JP5245791B2 - Noise vibration control device with self-diagnosis function - Google Patents

Description

  The present invention relates to a control apparatus that suppresses noise and vibration of a vehicle by generating sound and vibration having a phase opposite to that of the vehicle, and particularly relates to a noise vibration control apparatus having a self-diagnosis function for a failure.

  Conventionally, for example, the device disclosed in Patent Document 1 is known as the above-described device. In this apparatus, the speaker of the audio device of the vehicle is also used as an actuator for canceling the vehicle interior noise vibration. The reference signal based on the vibration transfer characteristic of the audio device is applied to the reference signal based on the engine rotation to obtain the reference signal. On the other hand, noise vibration in the passenger compartment is detected by a microphone to generate an error signal. Then, LMS (minimum mean square) algorithm calculation is performed based on the reference signal and the error signal, and the filter coefficient of the adaptive filter is sequentially updated so that the error signal from the microphone is minimized based on the calculation result. A cancellation signal is generated through a reference signal through a filter, and the cancellation signal is added to the audio signal of the audio device and output from a speaker, thereby suppressing vehicle noise and vibration.

In addition, this device outputs a reference signal sound by sending the reference signal to a speaker without passing through an adaptive filter by a switch operation of an operator or the like, detects the reference signal sound with a microphone, and sends it to a failure diagnosis circuit. If the signal detected by the microphone does not correspond to the reference signal, the failure diagnosis circuit stops the reference signal sound after a lapse of a predetermined time, and notifies the operator or the like that there is a failure in the input circuit from the microphone.
JP 2007-145326 A

  By the way, in general, noise in a low frequency band is difficult for humans to recognize as sound, and air pressure fluctuations unintentionally pressurize the auditory sense and cause it to be recognized as fatigue. Therefore, even if the diagnosis result of the conventional device is normal, it is difficult for a person to recognize the effect when the noise vibration control device is operating. As a result, there is a problem that when the repair is performed, it is recognized that the repair is not completed even though the repair is completed.

  The present invention advantageously solves the above problems, and the noise vibration control apparatus with a self-diagnosis function according to the present invention has a simulated noise vibration output unit that generates noise vibration along with a self-diagnosis performed by the noise vibration control self-diagnosis unit. Outputs simulated operating noise and / or operating simulated vibration when the control unit is operating, and non-operating simulated noise and / or non-operating simulated vibration when the noise vibration control unit is not operating It is characterized by this.

  According to the noise vibration control device with a self-diagnosis function of the present invention, the simulated noise vibration output unit is in operation when the noise vibration control unit is in operation in conjunction with the self-diagnosis performed by the noise vibration control self-diagnosis unit. Since the simulated noise and / or simulated vibration during operation and the non-operating simulated noise and / or the non-operated simulated vibration when the noise vibration control unit is not operating are output, the operator can At the time of diagnosis, to experience the noise vibration when the noise vibration control unit is in operation and the noise vibration when it is not in operation, to experience the simulated noise and / or simulated vibration with the consciousness concentrated The effect of the noise vibration control device can be clearly recognized.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1 to 3 show a first embodiment of the noise vibration control apparatus with a self-diagnosis function of the present invention. FIG. 1 shows the noise vibration control apparatus with a self-diagnosis function of the first embodiment. FIG. 2 is a flowchart showing the processing executed by the noise vibration control apparatus with a self-diagnosis function of the first embodiment, and FIG. 3 is a noise vibration with a self-diagnosis function of the first embodiment. It is a time chart which shows the simulation noise which a control apparatus outputs.

  The noise / vibration control device of the first embodiment suppresses the noise and vibration of the vehicle by generating the sound and vibration in the opposite phase to the noise and vibration of the vehicle. As shown in FIG. Unit 1, a self-diagnosis unit 2 as a noise vibration control self-diagnosis unit, a simulated noise output unit 3 as a simulated noise vibration output unit, a control circuit 4 as a noise vibration control unit, a changeover switch 5, and an actuator 6 And has.

  The control circuit 4 is constituted by, for example, a normal microcomputer, and the control circuit 4 corrects the reference signal based on the engine rotation of the vehicle based on the vibration transfer characteristic of the actuator 6 as in the conventional noise vibration control device. To generate a reference signal, while detecting a noise vibration in the vehicle interior of the vehicle with a microphone (not shown) to generate an error signal. Then, LMS (minimum mean square) algorithm calculation is performed based on the reference signal and the error signal, and the filter coefficient of the adaptive filter is sequentially updated so that the error signal from the microphone is minimized based on the calculation result. A canceling signal is generated through the reference signal through the adaptive filter, and the canceling signal is output from an actuator 6 formed of, for example, a speaker that is also used as an audio device (not shown), thereby suppressing vehicle noise and vibration.

  The self-diagnosis start instructing unit 1 is composed of, for example, a normal switch. When the switch is operated by, for example, an operator as an operator, the self-diagnosis start instructing signal is sent to the self-diagnosis unit 2, the simulated noise output unit 3, and the switch 5 And output. In the normal mode in which the self-diagnosis start instruction signal is not output from the self-diagnosis start instruction unit 1, the switch 5 connects the control circuit 4 to the actuator 6. Is output once, the self-diagnosis mode is entered, and the self-diagnosis unit 2 and the simulated noise output unit 3 are connected to the actuator 6. When the self-diagnosis unit 2 returns to the normal mode, it returns to the normal mode together with it and connects the control circuit 4 to the actuator 6.

  The simulated noise output unit 3 is configured by a normal oscillation circuit. The simulated noise output unit 3 is, for example, easy to hear for the operator, a predetermined frequency between high frequency and low frequency, and low for the operator to hardly hear. A simulated noise signal such as a signal obtained by mixing a sinusoidal signal with a predetermined frequency is generated and sent to the actuator 6 to be output as simulated noise from the actuator 6, and the output level of the simulated noise signal is controlled by the control circuit 4. Is changed to an output level that is a large level of simulated noise corresponding to a case where the engine is not operating, and an output level that is a level of simulated noise corresponding to the case where the simulated noise is suppressed by the operating control circuit 4.

