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 for compensating a signal of a motor includes acquiring an original signal and nonlinear parameters of the motor; calculating a compensation signal for the original signal according to the acquired nonlinear parameters; and loading the calculated compensation signal into the motor to excite the motor to vibrate. An electronic apparatus and a storage medium are also provided. In this method, the original excitation signal is compensated for nonlinearity according to the nonlinear motor parameters, and is then used for exciting the motor. Therefore, the actual vibration effect can be closer to the expected effect as designed, which can bring more desirable tactility experience.

Abstract: A method for evaluating a vibrating sensation similarity may generally include acquiring waveforms of two acceleration signals and waveforms of two excitation signals corresponding to the two acceleration signals, respectively; and, based on the waveforms of the two acceleration signals and the waveforms of the corresponding excitation signals, calculating a similarity between the waveforms of the two acceleration signals by a method for calculating an acceleration similarity to thereby evaluate a vibrating sensation similarity of devices corresponding to the two acceleration signals according to the similarity between the waveforms of the two acceleration signals. The method for calculating an acceleration similarity may include a method for calculating a similarity between the two acceleration signals from the perspective of numerical values and/or a method for calculating a similarity between the two acceleration signals from the perspective of user experience.

Abstract: A method for adaptive motor control includes acquiring current parameters in an operation process of the motor at a current moment; determining a type of a region in which the motor operates at the current moment according to the current parameters; triggering a corresponding motor model according to the type of the region in which the motor operates at the current moment; and inputting the current parameters into the corresponding motor model, generating control parameters for motor operation according to the current parameters, and controlling the operation of the motor according to the control parameters for motor operation. An apparatus and a computer-readable storage medium are also disclosed. In comparison with the conventional motor control which uses the single nonlinear model, the motor control method disclosed herein can greatly improve the reliability of the control.

Abstract: A method and an apparatus for testing a nonlinear parameter of a motor are provided. The method includes exciting the motor to vibrate by an excitation signal; performing synchronous information acquisition on the vibrating motor to obtain a measured voltage value and a measured current value; acquiring an initial value of a linear parameter and an initial value of a nonlinear parameter of the motor; calculating a target value of the linear parameter of the motor according to the measured voltage value, the measured current value and the initial value of the linear parameter; performing adaptive filtering calculation according to the measured voltage value, the measured current value, the target value of the linear parameter and the initial value of the nonlinear parameter to obtain a target value of the nonlinear parameter of the motor. A terminal device and a computer-readable storage medium are also provided.

Abstract: A method for generating a control signal is provided, including: acquiring a relationship curve between an initial signal and time, and the relationship curve includes several sampling points and a value of the initial signal and the time corresponding to each sampling point; determining whether the value of the initial signal is 0; constructing an optimization function according to the relationship curve if the value of the initial signal is not 0; multiplying the value of the initial signal corresponding to each sampling point by a corresponding value of the optimization function to obtain an optimized value of each sampling point; generating a control signal according to a corresponding relationship between the optimized value and time, where the control signal is used to drive the motor to vibrate. The method for generating control signals of the present disclosure can reduce an oscillation response and improve a user experience.

Abstract: A motor parameter tracking method, which can dynamically track motor parameters includes: exciting, with a voltage excitation signal, a motor to operate, and acquiring at least one actual voltage across two terminals of the motor and an actual current flowing through the motor in an operating state; modelling a voltage error of the motor based on the at least one actual voltage and the actual current to obtain a voltage error function of the motor; and performing iteration on at least one motor parameter based on the voltage error function and a preset iterative step. With the method, the difference between different batches of motors can be adaptively adjusted, and parameter changes caused by a motor temperature, a motor posture and the like can be dynamically tracked. All motor parameters are provided with a same step, which reduces the difficulty of parameter adjustment and the sensitivity of algorithms to parameters.

Abstract: An actuator excitation signal processing method includes the step of obtaining original excitation signal. An encrypted excitation signal was obtained by encrypting the original excitation signal. Vibration waveforms generated by the encrypted excitation signal and the original excitation signal while acting on the actuator are same. The encrypted excitation signal is used to drive the actuator to vibrate. The actuator excitation signal processing method can effectively solve the problem that the excitation signal might be stolen by encrypting the original excitation signal. In addition, an actuator signal processing device, a computer equipment and a kind of storage medium are also proposed.

Abstract: The invention provides a vibration controlling method which amplifies a steady state voltage and generates a first voltage signal for controlling the vibrator to accelerate vibration to a target vibration amplitude lower than the steady state vibration amplitude, and then attenuates the startup voltage to the steady state voltage to generate a second voltage signal for controlling the vibrator to vibrate from the target vibration amplitude to the steady state vibration amplitude. Through the implementation of the invention, the steady state voltage is amplified and used as an excitation voltage of the acceleration section of vibrator vibration, and then it steadily decreases to the steady state voltage, which effectively shortens the acceleration time for the early stage of the vibrator vibration response and reduces the hysteresis of the vibrator vibration fed back to the user.

