WO2018225401A1

WO2018225401A1 - Simulation device using auditory model

Info

Publication number: WO2018225401A1
Application number: PCT/JP2018/016238
Authority: WO
Inventors: 眞徳渡部; 洋祐田部; 和人大山; 明広蘆田; 吉田　毅
Original assignee: 日立オートモティブシステムズ株式会社
Priority date: 2017-06-07
Filing date: 2018-04-20
Publication date: 2018-12-13
Also published as: JP2018206204A; JP6872981B2

Abstract

A simulation device using a noise-reducible auditory model is realized that takes advantage of a simulation of model-based development and improves sound quality beforehand in design stages of an automobile, etc. An exciting force model 60 is a simulation model for calculating an exciting force, and, if the exciting force model 60 is for the case of electromagnetic exciting force of an electric motor, a current, etc., are inputted to the exciting force model 60 and the electromagnetic exciting force is calculated. A sound-vibration model 7 accepts the output of the exciting force model 60 as input thereto and outputs a sound pressure due to the vibration of the housing or gear case, etc., of the electric motor. An auditory model 8 accepts the sound pressure of the sound-vibration model 7 as input thereto and calculates and outputs an electric signal representing the sensitiveness of humans, the sensual quantity felt by human brains, etc. It is possible to design the exciting force model 60 on the basis of the sensual quantity of humans outputted from the auditory model 8 so that the sensual quantity of humans becomes an appropriate value.

Description

Simulation device using auditory model

The present invention relates to a device for reducing noise of a vehicle or the like.

In automobiles and automotive equipment, it is important to improve quietness. In recent years, from the viewpoint of improving comfort, not only reducing noise, such as reducing annoying sounds, but also improving the quality of sound such as delight design. The need for is increasing.

In particular, since electric vehicles are motor driven, they are quieter than gasoline-powered vehicles driven by engines, so it is considered that there is a high need for improved sound quality for automobile equipment.

On the other hand, in automobiles and automobile equipment, upstream design based on behavior simulation of vehicles and equipment using model-based development has become widespread for the purpose of shortening product development and reducing costs.

This is because model-based development makes it possible to perform performance evaluations and functional evaluations on simulations that were previously performed on prototypes.

In recent years, it is considered that model-based development has been applied not only to behavioral simulation but also to vibration noise simulation.

Various inventions have been made to improve the quietness of automobiles and automobile equipment. In particular, the inventions described in Patent Literature 1, Patent Literature 2, and Patent Literature 3 are disclosed as technologies relating to sound quality improvement and acoustic simulation for automobiles.

In Patent Document 1, for a vehicle power supply device, a sound wave having a phase opposite to that of voltage converter noise is output from a speaker to reduce noise.

In Patent Document 2, a floor panel acceleration signal is detected to calculate a control signal for reducing road noise and applied from an actuator to reduce vehicle interior noise.

Furthermore, in Patent Document 3, the interior of the vehicle is modeled, the impulse response between the listening position and the speaker is calculated, the sound field is tuned to an ideal acoustic environment, and running noise is added to the vehicle. The sound of the room is reproduced.

JP 2009-153262 A JP 2009-073417 A JP 2005-338453 A

However, the techniques described in Patent Document 1 and Patent Document 2 are techniques for reducing noise by adding anti-phase sound waves, but do not consider measures for reducing noise in advance at the design stage of automobiles and the like. Absent.

The technique described in Patent Document 3 is a technique for simulating vehicle interior noise. Considering measures for reducing noise in advance at the design stage of an automobile or the like using the simulated vehicle interior noise. Not.

The present invention has been made in view of the above points, and an object of the present invention is to use model-based development simulation to improve sound quality in advance and reduce noise at the design stage of automobiles and the like. It is to realize a simulation device using an auditory model.

In order to achieve the above object, the present invention is configured as follows.

In the simulation apparatus using the auditory model, the sound pressure is calculated based on the excitation force model that outputs a signal indicating the excitation force and the signal indicating the excitation force that is output from the excitation force model, A sound model that outputs a signal indicating a sound pressure; and an auditory model that converts the signal indicating the sound pressure output from the sound vibration model into a parameter relating to an auditory sound and outputs the parameter.