  The self-diagnosis unit 2 is constituted by, for example, a normal microcomputer. As shown in FIG. 2, the self-diagnosis unit 2 enters a self-diagnosis mode when receiving a self-diagnosis start instruction signal at step S1, and then enters step S2. In the self-diagnosis, for example, the simulated noise output unit 3 outputs the simulated noise from the actuator 6 to detect the simulated noise with the microphone, and the actuator 6 is operating normally. If there is not, the diagnosis is made such as failure of the output system, and failure of the input system when the signal detected by the microphone does not correspond to the simulated noise signal.

  In the subsequent step S3, when the self-diagnosis unit 2 diagnoses the failure as described above, the self-diagnosis unit 2 outputs a self-diagnosis result signal indicating the failure of the noise vibration control device to the simulated noise output unit 3, and the details of the failure are, for example, The self-diagnosis mode is terminated by outputting a display using a screen display device or a display lamp (not shown). If both the output system and the input system are determined to be normal, the self-diagnosis unit 2 outputs a self-diagnosis result signal indicating normality to the simulated noise output unit 3, and the self-diagnosis result indicating normality is displayed on the screen display device or The self-diagnosis mode is terminated by outputting the display with a display lamp or the like.

  When the self-diagnosis unit 2 outputs a self-diagnosis result signal indicating failure or normal in step S3, the simulated noise output unit 3 outputs a simulated noise signal and changes its output level, as shown in FIG. In addition, a simulated noise having a large sound pressure level corresponding to the case where the control circuit 4 is not operating and a simulated noise having a sound pressure level corresponding to the case where the simulated noise is suppressed by the operating control circuit 4 are determined for a predetermined time. Output from the actuator 6 alternately (for example, 3 seconds).

  According to the noise and vibration control device of the first embodiment, the simulated noise output unit 3 is accompanied by the simulated noise during operation when the control circuit 4 is operating, along with the self-diagnosis performed by the self-diagnosis unit 2. Since the non-operating simulated noise when the control circuit 4 is not operating is output from the actuator 6, the operator can simulate and operate the simulated noise when the control circuit 4 is operating during the self-diagnosis of the device. Since the simulated noise can be experienced with the consciousness concentrated, the effect of the noise vibration control device can be clearly recognized. In addition, since the operator can experience the simulated noise when the control circuit 4 is operating and not, the effect of the noise vibration control device can be stored. For example, the effect of the noise vibration control device can be recognized even while traveling.

  According to the noise vibration control apparatus of the first embodiment, the simulated noise having a large sound pressure level corresponding to the case where the control circuit 4 is not operating and the simulated noise are suppressed by the operating control circuit 4. Since the simulated noise of the sound pressure level corresponding to the case is alternately output every predetermined time (for example, 3 seconds), the simulated noise is automatically switched, so there is no extra work and the simulated noise is experienced in a concentrated manner. Therefore, it is possible to experience simulated noise with more consciousness.

  FIG. 4 is a time chart showing simulated noise output by the noise vibration control apparatus with self-diagnosis function of the second embodiment of the present invention.

  The noise vibration control apparatus of the second embodiment is configured in the same manner as the apparatus of the first embodiment except for the processing of steps S4 to S6, which is different from the apparatus of the first embodiment. That is, in the noise and vibration control apparatus of the second embodiment, after the self-diagnosis unit 2 performs self-diagnosis in step S2, the self-diagnosis unit 2 performs NG items, that is, for example, an output system failure or an input system failure In step S5, the self-diagnosis unit 2 outputs a self-diagnosis result signal indicating normality to the simulated noise output unit 3 and performs self-diagnosis. Exit mode.

  Upon receiving this normal self-diagnosis result signal, the simulated noise output unit 3, as shown in FIG. 3, simulates the simulated noise having a large sound pressure level corresponding to the case where the control circuit 4 is not operating, and the simulated noise. Is output from the actuator 6 alternately for a predetermined time (for example, 3 seconds) at the sound pressure level corresponding to the case where the noise is suppressed by the operating control circuit 4.

  On the other hand, if there is a failure, the process proceeds from step S4 to step S6. In step S6, the self-diagnosis unit 2 displays a self-diagnosis result indicating the failure content of the noise vibration control device, for example, a screen display device or a display lamp (not shown) Etc., and the self-diagnosis mode is terminated.

  When there is a failure (abnormal part), normally, since the failed part is first replaced, it is not necessary to immediately output simulated noise or simulated vibration. According to the apparatus, since the simulated noise is output only when there is no failure (abnormal place), the simulated noise can be obtained when there is a failure (abnormal place) in addition to the same effects as the first embodiment. By omitting, it is possible to shorten the work time for inspection, repair, maintenance, etc. of the noise vibration control device.

  FIG. 5 is a perspective view showing the operating state of the noise vibration control apparatus of the third embodiment of the present invention as seen from above the vehicle. In this third embodiment, the door shown in FIG. When a door opening / closing sensor (not shown) similar to the opening / closing sensor 15 is provided and the door opening / closing sensor outputs a signal indicating that all four doors 9 to 12 of the vehicle 7 are closed as shown in FIG. Only the point that the simulated noise output unit 3 outputs the simulated noise as shown in FIG. 3 is different from the first embodiment, and the other points are configured in the same manner as the apparatus of the first embodiment.

  The noise suppression effect of the noise vibration control device can be exhibited more efficiently with the door closed. According to the noise vibration control device of the third embodiment, the four doors 9 to 12 of the vehicle 7 are used. Since the simulated noise output unit 3 outputs simulated noise at the end of the self-diagnosis mode only when all are closed, in addition to being able to achieve the same operational effects as the first embodiment, the noise suppression effect is most efficient. Since the simulated noise can be heard under the same conditions as in the case where it can be demonstrated, the noise suppression effect of the noise vibration control device can be recognized more clearly.

  In addition, with regard to vibration due to noise, the vibration transfer function of the vehicle body changes when the door is open, so it is not possible to reproduce the operating vibration and non-operating vibration of the noise vibration control device well. According to the noise vibration control apparatus of the example, the vibration suppression effect of the noise vibration control apparatus can be recognized more clearly.

