JP2006303975A - Motor/receiver relation controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent electric noise generated as an electric motor operates from causing a radio receiver to generate noise under relation control over the electric motor and radio receiver mounted on a vehicle. <P>SOLUTION: When the electric noise generated as the pump motor 64 driving a pressure accumulating pump accumulating pressure in an accumulator in a hydraulic brake system operates causes the radio receiver 154 to generate noise with high possibility, a motor/radio relation control section 150 varies the rotational frequency of the pump motor 64. Consequently, a reception frequency of the radio receiver 154 and a peak value of a frequency distribution of the noise deviate from each other to avoid the generation of the noise. If a satisfactory result is not obtained, an electronic variable resistor 161 of a radio control section 156 is turned down or a power switch 162 is turned off to reduce the noise of the radio receiver 154. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a motor / receiver related control device that controls at least the other in accordance with the state of at least one of an electric motor and a radio receiver mounted on a vehicle.

In many cases, an electric motor and a radio receiver such as a radio receiver or a television receiver are mounted on the vehicle. In this case, if the electric motor is operated during reception by the wireless receiver, the electric noise of the electric motor may be mixed into the reception signal of the wireless receiver and cause noise in the wireless receiver. Therefore, in the following Patent Document 1, in the hydraulic brake system, when the operation of the electric motor that drives the hydraulic pump becomes unnecessary, the rotation is quickly stopped by the electric braking device, and the radio receiver It is described to reduce noise.
Patent Document 2 describes that the sound output of the radio receiver is switched to the sound output of another music source in order to prevent unpleasant noise from being output from the radio receiver. When the navigation system detects that the vehicle is approaching the transmission antenna of another FM broadcast station while the in-vehicle FM radio receiver is receiving radio waves from one FM broadcast station, the switching control of the passband filter is performed. It is described that the radio wave of the FM broadcast station being received is not adjacently disturbed by the radio wave of another FM broadcast station.
JP-A-7-222472 Japanese Patent Laid-Open No. 5-344015 JP 2001-57524 A

  In view of the above circumstances, an object of the present invention is to avoid the occurrence of noise in a wireless receiver by related control between the in-vehicle electric motor and the in-vehicle wireless receiver.

  Then, the above-mentioned problems include a motor / receiver related control device, (a) a motor control unit that changes the control of the electric motor according to the operating state of the wireless receiver, and (b) the operating state of the electric motor. This is solved by including at least one of the receiver control unit that changes the control of the wireless receiver according to the above.

  In this way, if at least one of changing the control of the electric motor according to the operating state of the wireless receiver and changing the control of the wireless receiver according to the operating state of the electric motor is performed, the electric motor It is possible to satisfactorily avoid the occurrence of noise in the wireless receiver with the operation of.

Aspects of the Invention

  In the following, the invention that is claimed to be claimable in the present application (hereinafter referred to as “claimable invention”. The claimable invention is at least the “present invention” to the invention described in the claims. Some aspects of the present invention, including subordinate concept inventions of the present invention, superordinate concepts of the present invention, or inventions of different concepts) will be illustrated and described. As with the claims, each aspect is divided into sections, each section is numbered, and is described in a form that cites the numbers of other sections as necessary. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combinations of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiments, etc., and as long as the interpretation is followed, another aspect is added to the form of each section. In addition, an aspect in which constituent elements are deleted from the aspect of each item can be an aspect of the claimable invention.

  In each of the following items, the item (1) corresponds to claim 1, the item (2) corresponds to claim 2, and the combination of items (5) and (6) corresponds to claim 3. To do. The combination of the (10) and (11) terms corresponds to claim 4, the (12) term in claim 5, the (13) term in claim 6, and the (14) term in claim. In claim 7, item (20) corresponds to claim 8, item (23) corresponds to claim 9, and item (26) corresponds to claim 10.

(1) A motor / receiver related control device that controls at least the other according to the state of at least one of an electric motor and a radio receiver mounted on a vehicle,
(a) a motor control unit that changes the control of the electric motor according to the operating state of the radio receiver; and (b) a receiver control that changes the control of the radio receiver according to the operating state of the electric motor. A motor / receiver-related control device comprising at least one of a first unit and a second unit.
As described later, the electric motor is typically a pump motor that drives a hydraulic pump, but is not limited thereto. Many electric motors are mounted on vehicles for various purposes. The claimed invention can be applied not only to an electric motor as a drive source of an electric brake but also to an electric motor as a drive source of a system other than a brake system.
The motor control unit is provided with a rotation speed control unit as described in the next section. By changing the rotation speed of the electric motor, the peak value of the frequency distribution of electric noise generated by the operation of the electric motor (second order or higher) And the reception frequency of the wireless receiver, that is, the peak value of the frequency characteristic of the reception unit, and the noise is less likely to be amplified together with the received signal. It is particularly effective to avoid the occurrence of noise due to driving. However, the present invention is not limited to this. Depending on the purpose of the electric motor operation, the start of the operation of the electric motor may be delayed until noise hardly occurs in the wireless receiver, or noise may be generated in the wireless receiver during operation of the electric motor. It is also possible to include an operation timing control unit that controls the operation timing, such as stopping the operation of the electric motor when the occurrence of this occurs. An example is the embodiment described in the following item (8) or (9).

