Abstract: A mobile terminal, includes a housing, and a middle frame and a display that are disposed in the housing. The display is coupled to the middle frame. An accommodation space is formed between the display and the middle frame. In addition, the mobile terminal further includes a first magnet and a second magnet, and a part of the first magnet and a part of the second magnet are disposed in the accommodation space. The first magnet is disposed on a back facet of the display, the second magnet is disposed on the middle frame, and the first magnet and the second magnet are disposed face to face.

Abstract: A knob device for vehicle includes a knob unit and a locking unit. The knob unit includes a rotating cover, a rotary shaft and a motor configured to drive the rotating cover to vibrate. The locking unit includes a rotary wheel which includes a main body fixed to the rotary shaft and locking notches formed at a periphery of the main body. The locking notches are sunk from the periphery of the main body toward a center of the main body in radial directions of the main body. The locking unit further includes a locking pole configured to be inserted into one of the locking notches to block rotation of the rotary wheel, and an actuator configured to drive the locking pole to move. The knob device applies a locking unit which is capable of locking the rotary wheel, thereby realizing diverse use requirements.

Abstract: A method and an apparatus for displaying information of a motor are provided. The method includes: acquiring a target category identifier of a target motor; determining a category parameter interface according to the target category identifier, and displaying the category parameter interface, wherein the category parameter interface displays a category parameter tag that prompts a user to enter parameter information corresponding to the category parameter tag; acquiring target parameter information entered by the user via the category parameter interface; and obtaining target display information corresponding to the target category identifier according to the target parameter information, and displaying the target display information.

Abstract: The disclosure discloses a signal equalization method including: step S10: calculating an motor excitation signal according to an expected target acceleration signal; step S20: obtaining the output voltage according to the motor excitation signal, and setting the maximum output voltage of the signal power amplifier as voltage threshold; step S30: judging whether the output voltage is less than the voltage threshold. The technical proposal of the disclosure obtains a motor excitation signal and an output voltage by calculating an expected target acceleration signal, then compares the output voltage with the maximum output voltage of a signal power amplifier, improving the security of output voltage; according to the voltage peak area reduction method, the output voltage and the maximum operating displacement threshold of the motor are calculated to obtain a more safe output voltage.

Abstract: A knob device for vehicle includes a knob unit and a locking unit. The knob unit includes a rotating cover with an open end, a rotary shaft mounted to the open end, and a motor fixed to the rotating cover for driving the rotating cover to vibrate. The locking unit includes a rotary wheel which includes a main body fixed to the rotary shaft and latching teeth formed at a periphery of the main body and distributed in a ring around a central axis of the rotary wheel, a gap being defined between two neighboring teeth, an iron core configured to be inserted into the gap to limit rotation of the rotary wheel, and a solenoid connected to the iron core for driving the iron core to move. The knob device can realize locking of the rotary wheel clockwise and counter-clockwise, meeting requirement of diverse use.

Abstract: The disclosure discloses a signal equalization method including: step S10: calculating an motor excitation signal according to an expected target acceleration signal; step S20: obtaining the output voltage according to the motor excitation signal, and setting the maximum output voltage of the signal power amplifier as voltage threshold; step S30: judging whether the output voltage is less than the voltage threshold. The technical proposal of the disclosure obtains a motor excitation signal and an output voltage by calculating an expected target acceleration signal, then compares the output voltage with the maximum output voltage of a signal power amplifier, improving the security of output voltage; according to the voltage peak area reduction method, the output voltage and the maximum operating displacement threshold of the motor are calculated to obtain a more safe output voltage.

Abstract: The present disclosure provides a knob device for vehicle which includes a knob unit and a locking unit. The knob unit includes a rotating cover, a rotary shaft and a motor configured to drive the rotating cover to vibrate. The locking unit includes a rotary wheel which includes a main body fixed to the rotary shaft and locking teeth formed at a periphery of the main body. The locking tooth includes a first end, a second end and a surface connecting the first end and the second end. A distance between the first end and the central axis of the rotary wheel is greater than a distance between the second end and the central axis. The locking unit further includes a locking pole configured to abut the first end to limit rotation of the rotary wheel clockwise, and an actuator configured to drive the locking pole to move.

Abstract: A method and a system for measuring a total sound pressure level of noise, and a computer readable storage medium are provided. The method includes: obtaining a time domain digital signal of a sound pressure signal of the noise; obtaining a frequency domain signal of the sound pressure signal according to the time domain digital signal of the sound pressure signal; obtaining a sound pressure effective value of the sound pressure signal based on the frequency domain signal and according to Parseval's theorem; and converting the sound pressure effective value into the total sound pressure level of the noise.