  FIG. 6 is a block diagram showing the configuration of the noise vibration control apparatus of the fourth embodiment of the present invention, and FIG. 7 is a time showing simulated noise output from the noise vibration control apparatus with a self-diagnosis function of the fourth embodiment. It is a chart. The noise vibration control apparatus according to the fourth embodiment outputs a switching instruction signal to the simulated noise output unit 3 based on an operation of a switch or the like performed by an operator as an operator, and the simulated noise output unit 3 outputs the switching instruction signal. It differs from the first embodiment only in that it comprises a signal switching unit 13 as a simulated noise signal switching unit that changes the output level of the simulated noise signal, and the other points are the same as in the apparatus of the first embodiment. doing.

  According to the noise vibration control device of the fourth embodiment, in addition to the same effects as the first embodiment, the simulated noise output from the simulated noise output unit 3 is transmitted from the signal switching unit 13. As shown in FIG. 7, the switching instruction signal is output to switch between simulated noise during operation of the control circuit 4 and simulated noise during non-operation, so that the operator can determine whether the control circuit 4 is in operation or not. Since the pseudo noise during operation can be switched, the operator can more intuitively recognize the noise vibration suppression effect of the noise vibration control device.

  FIG. 8 is a block diagram showing the configuration of the noise vibration control apparatus of the fifth embodiment of the present invention, and FIG. 9 is a time showing simulated noise output from the noise vibration control apparatus with a self-diagnosis function of the fifth embodiment. It is a chart. The noise vibration control apparatus of the fifth embodiment should be called a modification of the fourth embodiment, and an existing door opening / closing sensor 15 that detects the opening / closing of the door 9 on the driver's seat side is used as a simulated noise signal switching unit. The door opening / closing sensor 15 outputs a switching instruction signal to the simulated noise output unit 3 based on the opening / closing operation of the door 9 performed by, for example, an operator as an operator, and the simulated noise output by the simulated noise output unit 3 Only the point of changing the output level of the signal is different from that of the first embodiment, and the other points are the same as those of the apparatus of the first embodiment.

  According to the noise vibration control apparatus of the fifth embodiment, in addition to the same effects as the first embodiment, the simulated noise output from the simulated noise output unit 3 is output from the door opening / closing sensor 15. Since the switching instruction signal is output to switch between simulated noise during operation of the control circuit 4 and simulated noise during non-operation as shown in FIG. 9, the simulated noise signal switching unit can be configured by diverting existing parts. In addition, since the pseudo noise between the non-operating state and the operating state of the control circuit 4 can be switched by opening and closing the door 9, the operator can more intuitively recognize the noise vibration suppressing effect of the noise vibration control device. it can.

  FIG. 10 is a block diagram showing the configuration of the noise vibration control apparatus of the sixth embodiment of the present invention, and FIG. 11 is a time showing simulated noise output by the noise vibration control apparatus with a self-diagnosis function of the sixth embodiment. It is a chart. The noise vibration control apparatus according to the sixth embodiment is also a modification of the fourth embodiment. As a simulated noise signal switching unit, an existing brake that detects the depression of the brake pedal 16 and outputs a brake lamp signal is used. Using the switch 17, the brake switch 17 outputs a brake lamp signal as a switching instruction signal to the simulated noise output unit 3 based on the depression / return operation of the brake pedal 16 performed by, for example, an operator as an operator, The only difference from the first embodiment is that the output level of the simulated noise signal output by the simulated noise output unit 3 is different, and the other points are the same as those of the apparatus of the first embodiment.

  According to the noise vibration control apparatus of the sixth embodiment, in addition to the same operational effects as in the first embodiment, the simulated noise output from the simulated noise output unit 3 is applied to the brake from the brake pedal 16. As shown in FIG. 11, the control circuit 4 switches between simulated noise during operation and non-operational simulated noise depending on whether the brake lamp of the lamp signal is turned off or on. Therefore, the simulated noise signal is diverted from existing parts. Since the switching unit can be configured and the pseudo noise between the non-operating state and the operating state of the control circuit 4 can be switched by operating the brake pedal 16, the operator can more intuitively suppress the noise vibration of the noise vibration control device. The effect can be recognized.

  FIG. 12 is a block diagram showing the configuration of the noise vibration control apparatus of the seventh embodiment of the present invention, and FIG. 13 is a time showing the simulated noise output by the noise vibration control apparatus with a self-diagnosis function of the seventh embodiment. It is a chart. The noise vibration control apparatus of the seventh embodiment is also a modification of the fourth embodiment, and an existing shift lever position sensor 18 that detects a shift position of a shift lever (not shown) is used as a simulated noise signal switching unit. The shift lever position sensor 18 outputs a range signal as a switching instruction signal to the simulated noise output unit 3 based on a switching operation between the N range and the D range of the shift lever performed by, for example, an operator as an operator. The only difference from the first embodiment is that the output level of the simulated noise signal output by the simulated noise output unit 3 is different, and the other points are the same as those of the apparatus of the first embodiment. .

  According to the noise vibration control apparatus of the seventh embodiment, in addition to the same operational effects as the first embodiment, the simulated noise output from the simulated noise output unit 3 is transmitted from the shift lever position sensor 18. The output of the N-range signal and the D-range signal switches between simulated noise during operation of the control circuit 4 and simulated noise during non-operation as shown in FIG. The signal switching unit can be configured, and the pseudo noise between when the control circuit 4 is not operating and when the control circuit 4 is operated can be switched by operating the shift lever, so that the operator can more intuitively control the noise vibration of the noise vibration control device. The effect can be recognized.

  FIG. 14 is a block diagram showing the configuration of the noise vibration control apparatus of the eighth embodiment of the present invention, and FIG. 15 is a time showing simulated noise output by the noise vibration control apparatus with a self-diagnosis function of the eighth embodiment. It is a chart. The noise vibration control apparatus of the eighth embodiment is also a modification of the fourth embodiment. As the simulated noise signal switching unit, a predetermined switch 20 of the audio device 19 mounted on the vehicle is used, and the switch 20 However, the switching instruction signal is output to the simulated noise output unit 3 based on an ON / OFF operation performed by, for example, an operator as an operator, and the output level of the simulated noise signal output by the simulated noise output unit 3 is changed. However, it is different from the first embodiment, and the other points are the same as those of the apparatus of the first embodiment.