[Motor controller]
(2) The motor control unit includes the motor control unit, and the motor control unit includes a rotation speed control unit that changes the rotation speed of the electric motor according to at least the reception frequency of the wireless receiver. Motor / receiver related control device.
In the wireless receiver, the peak value (reception frequency) of the frequency characteristic of the tuning unit including the antenna unit and the tuner unit is matched with the peak value of the frequency distribution of the signal (received radio wave) to be received. The peak value of the frequency distribution of the reception frequency and electrical noise (abbreviated as electric motor noise as necessary) generated with the rotation of the electric motor (abbreviated as noise peak value as necessary). Is close to the electric signal, the electric noise is greatly amplified together with the received signal, and a large noise is generated in the radio receiver. On the other hand, since the frequency distribution of the noise of the electric motor changes with the rotation speed of the electric motor, when the peak value of the noise of the electric motor is close to the reception frequency, the rotation speed of the electric motor is changed by changing the rotation speed of the electric motor. The noise peak value is kept away from the reception frequency to reduce the noise of the radio receiver.
(3) The motor control unit includes a rotation speed corresponding operation time changing unit that changes a continuous operation time of the electric motor in response to the rotation speed control unit changing the rotation speed of the electric motor (2 The motor / receiver related control device described in the item).
For example, when it is desirable that the cumulative rotational speed from the start of operation of the electric motor to the stop of operation is substantially constant, the rotational speed corresponding operation time changing unit is shortened when the rotational speed is increased, In the case of reducing the rotational speed, the cumulative rotational speed change suppressing portion that extends the continuous operation time is provided.
(4) The rotation speed control unit changes the rotation speed of the electric motor according to the electric field strength of the radio wave received by the wireless receiver in addition to the reception frequency. Motor / receiver related control device.
When the electric field strength of the received radio wave is weak, the volume of the radio receiver is increased, so that noise is likely to increase. Therefore, if the rotation speed of the electric motor is changed when the electric field strength of the received radio wave is weak, the rotation speed of the electric motor can be changed only when it is really necessary, which is useless. Implementation of changes can be avoided.
(5) The motor according to any one of (1) to (4), wherein the rotation speed control unit includes a bidirectional changer that changes the rotation speed of the electric motor in both a direction for increasing and a direction for decreasing. -Receiver related control device.
If the rotational speed control unit has a bidirectional changer, the degree of freedom in rotational speed control is increased, and noise generation can be avoided correspondingly.
(6) The rotation speed control unit includes a step change unit that selectively changes the rotation number of the electric motor to any one of three or more predetermined steps, and the bidirectional change unit includes the step If it is possible to change the speed of the electric motor to a step that increases or decreases, the number of rotations corresponding to the reception frequency is changed to a step that is further away. The motor / receiver related control device described.
The rotation speed of the electric motor can be changed continuously. However, it may be possible to change in stages, in which case the cost of the apparatus can be reduced. If the number of rotations can be changed to three stages of high speed, medium speed, and low speed, both changeable parts are effective only when the set rotation speed at that time is medium speed. If it can be changed, the degree of freedom of change is increased, and noise generation of the radio receiver can be easily avoided. If there is a possibility that multiple stages can be changed on at least one side of the set rotational speed at that time, it is possible to change only to the nearest stage or to change to other stages. You can also. An example in which the noise level is changed to the closest level within a range where the noise level is equal to or lower than the set level is an example of the latter.
(7) The rotation speed control unit changes a rotation speed of the electric motor only in one direction, and a selection unit that selectively selects the one-way change unit and the bidirectional change unit. The motor / receiver-related control device according to (5) or (6).
The one-direction changing unit may be a rotation number increasing unit that changes only in a direction that increases the rotation number of the electric motor, or may be a rotation number decreasing unit that changes only in a direction that decreases the rotation number. It may be selected according to the operation purpose of the electric motor.
(8) An operation timing control that includes the motor control unit, and the motor control unit further controls an operation timing such as an operation start timing and an operation end timing of the electric motor in accordance with at least a reception frequency of the wireless receiver. The motor / receiver-related control device according to any one of (1) to (7), further comprising a section.
For example, when the operation start of the electric motor becomes necessary at a position where the electric field strength is small, the one that delays the operation start is an example of the operation start control unit of this section. In addition to a mode in which the operation start time of the motor is directly determined, there is also a mode in which the rotation speed of the electric motor is determined according to the reception frequency and the operation start time is determined according to the rotation speed, as will be described later. It is included in the operation start control section of this section. This aspect is particularly effective when the electric field strength is weak in a local region such as the shadow of a building.
(9) including the motor control unit, and the motor control unit includes a motion state-based control unit that controls at least one of the rotational speed and the operation timing of the electric motor according to the motion state of the vehicle (1 The motor / receiver related control device according to any one of items) to (8).
(10) The motor / receiver related control according to any one of (1) to (9), wherein the electric motor includes a pump motor that drives a hydraulic pump included in a power hydraulic pressure source of a hydraulic brake system. apparatus.
The brake system may be provided with other hydraulic pumps such as a hydraulic pump that recirculates brake fluid discharged from the wheel cylinder to the decompression reservoir during anti-lock control, etc. The present invention can also be applied to a pump motor to be driven. However, a typical hydraulic pump is a hydraulic pump of a power hydraulic pressure source.
(11) The motor / receiver related control device according to item (10), wherein the power hydraulic pressure source includes an accumulator for accumulating brake fluid under pressure, and the hydraulic pump is a stock pressure pump for stocking pressure on the accumulator. .
The stock pressure pump does not operate so frequently, and since there is a certain degree of freedom in the operating conditions, the speed has been conventionally changed to multiple stages, and the pump motor that drives the stock pressure pump Is particularly suitable for the practice of the present invention.
(12) including the motor control unit, and the motor control unit includes a rotation speed control unit that controls the rotation speed of the pump motor according to at least the reception frequency of the wireless receiver, and the rotation speed control unit includes: A bidirectional changing unit that changes both the direction of increasing and decreasing the rotational speed, a unidirectional changing unit that changes only to one of the increasing direction and the decreasing direction, and the bidirectional changing unit and the unidirectional changing The motor / receiver-related control device according to (11), further including a selection unit that selects a unit.
If the rotation speed control section has a bidirectional change section, a unidirectional change section, and a selection section, the degree of freedom of rotation speed control increases, and both the pump motor control and the avoidance of noise generation in the radio receiver are improved. It becomes easy to implement.
(13) The one-way changing unit includes a rotation number increasing unit that changes only in a direction in which the rotation number of the pump motor is increased, and the selection unit is configured such that the vehicle running state is a brake of the hydraulic brake system. When the driving state is highly likely to increase the frequency of pressure increase / decrease of the hydraulic pressure, the rotation number increase unit is selected, and in other cases, the pressure increase / decrease frequency corresponding selection unit for selecting the bidirectional change unit is included ( The motor / receiver related control device according to item 12).
In the above “running state where the brake fluid pressure increase / decrease frequency is likely to be high”, the anti-lock control unit that prevents the wheels from slipping excessively during braking is activated, and the driving wheel is During the operation of the traction control unit that prevents the slip from being excessive, during the operation of the steering stability control unit that controls the traveling direction of the vehicle in a direction that accurately corresponds to the steering of the driver, This corresponds to the case where the number of actuations of the vehicle is traveling on a downhill that is greater than the set number of times and greater than the set gradient.
Normally, the bi-directional change unit is selected, and if the brake fluid pressure increase / decrease frequency is high, the rotation speed increase unit is selected, so that it is possible to reduce the amount of brake fluid accumulated in the accumulator. While avoiding, noise generation in the radio receiver can be favorably avoided.
(14) The motor control unit includes an operation start timing changing unit that changes the operation start timing in such a direction that a difference in operation time of the pump motor is reduced when the rotation speed of the pump motor is large and small ( The motor / receiver-related control device according to item 12) or (13).
The operation start time changing unit delays the operation start time when the rotation speed is large, and advances the operation start time when the rotation speed is small. That is, the animal pressure pump is started when the accumulator pressure reaches the lower threshold value, and is stopped when the accumulator pressure reaches the upper threshold value. In comparison, the lower threshold value is lowered.