According to the present invention, it is possible to realize a simulation apparatus using an auditory model capable of reducing noise by improving sound quality in advance at the design stage of an automobile or the like by utilizing model-based development simulation.

It is a schematic block diagram of the simulation apparatus using the simulation model of Example 1 which concerns on this invention. It is a schematic block diagram of the simulation apparatus using the simulation model of Example 2 which concerns on this invention. It is a figure which shows the example in case the multiple sound quality judgment part of Example 2 exists. It is a figure which shows the example in case a some different signal is output from the auditory model of Example 2. FIG. It is a schematic block diagram of the simulation apparatus using the simulation model of Example 3 which concerns on this invention. It is a schematic block diagram of the simulation apparatus using the simulation model of Example 4 which concerns on this invention. It is a schematic block diagram of the simulation apparatus using the simulation model of Example 5 which concerns on this invention. It is a schematic block diagram of the simulation apparatus using the simulation model of Example 6 which concerns on this invention. It is a schematic block diagram of the auditory model in the simulation apparatus of Example 7 of this invention. It is a schematic block diagram of the auditory model in the simulation apparatus of Example 8 of this invention. It is a schematic block diagram of the auditory model in the simulation apparatus of Example 9 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

Example 1
FIG. 1 is a schematic configuration diagram of a simulation apparatus 100 using a simulation model according to the first embodiment of the present invention. As shown in FIG. 1, the simulation apparatus 100 includes an excitation force model 60, a sound vibration model 7, and an auditory model 8.

The excitation force model 60 is a simulation model that calculates the excitation force and outputs an excitation force signal indicating the excitation force. The excitation force model 60 calculates the excitation force based on the input signal inside the excitation force model 60. To do. For example, when the excitation force model is an electromagnetic excitation force of an electric motor, an electric current or the like is input from the excitation force data output model (not shown in FIG. 1) to the excitation force model 60 and electromagnetic excitation is performed. Calculate the force.

Further, for example, if the excitation force model is a gear meshing excitation force, a torque or the like is input from the excitation force data output model (not shown in FIG. 1) to the excitation force model 60 and meshing applied. Calculate the vibration force.

The sound vibration model 7 is a simulation model that receives the excitation force signal that is the output of the excitation force model 60 and outputs a sound pressure signal indicating the sound pressure. For example, a housing of an electric motor or a gear case corresponds to this, and a sound pressure is output by housing or vibration of the case. It is assumed that the sound vibration model 7 returns the vibration speed to the excitation force model 60 as a parameter.

The auditory model 8 receives the sound pressure signal output from the sound vibration model 7 as an input and calculates and outputs an electrical signal such as a nerve firing pattern, such as a human sensibility or a sensuous amount felt by the human brain. It is a simulation model.

This auditory model 8 models a human ear, and can represent a cochlea, a basement membrane, or the like with an octave band filter or the like. For example, when the sound pressure from the motor housing is input from the sound vibration model 7 to the auditory model 8, the auditory model 8 uses a sensory amount (a neural firing pattern felt by the human brain based on the input sound pressure signal as a sensory amount ( (Electric signal). The auditory model 8 will be described in detail in another embodiment described later.

Based on the human sensory quantity (electric signal) output from the auditory model 8, the excitation force model 60 such as an electric motor can be designed so that the human sensory quantity has an appropriate value.

According to the first embodiment of the present invention, the simulation model can predict not only the sound pressure but also the sensation such as the sensibility that the person actually hears with the ear and feels in the brain. It becomes possible to calculate.
(Example 2)
Next, a second embodiment of the present invention will be described.

FIG. 2 is a schematic configuration diagram of a simulation apparatus 200 using the simulation model of the second embodiment according to the present invention. As shown in FIG. 2, the simulation apparatus 200 includes a sound quality determination unit 9 at the output destination of the auditory model 8 in addition to the configuration of the simulation apparatus 100 of the first embodiment.

The sound quality judgment unit 9 functions as a human brain. The sound quality determination unit 9 then determines whether the sound is good or bad (OK / NG) based on the signal input from the auditory model 8 and determines whether the sound is good or bad (OK / NG). When several stages of evaluation such as evaluation, or when good (OK) is 0 and bad (NG) is 1, 0 to 1 are expressed by a function such as a curve, and good and bad between 0 and 1 (OK) / NG) can also be provided.