  According to the noise vibration control apparatus of the eighth embodiment, in addition to the same operational effects as the first embodiment, the simulated noise output from the simulated noise output unit 3 is turned on by the ON signal from the switch 20. As shown in FIG. 13, the simulated noise during operation of the control circuit 4 and the simulated noise during non-operation are switched as shown in FIG. In addition, since the pseudo noise between the non-operating state and the operating state of the control circuit 4 can be switched by operating a predetermined switch 20 of the audio device 19, the operator can more intuitively perform the noise vibration of the noise vibration control device. The inhibitory effect can be recognized.

  FIG. 16 is a block diagram showing the configuration of the noise vibration control apparatus according to the ninth embodiment of the present invention. The same parts as those in the previous embodiment are denoted by the same reference numerals. That is, the noise / vibration control device of the ninth embodiment also suppresses the noise and vibration of the vehicle by generating the sound and vibration having the opposite phase to the noise and vibration of the vehicle. As shown in FIG. A start instruction unit 1, a self-diagnosis unit 2 as a noise vibration control self-diagnosis unit, a simulated noise output unit 3 as a simulated noise vibration output unit, a control circuit 4 as a noise vibration control unit, and a changeover switch 5 It has.

  Furthermore, the noise vibration control device of the ninth embodiment includes an engine rotation sensor 21 that detects the rotation of the engine of the vehicle, an engine load sensor 22 that detects an engine load from the throttle opening of the intake system of the engine, A speaker 8 for outputting simulated noise, another switch 24, and an active engine mount 25 as an actuator are provided.

  The control circuit 4 is configured by, for example, a normal microcomputer, and the control circuit 4 stores a map stored in advance based on the engine rotation and engine load of the vehicle input from the engine rotation sensor 21 and the engine load sensor 22. The value of (MAP) is read out, a canceling signal is generated based on the value of the map and the engine rotation, the canceling signal is given to the active engine mount 25, and the engine support portion of the active engine mount 25 is used as the engine vibration. Noise and vibration of the vehicle are suppressed by causing vertical vibrations in the opposite phase. The active engine mount 25 defines, for example, two liquid chambers arranged vertically and connected to each other by an orifice in a cylindrical elastic body having an engine support portion at the upper end portion, and encloses the working fluid in those liquid chambers. At the same time, an electromagnet-driven diaphragm can be arranged in one of the liquid chambers, and the engine support can be moved up and down by causing the hydraulic fluid to flow between the two liquid chambers by movement of the diaphragm.

  The self-diagnosis start instructing unit 1 is composed of, for example, a normal switch, and when the switch is operated by, for example, an operator as an operator, the self-diagnosis start instructing signal is transmitted to the self-diagnosis unit 2, the simulated noise output unit 3 and the switch 5. And the switch 24. The switch 5 separates the self-diagnosis unit 2 and the simulated noise output unit 3 from the speaker 8 in the normal mode in which the self-diagnosis start instruction signal is not output from the self-diagnosis start instruction unit 1, but the self-diagnosis start instruction unit 1 After the self-diagnosis start instruction signal is output once, the self-diagnosis mode is entered, and the self-diagnosis unit 2 and the simulated noise output unit 3 are connected to the speaker 8. On the other hand, the switch 24 connects the control circuit 4 to the active engine mount 25 in the normal mode in which the self-diagnosis start instruction signal is not output from the self-diagnosis start instruction unit 1. After the diagnosis start instruction signal is output once, the self-diagnosis mode is entered and the control circuit 4 is disconnected from the active engine mount 25.

  The simulated noise output unit 3 is configured by a normal oscillation circuit. The simulated noise output unit 3 is, for example, easy to hear for the operator, a predetermined frequency between high frequency and low frequency, and low for the operator to hardly hear. A simulated noise signal such as a signal obtained by mixing a sinusoidal signal with a predetermined frequency is generated and sent to the speaker 8 to be output as simulated noise from the speaker 8, and the output level of the simulated noise signal is controlled by the control circuit 4. Is changed to an output level that is a large level of simulated noise corresponding to a case where the engine is not operating, and an output level that is a level of simulated noise corresponding to the case where the simulated noise is suppressed by the operating control circuit 4.

  The self-diagnosis unit 2 is constituted by, for example, a normal microcomputer, and the self-diagnosis unit 2 enters a self-diagnosis mode and performs self-diagnosis when receiving a self-diagnosis start instruction signal, as in the previous embodiment. In the self-diagnosis, for example, the simulated noise output unit 3 outputs the simulated noise from the speaker 8 and detects the simulated noise with the microphone. If the speaker 8 is not operating normally, the output system If the failure and the signal detected by the microphone do not correspond to the simulated noise signal, a diagnosis is made such as an input system failure.

  When the self-diagnosis unit 2 diagnoses a failure as described above, the self-diagnosis unit 2 outputs a self-diagnosis result signal indicating the failure of the noise vibration control device to the simulated noise output unit 3, and displays the details of the failure on a screen (not shown), for example. The self-diagnosis mode is terminated by outputting the display using a display device or a display lamp. If both the output system and the input system are determined to be normal, the self-diagnosis unit 2 outputs a self-diagnosis result signal indicating normality to the simulated noise output unit 3, and the self-diagnosis result indicating normality is displayed on the screen display device or The self-diagnosis mode is terminated by outputting the display with a display lamp or the like.

  When the self-diagnosis unit 2 outputs a self-diagnosis result signal indicating failure or normality, the simulated noise output unit 3 outputs a simulated noise signal and changes its output level so that the control circuit 4 is not operating. The corresponding simulated noise with a large sound pressure level and the simulated noise with the sound pressure level corresponding to the case where the simulated noise is suppressed by the operating control circuit 4 are alternately output from the speaker 8 for a predetermined time (for example, 3 seconds). To do.

  According to the noise / vibration control device of the ninth embodiment, the simulated noise output unit 3 is accompanied by the simulated noise during operation when the control circuit 4 is operating, along with the self-diagnosis performed by the self-diagnosis unit 2. Since the non-operating simulated noise when the control circuit 4 is not operating is output from the speaker 8, the operator operates with the noise when the control circuit 4 is operating during the self-diagnosis of the device. You can feel the noise when you are not, and you can clearly recognize the effect of the noise vibration control device because you can feel the simulated sound with the consciousness concentrated.