[Receiver control unit]
(20) Volume reduction for reducing the volume of the radio receiver when the receiver control section includes a setting condition that includes at least that the electric motor is operating. Motor / receiver-related control device with a unit.
If the volume of the wireless receiver is reduced, noise as noise is also reduced, and it is possible to avoid discomforting the passenger. The volume reduction part includes a volume reduction part and a power-off part. When the power is turned off, no sound can be emitted from the wireless receiver, and this silent state is considered to be the limit of volume reduction. It is desirable that the sound volume lowering unit immediately lowers the sound volume when noise increases during the operation of the electric motor.
(21) The motor / receiver-related control device according to (20), wherein the volume reduction unit includes a volume reduction unit that reduces the volume of the wireless receiver.
(22) The motor / receiver-related control device according to (20) or (21), wherein the volume reduction unit includes a power-off unit that turns off the power of the wireless receiver.
(23) The setting condition includes a condition that, in addition to the electric motor being in operation, the control of the electric motor by the motor control unit is insufficient in suppressing noise generation of the wireless receiver. The motor / receiver related control device according to any one of (20) to (22).
It is possible to always reduce the volume of the wireless receiver during operation of the electric motor, so that noise can be reliably prevented. However, since the sound volume is reduced until it is unnecessary, the sound volume may be reduced only when noise generation suppression is insufficient depending on the control of the electric motor by the motor control unit. desirable.
(24) The receiver control unit includes a noise generation detection unit that detects noise generation at a level equal to or higher than a set level in the wireless receiver, and the setting condition is that the electric motor is operating, The motor / receiver-related control device according to any one of (20) to (23), including a condition that noise generation is detected by a noise generation detection unit.
(25) The setting condition includes a condition that the radio receiver is being tuned in addition to the electric motor being operated. Motor / receiver related control equipment.
When the tuner is manually tuned, the tuning destination is unknown, so the feature of this section is particularly effective.
(26) The setting condition includes a condition that, in addition to the operation of the electric motor, a reception frequency at a tuning destination of the wireless receiver and a rotation speed of the electric motor correspond to each other. The motor / receiver related control device according to any one of (20) to (24).
“The reception frequency at the tuning destination of the wireless receiver and the rotation speed of the electric motor correspond to each other” means that the peak value of the frequency distribution of noise generated due to the rotation of the electric motor, the reception frequency at the tuning destination, and For example, one is within the set frequency range with the other reception frequency or the peak value of the frequency distribution as the median value. The feature of this section is effective when the tuning destination is known before or during tuning, such as when a preset broadcasting station is selected.
(27) The setting condition includes a condition that a pre-registered broadcasting station is selected in addition to the fact that the electric motor is operating. The motor / receiver related control device described in 1.
In the past, it is convenient to automatically register a broadcast station in which noise of a set level or more has occurred in the radio receiver more than a set number of times in the navigation system or database.

[Others]
(30) A first storage unit that stores information on at least one of a peak value of a frequency distribution of noise corresponding to the number of rotations of the electric motor and a frequency at which the vehicle easily resonates, and information on the first storage unit The motor / receiver-related control device according to any one of (1) to (27), further including a first information using unit used for controlling at least one of a motor control unit and the receiver control unit.
“Frequency that easily resonates in a vehicle” means the frequency of electric noise of an electric motor that is likely to be mixed into a reception signal of a wireless receiver due to electrical resonance (for example, frequency distribution). The peak value).
(31) An electric field strength measuring unit for measuring electric field strength in a frequency band tuned by the wireless receiver (a constant frequency range in which the peak value of the frequency characteristic of the tuning unit is a median value), and the electric field strength measuring unit A second storage unit that stores the electric field strength measured in accordance with the frequency band and the measurement position, and controls the information in the second storage unit for at least one of the motor control unit and the receiver control unit. The motor / receiver related control device according to any one of items (1) to (27) and (30), including a second information utilization unit to be utilized.
At least one of the second storage unit and the second information use unit may be used as the corresponding one of the first storage unit and the first information use unit.
(32) Any one of the items (1) to (27), (30), (31) including a noise generation detecting unit for detecting that the wireless receiver is generating noise exceeding a set level. The motor / receiver related control device described in 1.
(33) The motor / receiver-related control device according to item (32), wherein the noise generation detection unit includes a filter use detection unit that detects a noise generation of the set level or more using a filter.
For example, a band pass filter can be used to detect “the occurrence of noise exceeding a set level”. When the difference between the peak value and the average value of the electric field intensity of the signal that has passed through the bandpass filter is less than the set difference, or when the ratio of the average value to the peak value is greater than or equal to the set ratio, noise above the set level It is assumed that it has occurred. As this filter, if a filter (often used as a digital filter) provided for noise removal in a wireless receiver is used, the purpose can be achieved at low cost.
(34) A position where noise generation of the set level or more is detected by the noise generation detection unit, and at least one of the reception frequency of the wireless receiver and the rotation speed of the electric motor are stored in association with each other. (32) or (33) including three storage units and a third information use unit that uses the information in the third storage unit to control at least one of the motor control unit and the receiver control unit. The motor / receiver related control device described.
At least one of the third storage unit and the third information use unit may be used as the corresponding one of the second storage unit and the second information use unit. The third storage unit can be provided in the database or the navigation system, but it is often convenient to provide the third storage unit in the latter. When the third storage unit is provided in the navigation system, it is desirable that the database is also provided in the navigation system.
(35) When the third information utilization unit uses the information stored in the third storage unit, when a temporary situation at that time, such as bad weather or event holding, is disadvantageous for noise generation prevention Is a motor / receiver-related control device according to item (34), which makes the control of the electric motor stricter than when it is not disadvantageous.
(36) An electric field strength detection unit, an electric field strength detection control unit that causes the electric field strength detection unit to sequentially detect the electric field strength as the vehicle moves, and a storage unit that stores the detected electric field strength in association with the detection position. And a motor / receiver-related control device including an electric field intensity map creating unit.
The electric field strength map (or the weak electric field region map) created by the electric field strength map creating unit can be used in the motor control unit and the receiver control unit. It is desirable that the electric field strength detection control unit detects the electric field strength regardless of whether or not the wireless receiver is operating and updates the electric field strength map.
(37) The motor / receiver-related control device according to any one of (1) to (27) and (30) to (36), wherein the wireless receiver includes at least a radio receiver.

  A motor / radio related control apparatus which is an embodiment of the claimable invention will be described below. This motor / radio-related control device is mounted on the same vehicle as the electronically controlled hydraulic brake system and the pump motor that drives the hydraulic pump as a component of the power hydraulic pressure source of the electronically controlled hydraulic brake system. The radio receiver is related to and controlled. First, the entire hydraulic brake system will be described with reference to FIG.

