. This invention effectively filters out transient current interference, eliminates the step jump in estimated values ​​caused by hard switching of the underlying algorithm, and balances the steady-state accuracy of the estimation with high dynamic tracking response.

The utility model relates to single out pole viscous damper field, concretely relates to a gasbag energy storage type single out pole viscous damper, including damper cylinder body, the main part for bearing single out pole viscous damping assembly, single out piston rod, set up in the inside of damper cylinder body, for bearing impact complete damping buffer, and single out piston rod's rear end fixed mounting has energy storage gasbag, the inside of damper cylinder body is provided with telescopic buffer spring. The utility model is provided with energy storage gasbag, telescopic buffer spring, gasbag inner support, inner partition, air pressure sensor, drive control module and inlet and outlet pipe, when using the gasbag energy storage type single out pole viscous damper, the air pressure sensor inside energy storage gasbag can real -time monitoring the internal air pressure of energy storage gasbag, and through wire connection, the air pressure data transmission drive control module, like this can be in time through the inlet and outlet pipe and the air inlet of air supplement when the internal air pressure of energy storage gasbag is insufficient and carries out air supplement.

This application relates to the field of motor control and electrical technology, and in particular to an intelligent control method and system for a high-speed brushless motor for vacuum cleaners. The method is applied to a high-speed brushless motor system, which includes a processor and a frequency-selective damping ring fitted onto the motor stator core. The inner wall or end face of the frequency-selective damping ring has multiple radial slots arranged at preset intervals. The method is executed by the processor and includes: acquiring a torque trend term characterizing the change trend of the motor load torque and an angular acceleration term characterizing the change trend of the motor rotor kinetic energy; calculating a real-time phase offset based on the torque trend term and the angular acceleration term; identifying the degree to which the real-time phase offset deviates from a preset dynamic threshold to determine whether the motor has entered a surge bud state; and outputting an overmodulation control signal when a surge bud state is detected to drive the motor stator windings to generate an excitation current containing high-frequency harmonic cluster components.