  Moreover, even when the active engine mount 25 is used for control, the output of the active engine mount is about 10 W, and the output of the speaker 8 is about 1 W. Therefore, when the same sound pressure level is generated in the passenger compartment, It is possible to improve energy efficiency because the power consumption is less when the simulated noise is generated by the speaker 8 than when the active engine mount 25 is vibrated to generate the simulated noise in the vehicle interior.

  FIG. 17 is a perspective view showing the speaker arrangement in the noise vibration control apparatus of the tenth embodiment of the present invention as viewed from above the vehicle, and FIG. 18 is a block diagram showing the configuration of the noise vibration control apparatus of the tenth embodiment. The apparatus main body 26 of the noise vibration control apparatus of the tenth embodiment basically has the same configuration as the parts other than the actuator 6 in the first embodiment, and as a speaker 8 as an actuator, FIG. As shown, the vehicle 7 is different from the first embodiment only in that five existing speakers 8-1 to 8-5 are provided.

  In the noise vibration control apparatus of the tenth embodiment, the control circuit corresponding to the previous control circuit 4 is constituted by, for example, a normal microcomputer so as to have the filter update calculation circuit 29 and the adaptive filter 30, and this control circuit is A reference signal is generated from a reference signal based on the engine rotation of the vehicle output from the engine rotation sensor 21. On the other hand, noise vibration in the vehicle interior of the vehicle is detected by the microphone 27 to generate an error signal. Based on the reference signal and the error signal, the filter update calculation circuit 29 performs LMS (minimum mean square) algorithm calculation or the like, and the filter of the adaptive filter 30 so that the error signal from the microphone is minimized based on the calculation result. The coefficients are sequentially updated, a cancellation signal is generated through the reference signal to the adaptive filter 30, and the cancellation signal is output from the speakers 8-1 to 8-5, thereby suppressing the noise and vibration of the vehicle.

  The self-diagnosis start instructing unit 1 is composed of, for example, a normal switch, and when the switch is operated by, for example, an operator as an operator, the self-diagnosis start instructing signal is transmitted to the self-diagnosis unit 2, the simulated noise output unit 3 and the switch 5. And the switch 28. The switch 5 connects the speaker 8 (8-1 to 5-5) to the adaptive filter 30 in the normal mode in which the self-diagnosis start instruction signal is not output from the self-diagnosis start instruction unit 1, but the self-diagnosis starts. After the self-diagnosis start instruction signal is once output from the instruction unit 1, the self-diagnosis mode is entered, and the speakers 8 (8-1 to 8-5) are switched and connected to the simulated noise output unit 3. On the other hand, in the normal mode in which the self-diagnosis start instruction signal is not output from the self-diagnosis start instruction unit 1, the switch 28 connects the microphone 27 to the filter update arithmetic circuit 29. After the diagnosis start instruction signal is output once, the self-diagnosis mode is entered, and the microphone 29 is switched and connected to the self-diagnosis unit 2.

  The simulated noise output unit 3 is configured by a normal oscillation circuit. The simulated noise output unit 3 is, for example, easy to hear for the operator, a predetermined frequency between high frequency and low frequency, and low for the operator to hardly hear. A simulated noise signal such as a signal obtained by mixing sinusoidal signals with a predetermined frequency is generated and sent to the speakers 8-1 to 8-5, and the same simulated noise is obtained from all of the speakers 8-1 to 8-5. When the output level of the simulated noise signal is suppressed by the output level of the simulated noise signal corresponding to the case where the control circuit is not operating and the simulated noise is suppressed by the operating circuit. The output level is changed to a simulated noise level corresponding to.

  The self-diagnosis unit 2 is constituted by, for example, a normal microcomputer, and the self-diagnosis unit 2 enters a self-diagnosis mode and performs self-diagnosis when receiving a self-diagnosis start instruction signal, as in the previous embodiment. In the self-diagnosis, for example, the simulated noise output unit 3 outputs the simulated noise from the speakers 8-1 to 8-5 and detects the simulated noise by the microphone 27, and the speakers 8-1 to 8-5. Is not operating normally, the output system is faulty. If the signal detected by the microphone 27 does not correspond to the simulated noise signal, the input system is faulty.

  When the self-diagnosis unit 2 diagnoses a failure as described above, the self-diagnosis unit 2 outputs a self-diagnosis result signal indicating the failure of the noise vibration control device to the simulated noise output unit 3, and displays the details of the failure on a screen (not shown), for example. The self-diagnosis mode is terminated by outputting the display using a display device or a display lamp. If both the output system and the input system are determined to be normal, the self-diagnosis unit 2 outputs a self-diagnosis result signal indicating normality to the simulated noise output unit 3, and the self-diagnosis result indicating normality is displayed on the screen display device or The self-diagnosis mode is terminated by outputting the display with a display lamp or the like.

  When the self-diagnosis unit 2 outputs a self-diagnosis result signal indicating failure or normality, the simulated noise output unit 3 outputs a simulated noise signal and changes its output level so that the control circuit is not operating. The speaker 8-1 alternately simulates the corresponding simulated noise having a large sound pressure level and the simulated noise having the sound pressure level corresponding to the case where the simulated noise is suppressed by the operating control circuit. Output from ~ 8-5.

  According to the noise / vibration control device of the tenth embodiment, as in the first embodiment, when the operator performs the self-diagnosis of the device, the noise when the control circuit is operating and the noise when the control circuit is not operating. You will experience noise, and you can clearly recognize the effect of the noise vibration control device because you can experience the simulated sound with your consciousness concentrated. In addition, since the interference waves that cancel the noise are output from the speakers 8-1 to 8-5, the simulated noise after the self-diagnosis is also output from all the speakers 8-1 to 8-5 with the same sound. As a result, the simulated noise is output from the speakers in the vicinity of all seat positions, and the simulated noise can be sensed efficiently regardless of the position of the operator.

  As a modified example of the noise vibration control apparatus of the tenth embodiment, the simulated noise output unit 3 replaces the simulated noise after self-diagnosis with all the speakers 8-1 to 8-5 with the same sound. In addition, it is possible to output only from the speaker 8-1 next to the driver's seat. In this way, by outputting the simulated noise from one speaker 8-1, the output sound of each speaker, which may occur when sound is output from the speakers of all the front and rear seats, is canceled and extreme. Therefore, the simulated noise can be clearly heard by outputting the sound only from the speaker 8-1 near the driver's seat (operator position).