  This hydraulic brake system includes a brake pedal 12 as a braking operation member, a master cylinder 14 including two pressurizing chambers, a power hydraulic pressure source 16 operated by power, hydraulic brakes 22 to 28, and the like. The master cylinder 14 includes two pressure pistons, and hydraulic pressure is generated in the pressure chambers in front of the two pressure pistons according to the operating force of the brake pedal 12 by the driver as an occupant. Be made. The left and right front wheel wheel cylinders 36 and 38 are connected to the two pressurizing chambers of the master cylinder 14 via master passages 32 and 34, respectively. Master cylinder shut-off valves 42 and 44 are provided in the middle of the master passages 32 and 34, respectively. The master cylinder shutoff valves 42 and 44 are normally open electromagnetic on-off valves.

  Further, four wheel cylinders 36, 38, 46, 48 are connected to the power hydraulic pressure source 16 via a pump passage 52. The wheel cylinder 36 and the like are supplied with hydraulic pressure from the power hydraulic pressure source 16 while being disconnected from the master cylinder 14, and the hydraulic brakes 22 to 28 are operated. The hydraulic pressure of the wheel cylinders 22 to 28 is controlled by a hydraulic pressure control valve device 54. Thus, the left and right front and rear wheel cylinders 36, 38, 46, 48 can be operated by the hydraulic pressure of the power hydraulic pressure source 16, but the left and right front wheel cylinders 36, 38 are connected to the master cylinder 14. It can also be operated by hydraulic pressure (referred to as master pressure).

  The power hydraulic pressure source 16 includes a pump device 65 including a pump 62 and a pump motor 64 that drives the pump 62. The suction side of the pump 62 is connected to a master reservoir 68 (hereinafter abbreviated as “reservoir 68”) via a suction passage 66, and an accumulator 72 is connected to the discharge side. The hydraulic fluid in the reservoir 68 is pumped up by the pump 62, supplied to the accumulator 72, and stored in a pressurized state. The pump 62 functions as a livestock pressure pump, and the power hydraulic pressure source 16 is constituted by the pump 62, the pump motor 64, the accumulator 72, and the like. Further, the discharge side portion and the suction side portion of the pump 62 are connected by a relief passage 74 as a return passage. A relief valve 76 is provided in the relief passage 74. The relief valve 76 switches from the closed state to the open state when the hydraulic pressure (discharge pressure) on the discharge side of the pump 62, which is the high pressure side, exceeds the set pressure.

  The hydraulic control valve device 54 is provided in a pressure reducing passage 90 that directly connects the pressure increasing valves 82 to 88 that are electromagnetic control valves provided in the pump passage 52, and the wheel cylinders 36, 38, 46, 48 and the reservoir 68. And pressure reducing valves 92 to 98 which are electromagnetic control valves. The hydraulic pressures of the wheel cylinders 36, 38, 46, and 48 can be controlled independently by controlling the pressure increasing valves 82 to 88 and the pressure reducing valves 92 to 98, respectively. The pressure increasing valves 82 to 88 and the pressure reducing valves 92 and 94 are normally closed valves while no current is supplied to the coils. However, the pressure reducing valves 96 and 98 on the rear wheel side are not supplied with current to the coils. Is a normally open valve in the open state.

  A stroke simulator device 102 is connected to a portion of the master passage 32 closer to the master cylinder 14 than the master cylinder shut-off valve 42. The stroke simulator device 102 includes a stroke simulator 104 and a normally closed simulator control valve 106. By opening / closing the simulator control valve 106, the stroke simulator device 102 is switched between a communication state in which the stroke simulator 104 is communicated with the master cylinder 14 and a cutoff state in which the stroke simulator 104 is blocked. Can be switched.

  The hydraulic brakes 22 to 28 are controlled based on a command from a brake ECU (electronic control unit) 112. The brake ECU 112 mainly includes a computer, and includes an execution unit 114, a storage unit 116, an input / output unit 118, and the like. The input / output unit 118 includes a stroke sensor 122 that detects an operation stroke of the brake pedal 12, a master pressure sensor 124, a wheel cylinder pressure sensor 126, a wheel speed calculation device 128, a hydraulic pressure source hydraulic pressure sensor 130, a pressure switch 132, and the like. And the solenoids of the pressure increasing valves 82 to 88 and the pressure reducing valves 92 to 98, the solenoids of the master cylinder shutoff valves 42 and 44, the simulator control valve 106, and the like are connected via a drive circuit (not shown), and the pump A motor 64 is connected.

  In the storage unit 116 of the brake ECU 112, (a) a driver's desired braking force (based on the operation stroke of the brake pedal 12 detected by the stroke sensor 122 and the master cylinder pressure detected by the master pressure sensor 124). Normal hydraulic pressure control routine for calculating wheel cylinder pressure so that the braking force or braking effect can be obtained by calculating a desired braking effect (corresponding to wheel cylinder pressure) or desired braking effect (corresponding to vehicle deceleration), (b) Anti-lock control routine to prevent excessive wheel slip during braking, (c) Traction control routine to prevent excessive drive wheel slip during driving, (d) Accurate driving of vehicle The control stability control routine etc. which control to the state according to a person's steering are stored, and these control reach is execution part 1 By being executed by 4, the hydraulic pressure in the wheel cylinders 36,38,46,48 are controlled. Therefore, the brake ECU 112 functions as a normal hydraulic pressure control unit 140, an antilock control unit 142, a traction control unit 144, a steering stability control unit 146, and the like, as shown in FIG.

  Further, the storage unit 116 of the brake ECU 112 stores a motor / radio related control routine represented by the flowcharts of FIGS. 4 and 5. It also functions as a radio related control unit 150. Therefore, as shown in FIG. 2, the brake motor 112 is connected to the pump motor 64 via the motor control circuit 152, and the radio control unit 156 and the radio state detection unit 158 of the radio receiver 154, as shown in FIG. A database 159 and a navigation system 160 are connected. The radio control unit 156 includes an electronic volume 161 and a power switch 162, and the radio state detection unit 158 includes a noise detection unit 166, a power supply state detection unit 168, a volume detection unit 170, a reception frequency detection unit 172, and an electric field strength detection unit. 174.

  The pump motor 64 can be a direct current motor or an alternating current motor. In the case of a DC motor, the motor control circuit 152 includes, for example, a D / A converter that converts a digital signal from the brake ECU 112 into an analog signal and a chopper, and controls a supply current to the DC motor. can do. When an AC motor is used, the motor control circuit 152 includes, for example, a D / A converter and an inverter, and the number of rotations of the AC motor can be controlled by controlling the frequency of the supply current. . In any case, in this embodiment, it is assumed that the pump motor 64 can be operated by switching to three stages of “high speed”, “medium speed”, and “low speed”.