Abstract: A cable-holding device with sealing assembly includes a body having a main unit, a first connecting portion and a second connecting portion, a sealing assembly on the body, and an adjustment element on the second connecting portion. The body has a connecting hole, and the second connecting portion is extended with plural clamping arms. The sealing assembly includes a first sealing portion outside the first connecting portion, a second sealing portion inside the clamping arms to form a tightening port, and a connecting portion between the first sealing portion and the second sealing portion. On the second connecting portion, the adjustment element includes a first movement state which forms a tightening state on the tightening port, and a second movement state which changes the tightening port from the tightening state into a non-tightening state gradually.

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: The present disclosure provides a method for measuring bandwidth of linear motor, including the following steps: step S1: setting a frequency distribution of an excitation signal; step S2: with reference to a target displacement level, measuring a steady state displacement peak of a motor vibrator at each frequency point of the excitation signal, and obtaining a frequency response curve with reference to the target displacement level; step S3: according to the frequency response curve obtained in step S2, determining an upper frequency limit and a lower frequency limit with reference to the target displacement level, and obtaining a bandwidth of the linear motor by calculating a difference between the upper frequency limit and the lower frequency limit.

Abstract: A power switching circuit receives a first power, a second power and a switching signal, and generates an output power. The power switching circuit includes a first power path and a second power path. The first power path is connected with the first power. The second power path is connected with the second power. When the switching signal in a logic high level, the first power path is in a conducting state and the second power path is in a non-conducting state. Consequently, the first power is selected as the output power by the power switching circuit. When the switching signal in a logic low level, the first power path is in the non-conducting state and the second power path is in the conducting state. Consequently, the second power is selected as the output power by the power switching circuit.

Abstract: The present disclosure relates to the technical field of electronic devices, and discloses a method and an apparatus for controlling motor vibration. The method includes: obtaining an input signal based on an expected motor vibration curve, inputting a digital signal sequence of the input signal to an equalizer, and obtaining an output signal after processing by the equalizer, and inputting the output signal to a motor to control vibration of the motor, where the equalizer is a digital filter constructed based on a damping factor ? and a resonance frequency ?n of the motor, and a preset system sampling frequency fs, a preset damping factor ?d, and a preset cut-off frequency ?d. The method and apparatus provided in embodiments of the present disclosure have an advantage that an actual vibration effect of the motor can be consistent with an expected motor vibration curve.

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: Provided a haptic feedback method, including: step S1 of algorithmically training an audio clip containing a known audio event type to obtain an algorithm model; and step S2 of obtaining an audio, identifying the audio by the algorithm model to obtain different audio event types in this audio, matching, according to a preset rule, the audio event types with different vibration effects as a haptic feedback and outputting the haptic feedback. Compared with the related art, the present haptic feedback method provides users with real-time haptic feedback when applied to a mobile electronic product, thereby achieving excellent use experience of the mobile electronic product.

Abstract: A method for recognizing a motor system is provided. The method includes steps of: establishing a functional series filter model for describing a motor system; generating a logarithmic sweep signal; feeding the logarithmic sweep signal to the motor system and obtaining, by an accelerometer, a vibration acceleration output by the motor system; generating an inverse signal of the logarithmic sweep signal generated; convolving the vibration acceleration with the inverse signal to obtain a one-dimensional impulse response sequence; intercepting the one-dimensional impulse response sequence by using a window function to obtain impulse response sequences; solving kernel functions according to the impulse response sequences, substituting the kernel functions into a recognition formula of the motor system, and describing and identifying the motor system through the recognition formula.

Abstract: A power switching circuit receives a first power, a second power and a switching signal, and generates an output power. The power switching circuit includes a first power path and a second power path. The first power path is connected with the first power. The second power path is connected with the second power. When the switching signal in a logic high level, the first power path is in a conducting state and the second power path is in a non-conducting state. Consequently, the first power is selected as the output power by the power switching circuit. When the switching signal in a logic low level, the first power path is in the non-conducting state and the second power path is in the conducting state. Consequently, the second power is selected as the output power by the power switching circuit.

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 touch button with better feel in pressing is disposed on a casing, including a touch board having a touch area and a press area, a fixing element disposed on a side of the touch board to form a difference in height from the touch board, an elastic connector for connecting the touch board with the fixing element and forming a state of elastic vertical displacement between the press area and the casing, and plural elastic supporters forming an elastic supporting force to the press area, thereby enabling the press area to manifest the state of elastic vertical displacement on the casing by the elastic supporting force.