In addition, the sound quality determination unit 9 can use not only the above-mentioned good / bad (OK / NG) but also adjective pairs such as pleasant / unpleasant, quiet / noisy, favorable / unfavorable as a criterion. It is also possible to judge this step by step.

FIG. 3 is a diagram illustrating an example when there are a plurality of sound quality determination units 9 according to the second embodiment. As shown in FIG. 3, the sound quality determination unit 9 may be configured to include a plurality of sound

quality determination units

91, 92, and 93.

For example, the sound quality determination unit 91 determines “pleasant / unpleasant” based on the same signal from the auditory model 8, and the sound quality determination unit 92 determines “quiet / noisy” based on the same signal from the auditory model 8. Judgment ". Further, the sound quality determination unit 93 determines “preferable / not preferable” based on the same signal from the auditory model 8.

Furthermore, the output from the auditory model 8 is not limited to the same signal, and there may be a plurality of signals as long as they are calculated based on the sound pressure signal input to the auditory model 8.

FIG. 4 is a diagram illustrating an example in which a plurality of different signals are output from the auditory model 8. In FIG. 4, a plurality of different signals output from the auditory model 8 are, for example, amplitude and pitch calculated based on sound pressure, and these are input to the sound quality determination unit 9.

It should be noted that the various sound

quality judgment units

9, 91, 92, 93, etc. described above can also combine them to generate a new sound quality judgment unit.

According to the second embodiment of the present invention, it is possible to calculate a silent product at the design stage based on a sensory quantity such as sensibility that a person actually hears with his / her ears and feels with a simulation model. The human brain produces sounds such as judgment of 0 or 1, such as good / bad output (OK / NG), gradual evaluation such as 5 grades, judgment including ambiguity such as slightly uncomfortable and very favorable Various judgments that are considered to be performed by pressure judgment can be made on the simulation.

(Example 3)
Next, Embodiment 3 of the present invention will be described.

FIG. 5 is a schematic configuration diagram of a simulation apparatus 300 using the simulation model of the third embodiment according to the present invention. As shown in FIG. 5, the third embodiment is applied to an electric vehicle. A simulation apparatus 300 according to the third embodiment is a model for simulating the behavior of an electric vehicle, and includes an inverter model 1 that drives an electric motor, a motor model 2 that models an electric motor for driving an electric vehicle, A gear box model 3 that models a gear box having a gear that transmits the torque of the electric motor, a vehicle model 4, and a controller (controller model) 5 that outputs control parameters for controlling the inverter model 1 are provided.

Further, the simulation apparatus 300 includes a motor excitation force model 61 for calculating the excitation force, a gear box excitation force model 62 for calculating the excitation force, a sound vibration model 7 for calculating the sound pressure, an electric signal, and the like. The auditory model 8 for calculating the sensory amount and the sound quality determining unit 9 for determining the sensory amount and the like are provided.

In FIG. 5, the inverter model 1 outputs a voltage signal indicating voltage to the motor model 2, the motor model 2 outputs a signal indicating torque to the gear box model 3, and the gear box model 3 indicates torque to the vehicle model 4. Output a signal. The inverter model 1, the motor model 2, the gear box model 3, the vehicle model 4, the controller 5, the motor excitation force model 61, and the gear box excitation force model 62 are simulation models.

The inverter model 1, the motor model 2, the gear box model 3, and the controller 5 constitute an excitation force data output model.

The motor excitation force model 61 and the gear box excitation force model 62 correspond to the sound vibration model 7 of the first embodiment.

In the third embodiment of the present invention, the motor model 2 returns a signal indicating the current to the inverter model 1 as a parameter, the gear box model 3 returns a signal indicating the rotational speed to the motor model 2 as a parameter, and the vehicle model 4 It is assumed that a signal indicating the rotational speed is returned to the gear box model 3 as a parameter.

The motor model 2 outputs a signal indicating current to the motor excitation force model 61 as excitation force data, and the gear box model 3 outputs a signal indicating torque to the gear excitation force model 62 as excitation force data. Yes. In the third embodiment of the present invention, a signal indicating a voltage is returned from the motor excitation force model 61 to the motor model 2 as a parameter, and a signal indicating the rotation speed is transmitted from the gear excitation force model 62 to the gear box model 3 as a parameter. It is assumed that it will be returned.