  The noise detection unit 166 of the radio state detection unit 158 can be configured as shown in FIG. 3, for example. An A / D converter 184 that converts an analog reception signal into a digital signal between an antenna unit 180 that selects a reception frequency of the radio receiver 154 and a tuner unit 182 (tuning unit), and a frequency of the digitized reception signal A frequency analyzer 186 for performing analysis and a D / A converter 188 for converting a digital reception signal into an analog reception signal are provided. The frequency analyzer 186 performs frequency analysis in a fixed frequency range having the reception frequency detected by the reception frequency detection unit 172 as a median value, and supplies the analysis result to the brake ECU 112.

  The wheel speed calculation unit 128 calculates a wheel speed calculation unit 192 that calculates the rotation speed of each wheel based on the output signal of each wheel speed sensor 190, and reduces the amount of change per unit time of the calculated wheel speed. A wheel deceleration calculation unit 194 that calculates the speed, a vehicle speed calculation unit 196 that calculates the traveling speed of the vehicle based on the wheel speeds of the four wheels calculated by the wheel speed calculation unit 192, and a unit time of the calculated vehicle speed And a vehicle deceleration calculation unit 198 that calculates the amount of change per vehicle as vehicle deceleration.

In the database 159, various information necessary for execution of the motor / radio related control routine, for example, the rotational speed of the pump motor 64 and the peak value of the frequency distribution of the generated noise corresponding thereto (including secondary and higher peak values) are also included. ) Information, information on the frequency at which resonance is particularly likely to occur in the vehicle, and operation is started when the pump is operated at each of “low speed”, “medium speed”, and “high speed” which are the operation speeds of the pump motor 64. Information on power accumulator pressure, information on each broadcasting station and their transmission frequency, and the like are stored.
The car navigation system 160 also stores various information necessary for executing the motor / radio related control routine. For example, past noise occurrence information (peak value of noise frequency distribution (including second and higher order peak values), frequency corresponding to the peak value, etc. associated with the position where the noise occurred, or In addition, the generated noise level, the number of rotations of the pump motor 64, the broadcasting station being received, information such as the weather) are stored, and information on the environment that is likely to cause noise in the radio receiver and transmission of each broadcasting station Information on the position of the antenna is stored.

  In this hydraulic brake system, normally, when the driver depresses the brake pedal 12, the master cylinder shut-off valves 42 and 44 are closed and the master cylinder 14 and the wheel cylinders 36 and 38 are shut off. At the same time, the stroke simulator 104 is communicated with the master cylinder 14 to give the driver a feeling of operation. On the other hand, in the hydraulic control valve device 54, the amount of operation of the brake pedal 12 by the driver (master cylinder pressure corresponding to the operation stroke and operation force) and the vehicle deceleration calculated by the vehicle deceleration calculation unit 158. Based on this, the brake ECU 112 controls the pressure-increasing valves 82 to 88 and the pressure-reducing valves 92 to 98, and the hydraulic pressure in the wheel cylinders 36, 38, 46, and 48 is increased and reduced, thereby reducing the vehicle deceleration. Is set so as to correspond to the amount of operation of the brake pedal 12. This control is normal braking control. The hydraulic pressure control of the wheel cylinders 36, 38, 46, 48 for anti-lock control, traction control, steering stability control, etc. is also performed.

  If brake fluid is supplied from the power hydraulic pressure source 16 for the normal braking control, anti-lock control, traction control, steering stability control, etc., the brake fluid in the accumulator 72 is reduced, so the pump motor 64 and the pump 52 are reduced. Is required to supply the accumulator 72 with brake fluid. However, depending on the reception state of the radio receiver 154, when the pump motor 64 is operated, noise is generated in the radio receiver 154, which may cause discomfort to the passenger. In order to prevent this, the motor / radio related control routine is executed. This program is repeatedly executed while the ignition switch of the vehicle is turned on.

  First, in step 1 (hereinafter abbreviated as S1. The same applies to other steps), it is determined whether or not a flag indicating that the pump motor 64 is operating is ON. Is turned OFF by execution of an initial setting routine (not shown), and therefore the determination result is NO. In S2, information indicating the reception state of the radio receiver 154 is read from the radio state detection unit 158, and information on whether or not the pump 62 is necessary is read in S3.

Subsequently, in S4, it is determined whether noise countermeasures are necessary. This determination can be made, for example, depending on whether the following various conditions are satisfied.
First example
(a) The power supply state detection unit 168 detects that the radio power supply is in an ON state.
(b) The electric field strength of the reception frequency detected by the electric field strength detector 174 is equal to or lower than the set strength.
(c) Peak value (including secondary and higher peak values; the same applies hereinafter) in the frequency distribution of generated noise read from the database 159 corresponding to the currently set rotation speed of the pump motor 64, and the reception frequency One of the reception frequencies detected by the detection unit 170 is within the set frequency range with the other as the median value. When the conditions of this example are satisfied, noise is likely to occur in the radio receiver, and noise countermeasures are required. It is a typical example in the case of.
Second example
(a) The power supply state detection unit 168 detects that the radio power supply is in an ON state.
(b) The electric field strength of the reception frequency detected by the electric field strength detection unit 174 is less than or equal to the set strength. When the electric field strength of the reception frequency is less than or equal to the set strength, noise is likely to occur in the radio receiver.
Third example
(a) The power supply state detection unit 168 detects that the radio power supply is in an ON state.
(b) One of the peak value in the frequency characteristic of the generated noise read from the database 159 corresponding to the currently set number of revolutions of the pump motor 64 and the reception frequency detected by the reception frequency detection unit 170 is If the peak value of the frequency distribution of the generated noise corresponding to the currently set rotation speed of the pump motor 64 is close to the reception frequency, the noise will be received by the radio receiver. Is likely to occur.
Fourth example
(a) The power supply state detection unit 168 detects that the radio power supply is in an ON state.
(b) The broadcasting station selected by the tuner unit 182 is a broadcasting station stored in a storage unit that stores past noise generation information.
(c) The current position detected by the navigation system 160 is a position stored in a storage unit that stores past noise generation information. The same broadcast at the same location where noise has occurred in the radio receiver in the past. Similarly, when receiving a broadcast from a station, there is a high possibility that noise will occur.
Fifth example
(a) The power supply state detection unit 168 detects that the radio power supply is in an ON state.
(b) The current reception conditions are the same as the reception conditions stored in the storage unit storing past noise occurrence information. In the reception conditions, in addition to the reception location of the fourth example, the reception broadcast station, The electric field strength, the number of revolutions of the pump motor 64, the weather, the size of the volume, and the like can be included. However, it is not essential to include all of these, and some of them may be included.
Sixth example
(a) The power supply state detection unit 168 detects that the radio power supply is in an ON state.
(b) The travel environment information acquired by the navigation system 160 is an environment that is likely to cause noise in the radio receiver. The travel environment information includes the relative positional relationship between the broadcasting station and the vehicle, the terrain, etc. Information and temporary information such as weather and events held in the area can be included. However, it is not indispensable to include all of the above information, and at least one may be included.
Seventh example
(a) The power supply state detection unit 168 detects that the radio power supply is in an ON state.
(b) One of the reception frequency detected by the reception frequency detector 170 and the frequency stored in the database 159 that is particularly susceptible to resonance is within a set frequency range in which the other is the median value. In some cases, there is a frequency at which resonance easily occurs between the wiring of the pump motor 64 and the wiring of the radio receiver 154. If the frequency that tends to resonate is checked in advance and stored in the database, the information can be used to effectively avoid the occurrence of radio noise.
Eighth example
(a) The tuner unit 182 is being tuned During the tuning of the tuner unit 182, radio noise may be generated during tuning or at the tuning destination. It will be judged. It should be noted that the tuner unit 182 being tuned is naturally in the condition that the radio power source is in the ON state, so that “the power source state detection unit 168 detects that the radio power source is in the ON state” is a special condition. There is no need to do.
Ninth case
(a) The tuner unit 182 is being tuned
(b) The peak value of the frequency distribution of the generated noise read from the database 159 corresponding to the currently set number of revolutions of the pump motor 64 and the reception frequency of the tuning destination of the tuning performed by the tuner unit 182 If the tuning destination is known during tuning of the tuner unit 182, the received frequency at the tuning destination is the frequency distribution of noise generated by the pump motor 64. When it is close to the peak value, it can be determined that noise countermeasures are necessary.
Tenth example
(a) The power supply state detection unit 168 detects that the radio power supply is in an ON state.
(b) The volume detected by the volume detection unit 170 is larger than the set volume. A large volume setting often indicates that the electric field strength at the reception frequency is low. Also, when the volume of the radio receiver is high, the noise often increases. Therefore, it is reasonable to determine that noise countermeasures are necessary when the volume is larger than the set value.

