3 results about "Internal feedback" patented technology

This application relates to a real-time active sound synthesis method for electric vehicles based on vehicle dynamics parameters. The method involves real-time acquisition of motor speed, vehicle speed, throttle position, and torque; dynamic mapping and calculation of carrier frequency, modulation frequency, and modulation index; real-time generation of audio waveforms using a frequency modulation synthesis algorithm; and outputting external warning signals and internal feedback signals after spatial rendering. This method enables real-time changes in timbre based on driving operations, enhancing realism and safety, while reducing hardware costs.

This invention discloses a two-dimensional electrostatic scanning micromirror, comprising an outer frame, an inner frame, and a mirror surface. The outer frame is machined with an outer frame isolation groove, dividing it into an outer frame measurement section, an outer frame driving section, and two outer frame connecting sections. An external feedback comb group is located between the outer frame measurement section and the inner frame, and an external driving comb group is located between the outer frame driving section and the inner frame. The mirror surface is machined with a mirror surface isolation groove, dividing it into a mirror surface feedback section, a mirror surface driving section, and a central section. An internal feedback comb group and an internal driving comb group are machined between the mirror surface feedback section and the inner frame, respectively. By setting isolation grooves with different structures on the outer frame and the mirror surface, the outer frame and the mirror surface are separated into different functional parts. The inner and outer comb groups are respectively set as driving comb groups and feedback comb groups, enabling the measurement of the mirror surface deflection angle in two directions. Real-time feedback of the mirror surface deflection angle in different directions can be achieved, improving the accuracy of mirror surface deflection angle control.

This invention discloses a pilot-operated internal feedback proportional cone valve and a hydraulic system. The pilot-operated internal feedback proportional cone valve includes a pilot valve, a main valve, and a mechanical feedback device. The pilot valve has a first valve chamber and includes a first valve stem movably disposed on the pilot valve along its axial direction. The main valve has a second valve chamber and a third valve chamber connected together, with the first valve chamber and the third valve chamber connected. The main valve also includes a second valve stem and a third valve stem. The second valve stem is movably disposed on the main valve along its axial direction, with a portion of the second valve stem located within the second valve chamber. The third valve stem is movably disposed on the main valve along its axial direction, with a portion of the third valve stem located within the third valve chamber. The first valve stem, the second valve stem, and the third valve stem are all drively connected to the mechanical feedback device. The pilot-operated internal feedback proportional cone valve of this invention has the advantages of high control accuracy.