  As another modification of the noise vibration control apparatus of the tenth embodiment, the simulated noise output unit 3 outputs the simulated noise after self-diagnosis from all the speakers 8-1 to 8-5 with the same sound. Instead, the same sound can be output from only the two speakers 8-1 and 8-2 on the left and right sides of the front seat. In this way, by outputting the simulated noise from one speaker 8-1, the output sound of each speaker, which may occur when sound is output from the speakers of all the front and rear seats, is canceled and extreme. There is no place where the sound is reduced, and in both the right-hand drive car and the left-hand drive car, the sound is clearly output by outputting the sound from the speakers 8-1 and 8-2 in the vicinity of the driver's seat (operator position). I can hear you.

  Furthermore, as another modification of the noise vibration control apparatus of the tenth embodiment, the simulated noise output unit 3 outputs the simulated noise after self-diagnosis from all the speakers 8-1 to 8-5 with the same sound. Instead of this, it is also possible to output from only one bass speaker 8-5 at the center in the vehicle width direction behind the rear seat. In this way, by outputting the simulated noise from only one speaker 8-5, the output sound of each speaker that may occur when sound is output from all speakers in the front and rear seats is canceled. There is no place where the sound is extremely reduced, and the simulated noise can be heard from the speaker at each seat efficiently. This low-frequency speaker is a speaker that outputs low-frequency sound, and the low-frequency speaker is selected as one speaker that outputs simulated noise. This is because it is a noise that workers should particularly recognize for diagnosis.

  FIG. 19 is a perspective view showing the arrangement of the main body of the noise vibration control apparatus according to the eleventh embodiment of the present invention and the actuator viewed from the side of the vehicle, and FIG. 20 shows the noise vibration control apparatus according to the eleventh embodiment. FIG. 14 is a block diagram showing the configuration, and the main body 31 of the noise vibration control apparatus of the eleventh embodiment basically has the same configuration as that of the ninth embodiment shown in FIG. The difference from the ninth embodiment is that an existing active engine mount 25 provided in the vehicle 7 is used instead of using the switch 5 and the speaker 8.

  According to the noise vibration control apparatus of the eleventh embodiment, the same effects as those of the ninth embodiment can be obtained, and the apparatus can be simply configured by omitting the switch 5 and the speaker 8.

  FIG. 21 is a perspective view showing the arrangement of the main body of the noise vibration control apparatus and actuators of the twelfth embodiment of the present invention as seen from the side of the vehicle, and FIG. 22 shows the noise vibration control apparatus of the twelfth embodiment. FIG. 11 is a block diagram showing the configuration, and the apparatus main body 31 of the noise vibration control apparatus of the twelfth embodiment basically has the same configuration as the apparatus main body 26 of the tenth embodiment, and instead of the engine rotation sensor 21. In the tenth embodiment, only an accelerometer (acceleration sensor) 33 is used and a piezo element 34 is attached to, for example, a floor panel of the vehicle 7 instead of using the speaker 8, while a microphone 27 is disposed on, for example, a ceiling portion of the vehicle 7. Is different.

  According to the noise vibration control apparatus of the twelfth embodiment, in addition to obtaining the same operational effects as those of the tenth embodiment, the simulated noise output unit 3 corresponds to when the control circuit is in operation and not in operation. Since the simulated noise signal is output to the piezo element 34 to generate the simulated noise on the floor panel of the vehicle 7, the simulated noise can be heard efficiently at each seat.

  FIG. 23 is a block diagram showing the configuration of the noise vibration control apparatus of the thirteenth embodiment of the present invention. The noise vibration control apparatus according to the thirteenth embodiment is based on the operation of the volume level adjusting element 35 such as a variable resistor with a knob that is rotated by an operator as an operator. 3 is different from the first embodiment only in that the volume level adjusting circuit 36 such as an amplifier circuit interposed between the switch 3 and the switch 5 changes the output level of the simulated noise signal, and other points are different from the first embodiment. The configuration is the same as the example device.

  According to the noise vibration control apparatus of the thirteenth embodiment, in addition to the same effects as the first embodiment, the surrounding noise is noisy, and the operator cannot recognize the simulated noise at a predetermined level. Further, by operating the volume level adjusting element 35 to amplify the output level of the simulated noise signal output from the simulated noise output unit 3 to an arbitrary level, the noise vibration suppression effect of the noise vibration control device can be further clarified. Can be recognized.

  FIG. 24 is a block diagram showing the configuration of the noise vibration control apparatus of the fourteenth embodiment of the present invention. The noise vibration control apparatus according to the fourteenth embodiment is a specific example of the thirteenth embodiment. As the volume level adjusting element 35 and the volume level adjusting circuit 36, the noise vibration control apparatus of the existing audio equipment 37 mounted on the vehicle is used. For this purpose, the volume level adjustment circuit 36 is switched and connected to the audio signal source 38 and the switch 5 of the apparatus body 31 by the switch 39 and the audio signal is canceled between the volume level adjustment circuit 36 and the speaker 8. Only the point that the adder 40 for adding is interposed is different from the first embodiment, and the other points are configured in the same manner as the apparatus of the first embodiment.

  According to the noise vibration control apparatus of the fourteenth embodiment, in addition to the same effects as the first embodiment, the surrounding noise is noisy and the simulated noise is not recognized by the operator at a predetermined level. Furthermore, by amplifying the output level of the simulated noise signal output from the simulated noise output unit 3 to an arbitrary level, the noise vibration suppression effect of the noise vibration control device can be recognized more clearly. Moreover, existing audio equipment can be used.

  While the present invention has been described based on the illustrated examples, the present invention is not limited to the above-described examples, and can be appropriately changed within the scope of the claims. For example, the noise vibration control of the first embodiment By adding the configuration of the noise vibration control device of the twelfth embodiment to the configuration of the device, it is possible to further suppress not only audible noise and vibration but also low frequency vibrations than the audible range. As the simulated noise vibration output section, it is possible to provide a simulated vibration output section that outputs only the simulated vibration whose output level changes from the actuator in the same manner as the simulated noise. In this way, vibrations at a lower frequency than the audible range can be provided. As for, the worker can recognize the effect of the noise vibration control device.