The motor excitation force model 61 and the gear excitation force model 62 calculate an electromagnetic excitation force, a gear meshing excitation force, and the like based on an input current and torque, and input a signal indicating them to the sound vibration model 7. .

In the third embodiment of the present invention, it is assumed that the vibration speed is returned as a parameter from the sound vibration model 7 to the motor excitation force model 61 and the gear excitation force model 62.

The sound vibration model 7 calculates the sound pressure based on the respective vibration forces from the motor vibration force model 61 and the gear vibration force model 62.

The auditory model 8 receives the signal indicating the sound pressure, which is the output of the sound vibration model 7, and calculates and outputs an electrical signal such as a nerve firing pattern, such as a human sensibility or a sensory amount sensed by the human brain. To do.

The sound quality determination unit 9 compares the signal (signal indicating the sound quality) input from the auditory model 8 with a predetermined threshold value, and determines whether it is greater than the threshold value, thereby determining whether it is good or bad (OK / NG) or the like. to decide. Here, when the sound quality judgment unit 9 judges that NG, that is, impossibility (the signal input from the auditory model 8 is larger than a predetermined threshold value), an NG judgment signal (impossibility judgment signal) is sent to the controller 5. The control command value is changed from the controller 5 to the inverter model 1. For example, when the sound quality determination unit 9 makes an NG determination, the controller 5 controls the inverter model 1 to distribute a PWM (Pulse Width Modulation) voltage three-phase pulse interval as a control parameter from a certain state. And the simulation is executed again, and the control parameter is updated until the sound quality judgment unit 9 is OK, that is, the signal is input (the signal input from the auditory model 8 is less than a predetermined threshold value), and the motor excitation force model is updated. 61. Excitation force data output to the gear excitation force model 62 is changed. If the sound quality determination unit 9 makes an OK determination, the process ends.

According to the third embodiment of the present invention, as in the first embodiment, it is possible to improve the sound quality at the design stage, and it is possible to calculate a silent product that is satisfactory in terms of feeling.

Furthermore, in the case of an automobile device such as an electric vehicle, it is possible to achieve both basic performance such as motor output and sound quality improvement.

Furthermore, there is an effect that it is not necessary to make a prototype because structure change simulation can be performed on the model.

In the third embodiment, the gear box model 3, the gear excitation force model 62, and the vehicle model 4 may be omitted, and the configuration used only for the motor design of the electric vehicle.

Example 4
Next, a fourth embodiment of the present invention will be described.

FIG. 6 is a schematic configuration diagram of a simulation apparatus 400 using the simulation model of the fourth embodiment according to the present invention. Since the configuration up to the sound quality determination unit 9 in the fourth embodiment is the same as that in the third embodiment, a description thereof will be omitted. Here, the configuration after the sound quality determination unit 9 will be described.

In the third embodiment, when the sound quality determination unit 9 determines NG, the controller 5 performs sound quality improvement by control such as changing the PWM voltage, whereas in the fourth embodiment, the sound quality determination unit 9 determines NG. When the determination is made, the difference from the third embodiment is that the sound quality is improved by an excitation force or a structure change.

That is, if the sound quality determination unit 9 determines NG, an impossibility determination signal is output to the motor excitation model 61 or the gear excitation force model 62, and the motor excitation model 61 or the gear excitation force model 62 The parameters relating to the vibration force calculation are updated, the excitation force is calculated again, and the parameters are tuned until the sound quality judgment unit 9 becomes OK. Alternatively, if the sound quality determination unit 9 determines NG, an impossibility determination signal is output to the sound vibration model 7, and the sound vibration model 7 updates and updates parameters related to sound pressure calculation such as the structure of the sound vibration model 7. The sound pressure is calculated again using the parameters, and the parameters are tuned until the sound quality judgment unit 9 becomes OK.

According to the fourth embodiment of the present invention, as in the first embodiment, it is possible to improve the sound quality at the design stage, and it is possible to calculate a silent product that can be satisfied sensibly.

Furthermore, the same effect as in the third embodiment can be obtained.