In the present embodiment, since the operation start timing of the pump motor 64 is changed according to the rotation speed of the pump motor 64, the determination as to whether the noise countermeasure is necessary needs to be performed prior to the determination as to whether the pump motor 64 is necessary. is there. Therefore, the above-described determination conditions for countermeasures against noise do not include that the pump motor 64 is in operation or that the level of generated noise detected by the noise detector 166 is equal to or higher than the set noise level. However, in general, the fact that the pump motor 64 is in operation is almost indispensable as a determination condition for noise countermeasures, and that the level of generated noise is equal to or higher than the set noise level is also determined as a countermeasure for noise countermeasures. It is desirable to add to the conditions. Also in this embodiment, as will be described later, these requirements are used in steps different from S4.
In addition, the determination condition for noise countermeasures in S4 is not limited to the above example, and a combination of a plurality of the determination conditions may be employed.
In the following description, it is assumed that the determination condition for noise countermeasures in S4 is the first example.

  The determination of the need for noise countermeasures for the younger brother is based on the following facts. As illustrated in FIG. 6, when the frequency characteristics in a state where the radio receiver 154 is receiving radio waves from a certain broadcasting station and the frequency distribution of noise generated with the rotation of the pump motor 64 are compared, If the frequency at which the electric field strength of both is maximum is not close, noise will not occur. On the other hand, as shown in FIG. 7, when the frequency at which the electric field strengths of the two are the same is close, there is a high possibility that the noise of the radio receiver 154 will increase, so it is highly likely that noise countermeasures are necessary. . Further, when the electric field intensity of the received radio wave is equal to or lower than the set value, it is necessary to increase the electronic volume 161. Therefore, noise is particularly likely to be generated in the radio receiver 154.

  Now, when the determination result in S4 is NO, no noise countermeasure is required, and in S5, the operation speed of the pump motor 64 is set to “medium speed”. However, this setting does not mean that the operation is started immediately because it is decided to operate at a medium speed if the operation is required. The “currently set rotational speed of the pump motor 64” in the noise countermeasure necessity determination condition of S4 means the operation speed set in this way. The operating condition of the pump motor 64 is set to “medium speed” in an initial setting routine (not shown).

After execution of S5, it is determined in S6 whether or not the pump motor 64 needs to be operated. As described above, the pump motor 64 is operated at three speeds of high, medium, and low, and the operation duration time is set to be substantially equal when the pump motor 64 is operated at any speed. This is because a driver whose driving duration is almost constant does not cause the driver to feel uneasy.
Specifically, the accumulator pressure, that is, the hydraulic pressure of the accumulator 72 is detected by the hydraulic pressure source hydraulic pressure sensor 130, and the fact that the accumulator pressure has reached the upper limit value and the lower limit value is detected by the pressure switch 132. The operation stop of the pump motor 64 is always performed according to the detection of the upper limit value by the pressure switch 132, but the operation start can be changed according to the operation speed of the pump motor 64. ing. As the operation speed of the pump motor 64 increases, the accumulator pressure can be increased to the upper limit value in a short time operation. Therefore, as the operation speed decreases, the accumulator pressure detected by the hydraulic pressure source hydraulic pressure sensor 130 is still high. In addition, the operation of the pump motor 64 is started. Even when the operation speed is “high speed”, the operation of the pump motor 64 is started in a state where the accumulator pressure is higher than the lower limit value, and the lower limit value is detected by the pressure switch 132 by any chance. Even when the pressure source hydraulic pressure sensor 130 fails, the accumulator 72 can store brake fluid in a predetermined hydraulic pressure range.
Therefore, when “medium speed” is set in S5, when the accumulator pressure is reduced to the medium speed corresponding set pressure stored in the database 159 corresponding to the medium speed, the determination result in S6 becomes YES, In S7, the operation of the pump motor 64 is started. Here, the medium speed set pressure is the lower threshold value, and the upper limit value is the upper threshold value.