Abstract: A method and an apparatus for displaying information of a motor are provided. The method includes: acquiring a target category identifier of a target motor; determining a category parameter interface according to the target category identifier, and displaying the category parameter interface, wherein the category parameter interface displays a category parameter tag that prompts a user to enter parameter information corresponding to the category parameter tag; acquiring target parameter information entered by the user via the category parameter interface; and obtaining target display information corresponding to the target category identifier according to the target parameter information, and displaying the target display information.

Abstract: A knob device for vehicle includes a knob unit and a locking unit. The knob unit includes a rotating cover, a rotary shaft and a motor configured to drive the rotating cover to vibrate. The locking unit includes a rotary wheel which includes a main body fixed to the rotary shaft and locking notches formed at a periphery of the main body. The locking notches are sunk from the periphery of the main body toward a center of the main body in radial directions of the main body. The locking unit further includes a locking pole configured to be inserted into one of the locking notches to block rotation of the rotary wheel, and an actuator configured to drive the locking pole to move. The knob device applies a locking unit which is capable of locking the rotary wheel, thereby realizing diverse use requirements.

Abstract: A knob device for vehicle includes a knob unit and a locking unit. The knob unit includes a rotating cover with an open end, a rotary shaft mounted to the open end, and a motor fixed to the rotating cover for driving the rotating cover to vibrate. The locking unit includes a rotary wheel which includes a main body fixed to the rotary shaft and latching teeth formed at a periphery of the main body and distributed in a ring around a central axis of the rotary wheel, a gap being defined between two neighboring teeth, an iron core configured to be inserted into the gap to limit rotation of the rotary wheel, and a solenoid connected to the iron core for driving the iron core to move. The knob device can realize locking of the rotary wheel clockwise and counter-clockwise, meeting requirement of diverse use.

Abstract: The embodiments of the present invention provide a method and an apparatus for motor excitation signal generation, and a computer device. The method includes: obtaining an impulse response function and an impedance curve of a target motor; obtaining a Noise to Signal Ratio (NSR) parameter and a target vibration signal corresponding to the target motor; and generating a target motor excitation signal corresponding to the target vibration signal based on the impulse response function, the impedance curve, the NSR parameter, and the target vibration signal. In this way, the efficiency and accuracy of the motor excitation signal generation can be improved.

Abstract: The present disclosure provides a knob device for vehicle which includes a knob unit and a locking unit. The knob unit includes a rotating cover, a rotary shaft and a motor configured to drive the rotating cover to vibrate. The locking unit includes a rotary wheel which includes a main body fixed to the rotary shaft and locking teeth formed at a periphery of the main body. The locking tooth includes a first end, a second end and a surface connecting the first end and the second end. A distance between the first end and the central axis of the rotary wheel is greater than a distance between the second end and the central axis. The locking unit further includes a locking pole configured to abut the first end to limit rotation of the rotary wheel clockwise, and an actuator configured to drive the locking pole to move.

Abstract: The embodiments of the present invention relate to the field of audio signal processing and disclose a method for adjusting sound quality, which includes: acquiring an audio signal to be adjusted; acquiring a resonance frequency and a frequency response curve of an exciter; forming a recursive filter and determining a filter parameter of the recursive filter according to the frequency response curve; inputting the audio signal to be adjusted into the recursive filter within a preset range of the resonance frequency to acquire an equalizing signal; performing preset sound effect processing on the equalizing signal to acquire a signal to be excited, wherein the preset sound effect processing at least includes inputting the equalizing signal into a non-recursive filter, and inputting the signal to be excited into the exciter to output an audio signal. The present invention further provides a tone quality adjusting device.

Abstract: A method and a system for measuring a total sound pressure level of noise, and a computer readable storage medium are provided. The method includes: obtaining a time domain digital signal of a sound pressure signal of the noise; obtaining a frequency domain signal of the sound pressure signal according to the time domain digital signal of the sound pressure signal; obtaining a sound pressure effective value of the sound pressure signal based on the frequency domain signal and according to Parseval's theorem; and converting the sound pressure effective value into the total sound pressure level of the noise.

Abstract: The embodiments of the present invention relate to the field of audio signal processing and disclose a method for adjusting sound quality, which includes: acquiring an audio signal to be adjusted; acquiring a resonance frequency and a frequency response curve of an exciter; forming a recursive filter and determining a filter parameter of the recursive filter according to the frequency response curve; inputting the audio signal to be adjusted into the recursive filter within a preset range of the resonance frequency to acquire an equalizing signal; performing preset sound effect processing on the equalizing signal to acquire a signal to be excited, wherein the preset sound effect processing at least includes inputting the equalizing signal into a non-recursive filter, and inputting the signal to be excited into the exciter to output an audio signal. The present invention further provides a tone quality adjusting device.