(Example 5)
Next, a fifth embodiment of the present invention will be described.

FIG. 7 is a schematic configuration diagram of a simulation apparatus 500 using the simulation model of the fifth embodiment according to the present invention. In the fifth embodiment, the sound quality determination unit 9 determines OK / NG, and the flow of the model up to the point where the controller 5 executes the current control of the inverter model 1 is the same as that of the third embodiment. A difference in configuration from the third embodiment will be described.

In the fifth embodiment, a specification determination unit 10 that determines whether or not the specification of the motor model 2 is satisfied is provided. When the sound quality determination unit 9 determines that the specification is OK, the specification determination unit 10 determines the specification. The unit 10 determines whether motor performance, which is one of various performances of the electric vehicle, for example, motor torque satisfies a predetermined motor specification. If the specification determination unit 10 determines NG, the specification determination unit 10 outputs a specification impossibility determination signal to the controller model 5. The controller model 5 to which the specification disapproval determination signal is input performs control by changing the control parameter of the inverter model 1 again so that both the sound quality determination unit 9 and the specification determination unit 10 can be satisfied. This makes it possible to achieve both basic performance and sound quality improvement.

According to the fifth embodiment of the present invention, as in the first embodiment, it is possible to improve the sound quality at the design stage, and it is possible to calculate a silent product that is satisfactory in terms of feeling.

Furthermore, in addition to the same effects as those of the third and fourth embodiments, there is an effect that the motor specifications can be satisfied on the model.

(Example 6)
Next, a sixth embodiment of the present invention will be described.

FIG. 8 is a schematic configuration diagram of a simulation apparatus 600 using the simulation model of the sixth embodiment according to the present invention. In the sixth embodiment, the sound quality determination unit 9 determines OK / NG and executes parameter adjustment related to the calculation of the excitation force and sound pressure of the motor excitation force model 61, the gear excitation force model 62, and the sound vibration model 7. Since the configuration up to this point is the same as that of the fourth embodiment, a description thereof will be omitted. Here, the difference in configuration from the fourth embodiment will be described.

In the sixth embodiment, a specification determination unit 10 that determines whether or not the specification of the motor model 2 is satisfied is provided. When the sound quality determination unit 9 determines OK (sound quality is acceptable), the specification determination is performed. The unit 10 determines whether motor performance, which is one of various performances of the electric vehicle, for example, motor torque, satisfies a specification. If the specification determining unit 10 determines that NG (the motor torque does not satisfy the specification), a specification impossibility determination signal is output to the motor excitation force model 61, the gear excitation force model 62, and the sound vibration model 7. The motor excitation force model 61, the gear excitation force model 62, and the sound vibration model 7 again execute parameter adjustments related to the calculation of the excitation force and the sound pressure, and both the sound quality determination unit 9 and the specification determination unit 10 are satisfied. Control as you can. This makes it possible to achieve both basic performance and sound quality improvement.

According to the sixth embodiment of the present invention, similar to the first embodiment, it is possible to improve the sound quality at the design stage, and it is possible to calculate a silent product that can satisfy the sense. Further, since the structure change simulation can be performed on the model, there is an effect that it is not necessary to make a prototype, and there is an effect that both basic performance and sound quality improvement can be achieved.

(Example 7)
Next, a seventh embodiment of the present invention will be described.

FIG. 9 is a schematic configuration diagram of the auditory model 8 in the simulation apparatus according to the seventh embodiment of the present invention. As the configuration other than the auditory model 8 in the simulation apparatus, any of the configurations of the first to sixth embodiments can be applied.

9, the auditory model 8 of the seventh embodiment has a configuration in which frequency decomposition by the cochlea is performed by the 1/4 octave filter unit 81 and nerve firing by the basement membrane is performed by the Hilbert transform unit 82. A sound pressure signal input from the sound model 7 to the input unit 80 of the auditory model 8 is converted into a sound pressure divided into bands by the 1/4 octave filter 81, and the sound pressure divided into the bands is converted into a Hilbert converter 82. Is converted into a nerve firing pattern by the Hilbert transform executed in step S1, and is output to the sound quality determination unit 9 as a parameter relating to the auditory sound.

This makes it possible to output an electrical signal representing a human sensory quantity such as a nerve firing pattern based on the sound pressure signal.