  On the other hand, if the determination result in S4 is YES, that is, it is determined that noise countermeasures are required, it is determined in S8 whether or not the traveling state of the vehicle is a normal traveling state. That is, it is determined whether or not the vehicle is running in a state where there is a high possibility that the frequency of increasing and decreasing the pressure of the wheel cylinders 46 and 48 is high, such as during anti-lock control, traction control, and steering stability control. If it is determined that the vehicle is traveling normally, in S9, it is determined whether it is better to increase or decrease the rotation speed of the pump motor 64 that is currently set. As described above, the operation speed of the pump motor 64 is normally set to “medium speed”, and the determination result of S4 in that state is YES, the pump motor 64 is operated at “medium speed”. In this case, the peak value of the frequency distribution of the noise generated thereby is close to the reception frequency, and the electric field strength of the reception frequency is small, so that there is a high possibility that noise is generated in the radio receiver 154. . Therefore, the operating speed of the pump motor 64 should be changed, but it is determined whether the increase is effective or the decrease is effective. Specifically, whether the peak value of the frequency distribution of noise generated with the operation of the pump motor 64 is farther from the reception frequency in either the “low speed” or the “high speed”. It is determined and it is determined that it is more effective to move farther away. If it is determined that changing to “low speed” is more effective, steps S10 to 12 are executed. If it is determined that changing to “high speed” is more effective, steps S13 to 15 are executed. . Since these executions are the same as in S5 to S7 described above, description thereof will be omitted. However, when the operation speed of the pump motor 64 is set to “low speed”, the pump is used when the accumulator pressure reaches the low speed corresponding set pressure. When the motor 64 is activated and set to “high speed”, the pump motor 64 is activated when the accumulator pressure reaches the high-speed setting pressure. The upper threshold value does not change with the upper limit value, whereas the lower threshold value is changed according to the set rotational speed of the pump motor 64.

  Also, S13 to S15 are executed when the determination result of S8 is NO. When the vehicle is traveling in a state where the frequency of increasing and decreasing the pressure of the wheel cylinders 46 and 48 is likely to increase, the consumption of brake fluid in the accumulator 72 is large and the rotational speed of the pump motor 64 is decreased. However, since there is a possibility that the brake fluid is insufficient, the rotation speed is changed only to the increase side.

  After execution of S7, 12 or 15, the flag indicating that the pump motor 64 is operating is set to ON in S16, and then S17 to 22 are executed. Since the flag is set ON, the determination result is YES when S1 is executed thereafter, S2 to 16 are skipped, and S24 is executed instead. That is, it is determined whether or not the operation of the pump motor 64 is unnecessary, that is, whether or not the pressure switch 132 has detected that the accumulator pressure has reached the upper threshold value (upper limit value). If the result is YES, the pump motor 64 is stopped in S25, and the flag is turned OFF in S26, but S17 to 23 are repeatedly executed until the determination result is YES.

In S17, a set time necessary for the rotation of the pump motor 64 to reach a substantially steady state is waited, and after that time, the level of generated noise detected by the noise detecting unit 166 is set in S18. It is determined whether or not the noise level is exceeded. Specifically, as shown in FIG. 8, it is determined whether or not the difference between the peak value and the average value of the electric field strength within a frequency band having a set width with the radio reception frequency as the median value is equal to or less than the set difference. It is done. In the radio receiver 154, “noise is large” means that noise that is sound other than the original sound based on broadcast radio waves is large. If the noise is large, the average value increases with respect to the peak value of the electric field strength. Therefore, the difference between the two becomes small.
If the determination result is YES, it means that the rotational speed control of the pump motor 64 performed in S2 to 15 is insufficient as a noise countermeasure, and the volume is decreased in S19. After a reduction command, the passage of a fixed time is waited in S20 until the effect appears, and it is determined in S21 whether the generated noise is large. This determination is to determine whether or not a large noise is still being emitted from the radio receiver 154 even though the electronic volume 161 has been reduced. Therefore, unlike the determination in S18, the radio receiver 154 is determined. This is performed depending on whether or not the average value of the electric field intensity in the frequency band of the set width with the received frequency as the median is equal to or higher than the set value. If the determination result is YES, the power switch of the radio receiver 154 is turned off in S22.
In this embodiment, the volume is reduced once, and if that is not sufficient, the power switch is turned off. It is also possible for the power switch to be turned off if this is sufficient.

  As is apparent from the above description, in this embodiment, the pump motor 64 and the radio receiver 154 constitute an electric motor and a radio receiver, respectively, and motor / radio related control routines S1 to S16, S24 of the brake ECU 112 are shown. The part that executes S26 constitutes a motor control unit in cooperation with the motor control circuit 152, the radio state detection part 158, etc., and the part that executes S17 to S23 of the motor / radio related control routine of the brake ECU 112 A receiver control unit is configured in cooperation with the control unit 156. This motor / receiver-related control device changes the control of the pump motor 64 according to the state of the radio receiver 154, and changes the control of the radio receiver 154 according to the operating state of the pump motor 64. It is intended to do both.

  The motor control section includes a rotation speed control section that controls the rotation speed of the pump motor 64 in accordance with the reception frequency of the radio receiver 154. The rotation speed control section determines the rotation speed of the pump motor 64 in advance. It is a step change section that selectively changes to any of the three steps. Further, in the rotation speed control unit, a part that executes S9 to 15 constitutes a bidirectional change part, a part that executes S13 to 15 constitutes a unidirectional change part, and a part that executes S8 is a bidirectional change part. The selection part which selects a one-way change part is comprised. This selection unit selects a rotation speed increasing unit, which is an example of a one-way changing unit, when the driving state of the vehicle is a driving state in which there is a high possibility that the frequency of increasing / decreasing the hydraulic pressure of the brake of the hydraulic brake system is high In other cases, the pressure increasing / decreasing frequency corresponding selecting unit for selecting the bidirectional changing unit is provided. The motor control unit includes a portion that executes S5, 6, S10, 11, and S13, 14, so that the difference in operating time of the pump motor 64 between when the pump motor 64 is high and when it is low Is provided with an operation start time changing section for changing the operation start time in a direction in which the value becomes smaller.

  In addition, in the receiver control unit, the part that executes S18 and S19 controls that the pump motor 64 is in operation, and the control of the pump motor 64 by the motor control unit suppresses noise generation of the radio receiver 154. Is configured to reduce the volume of the radio receiver 154 when the condition that the radio receiver 154 is insufficient is satisfied, and the part that executes S21 to 22 is a power-off unit that turns off the radio receiver 154. The volume reduction unit and the power-off unit constitute a volume reduction unit that reduces the volume of the radio receiver 154.

  It is also possible to change the determination condition for noise countermeasure necessity in S4 of the present embodiment to that of the ninth example, in which case the receiver control unit adds that the pump motor 64 is in operation. Thus, when the condition that the reception frequency of the tuning destination of the radio receiver 154 corresponds to the rotation speed of the pump motor 64 is satisfied, the volume of the radio receiver 154 is reduced. It becomes.

Another embodiment will be described next. In this embodiment, the condition for determining whether or not noise countermeasures in S4 are necessary is the same as in the fifth example.
(a) The power supply state detection unit 168 detects that the radio power supply is in an ON state.
(b) This is an embodiment in the case where the current reception condition is the same as the reception condition stored in the storage unit storing past noise occurrence information. The motor / radio related control apparatus of the present embodiment is the same as the above embodiment except that the motor / radio related control routine is that of FIG. 9 and FIG. 10, and there are many motor / radio related control routines. Since the portions are the same as those in the above embodiment, the same steps are denoted by the same reference numerals, and detailed description thereof is omitted.
The flag F2 is the same as the “flag” in the above embodiment, and the flag F1 is a flag for a new function.