  Thus, according to the noise vibration control apparatus with a self-diagnosis function of the present invention, the simulated noise vibration output unit is in operation when the noise vibration control unit is in operation in conjunction with the self-diagnosis performed by the noise vibration control self-diagnosis unit. Since the simulated noise and / or simulated vibration during operation and the non-operating simulated noise and / or the non-operated simulated vibration when the noise vibration control unit is not operating are output, the operator can At the time of diagnosis, you will experience the noise vibration when the noise vibration control unit is operating and the noise vibration when it is not operating, so that you can experience simulated noise and / or simulated vibration with a focus on consciousness. The effect of the noise vibration control device can be clearly recognized. In addition, since the operator can experience the noise vibration itself when the noise vibration control unit is in operation or not, the effect of the noise vibration control device can be stored, so that it is not during self-diagnosis. This makes it possible to recognize the effect of the noise and vibration control device even during traveling.

It is a block diagram which shows the structure of the noise vibration control apparatus with a self-diagnosis function of 1st Example of this invention. It is a flowchart which shows the process which the noise vibration control apparatus with a self-diagnosis function of the said 1st Example performs. It is a time chart which shows the simulation noise which the noise vibration control apparatus with a self-diagnosis function of the said 1st Example outputs. It is a time chart which shows the simulation noise which the noise vibration control apparatus with a self-diagnosis function of 2nd Example of this invention outputs. It is a perspective view which shows the operating state of the noise vibration control apparatus of 3rd Example of this invention seeing from a vehicle upper direction. It is a block diagram which shows the structure of the noise vibration control apparatus of 4th Example of this invention. It is a time chart which shows the simulation noise which the noise vibration control apparatus with a self-diagnosis function of the said 4th Example outputs. It is a block diagram which shows the structure of the noise vibration control apparatus of 5th Example of this invention. It is a time chart which shows the simulation noise which the noise vibration control apparatus with a self-diagnosis function of the said 5th Example outputs. It is a block diagram which shows the structure of the noise vibration control apparatus of 6th Example of this invention. It is a time chart which shows the simulation noise which the noise vibration control apparatus with a self-diagnosis function of the said 6th Example outputs. It is a block diagram which shows the structure of the noise vibration control apparatus of 7th Example of this invention. It is a time chart which shows the simulation noise which the noise vibration control apparatus with a self-diagnosis function of the said 7th Example outputs. It is a block diagram which shows the structure of the noise vibration control apparatus of 8th Example of this invention. It is a time chart which shows the simulated noise which the noise vibration control apparatus with a self-diagnosis function of the said 8th Example outputs. It is a block diagram which shows the structure of the noise vibration control apparatus of 9th Example of this invention. It is a perspective view which shows speaker arrangement | positioning in the noise vibration control apparatus of 10th Example of this invention seeing from a vehicle upper direction. It is a block diagram which shows the structure of the noise vibration control apparatus of the said 10th Example. It is a perspective view which shows arrangement | positioning of the apparatus main body of the noise vibration control apparatus of 11th Example of this invention, and its actuator from the vehicle side. It is a block diagram which shows the structure of the noise vibration control apparatus of the said 11th Example. It is a perspective view which shows arrangement | positioning of the apparatus main body of the noise vibration control apparatus of 12th Example of this invention, and its actuator from the vehicle side. It is a block diagram which shows the structure of the noise vibration control apparatus of the said 12th Example. It is a block diagram which shows the structure of the noise vibration control apparatus of 13th Example of this invention. It is a block diagram which shows the structure of the noise vibration control apparatus of 14th Example of this invention.

Explanation of symbols

1 Self-diagnosis start instruction part 2 Self-diagnosis part (noise vibration control self-diagnosis part)
3 Simulated noise output section (simulated noise vibration output section)
4 Control circuit (noise vibration control unit)
5 Switch 6 Actuator 7 Vehicle 8, 8-1, 8-2, 8-3, 8-4 Speaker (actuator)
8-5 Loudspeaker (Actuator)
9 Front seat right (driver's seat side) door 10 Front seat left (passenger seat side) door 11 Rear seat right door 12 Rear seat left door 13 Signal switching unit (simulated noise vibration switching unit)
15 Door open / close sensor (simulated noise vibration switching unit, door closing detection unit)
16 Brake pedal 17 Brake switch (simulated noise vibration switching part, brake pedal operation detection part)
18 Shift lever position sensor (simulated noise vibration switching unit, shift lever operation detection unit)
19 Audio equipment 20 Switch (simulated noise vibration switching part, audio switch operation detection part)
DESCRIPTION OF SYMBOLS 21 Engine rotation sensor 22 Engine load sensor 24 Switch 25 Active engine mount 26 Apparatus main body 27 Microphone 28 Switch 29 Filter update arithmetic circuit 30 Adaptive filter 31 Apparatus main body 32 Switch 33 Accelerometer (acceleration sensor)
34 Piezo element (vibrator)
35 Volume level adjustment element (sound pressure level indicator, volume adjustment element)
36 Volume level adjustment circuit 37 Audio equipment 38 Audio signal source 39 Switch 40 Adder 41 Switch

Claims (18)