According to the seventh embodiment of the present invention, the same effects as in the first to sixth embodiments can be obtained.

(Example 8)
Next, an eighth embodiment of the present invention will be described.

FIG. 10 is a schematic configuration diagram of the auditory model 8 in the simulation apparatus according to the eighth embodiment of the present invention. As the configuration other than the auditory model 8 in the simulation apparatus, any of the configurations of the first to sixth embodiments can be applied.

As shown in FIG. 10, in the eighth embodiment, the auditory model 8 is constituted by a neural network. The sound pressure input from the sound vibration model 7 to the input unit 80 of the auditory model 8 passes through the plurality of

intermediate layers

831, 832, and 833, and the sound quality is determined from the output layer 834 as an electrical signal that expresses a sense amount. Is output to the unit 9.

The weighting of the

intermediate layers

831, 832, and 833 of the neural network is performed by learning such as deep learning. Based on the sound pressure signal, it is possible to output an electrical signal representing a human sensory amount such as a nerve firing pattern.

According to the eighth embodiment of the present invention, the same effects as in the first to sixth embodiments can be obtained.

Example 9
Next, a ninth embodiment of the present invention will be described.

FIG. 11 is a schematic configuration diagram of the auditory model 8 in the simulation apparatus according to the ninth embodiment of the present invention. As the configuration other than the auditory model 8 in the simulation apparatus, any of the configurations of the first to sixth embodiments can be applied.

As shown in FIG. 11, in the ninth embodiment, the auditory model 8 includes a function calculation unit 84. That is, the sound pressure signal input from the sound vibration model 7 to the input unit 80 of the auditory model 8 is input to the function calculation unit 84 and converted into a sensory amount or the like. For example, let us consider a case where a sound specialist or a customer listens to the sound pressure generated from an automobile device and gives a score. In that case, a correlation function between the sound pressure and the score is obtained by sensory evaluation or sound quality evaluation.

For example, assuming that the score can be expressed by a function of the sound quality evaluation scales of loudness, sharpness, roughness, and fluctuation intensity, the correlation function between the sound pressure and the score can be obtained by calculating each coefficient.

An example of the correlation function f (p) between the sound pressure p and the score is shown by the following equation (1).

f (p) = aL + bS + cR + dT + C (1)
In the above equation (1), sound pressure, L is loudness, S is sharpness, R is roughness, T is fluctuation intensity, a, b, c and d are coefficients, and C is a constant.

The score obtained from the correlation function calculated by the function calculation unit 84 is input to the sound quality determination unit 9.

According to the ninth embodiment of the present invention, the same effects as in the first to sixth embodiments can be obtained.

It should be noted that the present invention is applicable not only to the improvement of sound quality in the interior of an automobile, but also to the improvement of sound quality for equipment in a factory where workers work.

DESCRIPTION OF SYMBOLS 1 ... Inverter model, 2 ... Motor model, 3 ... Gear box model, 4 ... Vehicle model, 5 ... Controller, 7 ... Sound vibration model, 8 ... Auditory model, 9, 91, 92, 93 ... sound quality judgment unit, 10 ... specification judgment unit, 60 ... excitation force model, 61 ... motor excitation force model, 62 ... gear excitation force model , 80 ... input unit, 81 ... 1/4 octave filter unit, 82 ... Hilbert transform unit, 84 ... function calculation unit, 100, 200, 300, 400, 500, 600 ... simulation Device, 831, 832, 833 ... Intermediate layer of neural network, 834 ... Output layer