  When the operation speed of the pump motor 64 is changed from “medium speed” to “low speed” or “high speed” and the operation of the pump motor 64 is started, the flag F1 is turned on in S31. If it is determined in S18 that the noise is large, it is determined in S32 whether or not the flag F1 is ON. If the determination result is YES, no noise countermeasures are required because there is no past noise generation information indicating that noise has occurred under the reception condition corresponding to the reception condition at that time at the time of determination in S4. The pump motor 64 is determined to be present and started to operate at “medium speed”, but noise of a set level or higher has occurred in the radio receiver 154. Therefore, if the determination result in S32 is NO, noise generation information is stored in the storage unit of the navigation system 160 in S33. The peak value of the frequency distribution of the generated noise, the frequency corresponding to the peak value, and the like are associated with the position where the noise is generated and stored in the storage unit.

Thereafter, in S8 to S15, noise countermeasures are performed by changing the rotation speed of the pump motor 64. These steps are the same as in the above embodiment, but since the operation of the pump motor 64 has already started, S34 and S35 are executed instead of S11 and S14, the determination result is YES, and the speed is low in S12. Operation is started, and high-speed operation is started in S15. In other words, the rotational speed of the pump motor 64 is changed from “medium speed” to “low speed” or “high speed”.
Further, S36 is executed instead of S6, and the flags F1 and F2 are turned OFF.

As is clear from the above description, in this embodiment, noise generation information when noise of a set level or higher occurs in the radio receiver 154 is stored in the navigation system 160, and thereafter, the noise generation information and reception conditions are stored. When the situation becomes the same, the rotation speed of the pump motor 64 is changed as a noise countermeasure. If that is not sufficient, the noise countermeasure is implemented by reducing the volume of the radio receiver.
The motor / radio related control routines of FIGS. 4 and 5 and the motor / radio related control routines of FIGS. 9 and 10 have been described as routines in separate embodiments in order to avoid complexity. Therefore, it is desirable to implement both routines together.

  Although several embodiments of the claimable invention have been described above, these are literally only examples, and the claimable invention includes knowledge of those skilled in the art including the aspects described in the above [Aspect of the Invention] section. It can implement in the aspect which gave various changes based on this.

It is a figure which shows notionally the motor-receiver related control apparatus which is one Example of claimable invention, and the electronically controlled hydraulic brake system provided with the pump motor controlled by it. It is a functional block diagram which shows the said motor and receiver related control apparatus. FIG. 3 is a block diagram conceptually showing a noise detection unit in FIG. 2. It is a flowchart showing a part of motor / receiver related control routine executed in the motor / receiver related control device. It is a flowchart showing the remaining part of the said motor and receiver related control routine. It is a graph for demonstrating the radio noise reduction by the rotation speed change of the pump motor performed by the said motor and receiver related control apparatus. It is another graph for demonstrating the radio noise reduction by the rotation speed change of the said pump motor. It is another graph for demonstrating the radio noise reduction by the rotation speed change of the said pump motor. It is a flowchart showing a part of motor / receiver related control routine performed in the motor / receiver related control apparatus which is another Example. It is a flowchart showing the remaining part of the motor and receiver related control routine in the said another Example.

Explanation of symbols

16: Power hydraulic pressure source 22, 24, 26, 28: Hydraulic brake 36, 38, 46, 48: Wheel cylinder 54: Hydraulic control valve device 62: Pump 64; Pump motor 72: Accumulator 112: Brake ECU 130: Fluid pressure source Fluid pressure sensor 132: Pressure switch 150: Motor / radio related control unit 152: Motor control circuit 154: Radio receiver 156: Radio control unit 158: Radio state detection unit 159: Database 160: Navigation system 161: Electronic volume 162: Power switch 166: Noise detector

Claims (10)

A motor / receiver related control device that controls at least the other according to the state of at least one of an electric motor and a radio receiver mounted on a vehicle,
(a) a motor control unit that changes the control of the electric motor according to the operating state of the radio receiver; and (b) a receiver control that changes the control of the radio receiver according to the operating state of the electric motor. A motor / receiver-related control device comprising at least one of a first unit and a second unit.   The motor / receiver according to claim 1, further comprising: a rotation speed control section that controls the rotation speed of the electric motor in accordance with at least a reception frequency of the wireless receiver. Machine related control device.   The rotational speed control unit selectively reduces the rotational speed of the electric motor to one of three or more predetermined stages, and decreases in a direction to increase the rotational speed of the electric motor. A bidirectional change unit that also changes the direction to be changed, and the bidirectional change unit can be changed to a step that increases or decreases the number of rotations of the electric motor. The motor / receiver related control device according to claim 2, wherein the motor / receiver related control device is configured to change from a corresponding rotational speed to a farther stage.   4. The motor / receiver related control device according to claim 2, wherein the electric motor includes a pump motor that drives a hydraulic pump that pumps the brake fluid to an accumulator that stores the brake fluid of the hydraulic brake system under pressure. 5.   The rotational speed control unit is configured to change both the direction in which the rotational speed is increased and the direction in which the rotational speed is decreased, the unidirectional changing unit that changes only in one of the increasing direction and the decreasing direction, and The motor / receiver-related control device according to claim 4, further comprising a selection unit that selects a bidirectional change unit and a unidirectional change unit.   The one-way changing unit includes a rotation number increasing unit that changes only in a direction in which the rotation number of the electric motor is increased, and the selection unit is configured to determine whether the traveling state of the vehicle is a hydraulic pressure of a brake of the hydraulic brake system. 6. The pressure-increasing / decreasing frequency selection unit that selects the rotation speed increasing unit when the driving state is highly likely to increase in the frequency of increasing / decreasing pressure, and selects the bi-directional change unit in other cases. The motor / receiver related control device described.   The said motor control part was provided with the operation start time change part which changes an operation start time so that the difference of the operation time of a pump motor may become small when the rotation speed of the said pump motor is large and small. The motor / receiver-related control device according to any one of 6.   Including the receiver control unit, and the receiver control unit includes a volume reduction unit that reduces the volume of the wireless receiver when a setting condition including at least that the electric motor is operating is satisfied. The motor / receiver related control device according to claim 1.   9. The setting condition includes a condition that, in addition to the electric motor being in operation, the control of the electric motor by the motor control unit is insufficient in suppressing noise generation of the radio receiver. The motor / receiver related control device described in 1.   9. The setting condition includes a condition that, in addition to the electric motor being in operation, a reception frequency at a tuning destination of the wireless receiver and a rotation speed of the electric motor correspond to each other. Or the motor / receiver-related control device according to 9.

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