A noise / vibration control unit for generating a cancellation signal having an opposite phase to the noise and / or vibration of the vehicle;
An actuator that outputs sound and / or vibration corresponding to the cancellation signal;
A self-diagnosis start instruction unit that outputs a self-diagnosis start instruction signal based on an operation performed by the operator;
When receiving the self-diagnosis start instruction signal from the self-diagnosis start instruction unit, a noise vibration control self-diagnosis unit that diagnoses the presence or absence of abnormality of the noise vibration control unit and outputs a diagnosis result signal indicating the result;
Along with the self-diagnosis performed by the noise vibration control self-diagnosis unit, the simulated noise during operation and / or the simulated vibration during operation when the noise vibration control unit is operating, and the noise vibration control unit is not operating A non-operating simulated noise and / or a non-operating simulated vibration for outputting a simulated noise vibration output unit,
A noise and vibration control device with a self-diagnosis function.   The simulated noise vibration output unit, when the diagnosis result signal output by the noise vibration control self-diagnosis unit indicates no abnormality, the operating simulated noise and / or operating simulated vibration, and the non-operating simulated noise and The noise vibration control device with a self-diagnosis function according to claim 1, which outputs simulated vibration during non-operation.   The simulated noise vibration output unit alternately outputs the simulated noise during operation and / or the simulated vibration during operation and the simulated noise during non-operation and / or the simulated vibration during non-operation. Noise vibration control device with self-diagnosis function. A door closing detector for detecting a closed state of the vehicle door and outputting a door closing signal;
When the simulated noise / vibration output unit receives the door closing signal, the simulated noise during operation and / or simulated vibration during operation, and the simulated noise during non-operation and / or simulated vibration during non-operation. The noise vibration control device with a self-diagnosis function according to any one of claims 1 to 3, which outputs the noise vibration control device. A simulated noise vibration switching unit that outputs a switching instruction signal based on an operation performed by the operator,
When the simulated noise vibration output unit receives the switching output instruction signal from the simulated noise vibration switching unit, the simulated noise during operation and / or the simulated vibration during operation and the simulated noise during non-operation and / or during non-operation The noise vibration control apparatus with a self-diagnosis function according to claim 1 or 2, wherein the noise vibration control apparatus switches and outputs simulated vibration. The simulated noise vibration switching unit is a door closing detection unit that detects a closed state of the vehicle door and outputs a door closing signal.
When the simulated noise vibration output unit receives the door closing signal from the door closing detection unit, the simulated noise during operation and / or simulated vibration during operation, and the simulated noise during non-operation and / or simulated vibration during non-operation. The noise vibration control apparatus with a self-diagnosis function according to claim 5, wherein The simulated noise vibration switching unit is a brake pedal operation detection unit that detects a state where the brake pedal of the vehicle is depressed and outputs a brake pedal operation signal,
When the simulated noise vibration output unit receives the brake pedal operation signal from the brake pedal operation detection unit, the simulated noise during operation and / or the simulated vibration during operation and the simulated noise during non-operation and / or during non-operation 6. The noise vibration control device with a self-diagnosis function according to claim 5, wherein the noise vibration control device switches and outputs simulated vibration. The simulated noise vibration switching unit is a shift lever operation detection unit that detects that the shift lever of the vehicle is operated and outputs a shift lever operation signal,
When the simulated noise vibration output unit receives the shift lever operation signal from the shift lever operation detection unit, the simulated noise during operation and / or simulated vibration during operation, and the simulated noise during non-operation and / or during non-operation 6. The noise vibration control device with a self-diagnosis function according to claim 5, wherein the noise vibration control device switches and outputs simulated vibration. The simulated noise vibration switching unit is an audio switch operation detection unit that detects that a predetermined switch of an audio device of the vehicle is operated and outputs an audio switch operation signal,
Upon receiving the audio switch operation signal from the audio switch operation detection unit, the simulated noise vibration output unit receives the simulated noise during operation and / or simulated vibration during operation, and the simulated noise during non-operation and / or during non-operation. 6. The noise vibration control device with a self-diagnosis function according to claim 5, wherein the noise vibration control device switches and outputs simulated vibration. The actuator is an active engine mount provided on the vehicle,
The simulated noise vibration output unit outputs the simulated noise during operation and / or the simulated vibration during operation and the simulated noise during non-operation and / or the simulated vibration during non-operation from a speaker. The noise vibration control device with a self-diagnosis function according to any one of the preceding claims. The vehicle includes a plurality of speakers,
The simulated noise vibration output unit outputs the simulated noise during operation and / or simulated vibration during operation and the simulated noise during non-operation and / or simulated vibration during non-operation with the same sound from all of the plurality of speakers. The noise vibration control device with a self-diagnosis function according to any one of claims 1 to 9. The vehicle includes a plurality of speakers including a driver seat lateral position, a passenger seat lateral position, and rear left and right speakers.
The simulated noise vibration output unit outputs the simulated noise during operation and / or the simulated vibration during operation and the simulated noise during non-operation and / or the simulated vibration during non-operation only from a speaker at a lateral position of the driver seat. The noise vibration control apparatus with a self-diagnosis function according to claim 11. The vehicle includes a plurality of speakers including a driver seat lateral position, a passenger seat lateral position, and rear left and right speakers.
The simulated noise vibration output unit outputs the simulated noise during operation and / or simulated vibration during operation and the simulated noise during non-operation and / or simulated vibration during non-operation in the driver's seat lateral position and the passenger's seat lateral position. The noise vibration control apparatus with a self-diagnosis function according to claim 11, wherein the same sound is output from only the sound.   The simulated noise vibration output unit outputs the operating simulated noise and / or operating simulated vibration and the non-operating simulated noise and / or non-operating simulated vibration from only one of the speakers. The noise vibration control apparatus with a self-diagnosis function of description. The actuator is an active engine mount provided on the vehicle,
The simulated noise vibration output unit applies the simulated vehicle noise during operation and / or simulated vibration during operation and the simulated noise during non-operation and / or simulated vibration during non-operation to the panel of the vehicle body by the active engine mount. The noise vibration control device with a self-diagnosis function according to any one of claims 1 to 9, wherein the noise vibration control device outputs a vibration.   The simulated noise vibration output unit includes a vibrator that vibrates the panel of the vehicle body. The simulated noise during operation and / or the simulated vibration during operation and the simulated noise during non-operation and / or the simulated vibration during non-operation. 10. The noise vibration control apparatus with a self-diagnosis function according to claim 1, wherein the vibration is applied to the panel of the vehicle body by the vibrator. The vehicle includes a sound pressure level instruction unit that outputs a sound pressure level instruction signal based on an operation performed by an operator,
The simulated noise vibration output unit outputs the simulated noise during operation and / or the simulated vibration during operation and the simulated noise during non-operation and / or the simulated vibration during non-operation as a sound pressure level based on the sound pressure level instruction signal. The noise vibration control device with a self-diagnosis function according to any one of claims 1 to 9, wherein   18. The noise vibration control device with a self-diagnosis function according to claim 17, wherein the sound pressure level instruction unit is a volume control element of an audio device of the vehicle.

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