Claims

An excitation force model that outputs a signal indicating the excitation force;
Based on a signal indicating the excitation force output from the excitation force model, a sound pressure model that calculates a sound pressure and outputs a signal indicating the sound pressure;
An auditory model that converts a signal indicating the sound pressure output from the sound vibration model into a parameter relating to an auditory sound, and outputs the parameter,
A simulation apparatus using an auditory model characterized by comprising:
In the simulation apparatus using the auditory model according to claim 1,
A simulation apparatus using an auditory model, further comprising: a sound quality determination unit that determines sound quality based on the parameter output by the auditory model.
In the simulation apparatus using the auditory model according to claim 2,
The excitation force data output model for outputting the excitation force data to the excitation force model is further provided, and the sound quality determination unit determines whether the determined sound quality is acceptable or not, and the sound quality is not possible. When the determination is made, an impossibility determination signal is output to the excitation force data output model, and the excitation force data output model changes the excitation force data output to the excitation force model. Simulation device using an auditory model.
In the simulation apparatus using the auditory model according to claim 3,
The excitation force data output model includes a motor model that models a motor for driving a vehicle, an inverter model that drives the motor, and a controller model that outputs control parameters for controlling the inverter model to the inverter model. And
The excitation force model includes a motor excitation force model that receives a signal indicating an excitation current data from the motor model and outputs an electromagnetic excitation force.
The simulation apparatus using an auditory model, wherein the controller model updates the control parameter in accordance with an impossibility determination signal from the sound quality determination unit.
In the simulation apparatus using the auditory model according to claim 4,
The excitation force data output model further includes a gear box model obtained by modeling a gear box having a gear for transmitting the torque of the motor.
As the excitation force model, an auditory model having a gear excitation force model that receives a signal indicating torque as excitation force data from the gear box model and outputs a gear meshing excitation force is used. Was a simulation device.
In the simulation apparatus using the auditory model according to claim 2,
The excitation force data output model for outputting the excitation force data to the excitation force model is further provided, and the sound quality determination unit determines whether the determined sound quality is acceptable or not, and when it is not possible A simulation apparatus using an auditory model, wherein an impossibility determination signal is output to the excitation force model, and the excitation force model changes a signal indicating the excitation force output to the sound vibration model.
The simulation apparatus using the auditory model according to claim 6,
The excitation force data output model includes a motor model that models a motor for driving a vehicle, an inverter model that drives the motor, a controller model that outputs control parameters for controlling the inverter model, and the motor A gear box model that models a gear box having a gear that transmits the torque of
The excitation force model is a motor excitation force model that outputs an electromagnetic excitation force when a signal indicating current as excitation force data is input from the motor model, and an excitation force data from the gear box model. A gear excitation force model that receives a signal indicating torque and outputs a gear meshing excitation force;
The sound quality determination unit determines whether the determined sound quality is acceptable or not, and outputs a failure determination signal to the motor excitation force model or the motor excitation force model when the determination is impossible. A simulation device using an auditory model.
In the simulation apparatus using the auditory model according to claim 4,
When the sound quality determination unit determines that the sound quality is acceptable, the sound quality determination unit further includes a specification determination unit that determines whether the motor model satisfies a predetermined motor specification, and the specification determination unit includes the motor model. Output a non-specification determination signal to the controller model when it is determined that the motor specification is not satisfied.
The simulation apparatus using an auditory model, wherein the controller model updates the control parameter in accordance with a specification impossibility determination signal from the specification determination unit.
The simulation apparatus using the auditory model according to claim 7,
When the sound quality determination unit determines that the sound quality is acceptable, the sound quality determination unit further includes a specification determination unit that determines whether the motor model satisfies a predetermined motor specification, and the specification determination unit includes the motor model. When the motor does not satisfy the specifications of the motor, it outputs an impossibility determination signal to the motor excitation force model, the gear excitation force model, or the sound vibration model as a specification impossibility determination signal. A simulation apparatus using an auditory model, wherein the force model, the gear excitation force model, or the sound vibration model updates parameters relating to a motor excitation force, a gear excitation force, or a sound pressure.
In the simulation apparatus using the auditory model according to any one of claims 1 to 9,
The auditory model includes a 1/4 octave filter that divides a sound pressure signal output from the sound vibration model, and a Hilbert transform of the sound pressure signal that is band-divided by the 1/4 octave filter. A simulation apparatus using an auditory model, comprising: a Hilbert transform unit that outputs a parameter.
In the simulation apparatus using the auditory model according to any one of claims 1 to 9,
A simulation apparatus using an auditory model, wherein the auditory model uses a sound pressure signal output from the sound vibration model as a parameter relating to an auditory sound using a neural network.
In the simulation apparatus using the auditory model according to any one of claims 1 to 9,
A simulation apparatus using an auditory model, wherein the auditory model includes a function calculation unit that calculates a sound pressure signal output from the sound vibration model to a parameter relating to an auditory sound.