WO2016084501A1 - 予測進路推定装置及び予測進路推定方法 - Google Patents
予測進路推定装置及び予測進路推定方法 Download PDFInfo
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- WO2016084501A1 WO2016084501A1 PCT/JP2015/078898 JP2015078898W WO2016084501A1 WO 2016084501 A1 WO2016084501 A1 WO 2016084501A1 JP 2015078898 W JP2015078898 W JP 2015078898W WO 2016084501 A1 WO2016084501 A1 WO 2016084501A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
- B60W40/072—Curvature of the road
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0001—Details of the control system
- B60W2050/0043—Signal treatments, identification of variables or parameters, parameter estimation or state estimation
- B60W2050/0052—Filtering, filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/932—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles using own vehicle data, e.g. ground speed, steering wheel direction
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9325—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles for inter-vehicle distance regulation, e.g. navigating in platoons
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
- G06V20/588—Recognition of the road, e.g. of lane markings; Recognition of the vehicle driving pattern in relation to the road
Definitions
- the present disclosure relates to a predicted course estimation technique for estimating a predicted course of the host vehicle.
- ACC Adaptive Cruise Control
- the predicted course of the host vehicle is estimated from the vehicle speed and the yaw rate of the vehicle.
- a filter process is performed to remove a noise component (high frequency component) included in the detected value of the yaw rate (see Patent Document 1).
- This disclosure is intended to provide a predicted route estimation technique that can improve the estimation accuracy of the predicted route of the host vehicle.
- the present disclosure relates to a predicted course estimation apparatus that estimates a predicted course of a host vehicle, and includes data acquisition means that acquires turn data indicating a turn direction of the host vehicle, and filter processing means that removes high-frequency components included in the turn data. And a route prediction means for calculating an estimated value of the route prediction of the host vehicle based on the turn data after the filtering process and the vehicle speed of the host vehicle, and whether or not the host vehicle travels on a road shape switching portion. And a characteristic changing means for changing the degree to which the high frequency component is removed by the filter processing means when it is determined that the host vehicle travels on a road shape switching portion.
- the degree of removal of high-frequency components (noise components) by filtering is changed when the host vehicle travels on a road shape switching portion.
- suitable filter processing can be performed according to the road shape on which the own vehicle runs.
- FIG. 1 is a block diagram of a vehicle system.
- FIG. 2 is a functional block diagram of the inter-vehicle control ECU.
- FIG. 3 is an explanatory diagram of the filter characteristic setting.
- FIG. 4 is a flowchart of filter characteristic change in predictive course estimation.
- FIG. 5 is a diagram illustrating an execution example of the filter characteristic change in the predicted course estimation.
- FIG. 6 is an explanatory diagram of a modification example of the filter processing.
- FIG. 1 shows a block diagram of a vehicle system 10 according to the present embodiment.
- the vehicle on which the vehicle system 10 is mounted is driven by transmitting the driving force of the engine as a power source to the wheels via the transmission.
- the vehicle system 10 includes a vehicle speed sensor 11, a yaw rate sensor 12, a steering angle sensor 13, a radar device 15, an inter-vehicle control ECU 20, an engine ECU 30, a brake ECU 40, and various actuators.
- the vehicle speed sensor 11 detects the vehicle speed of the host vehicle by actual measurement or estimation.
- the vehicle speed sensor 11 includes a plurality of wheel speed sensors that detect the wheel speed for each wheel, and estimates the vehicle speed of the host vehicle using output signals from the plurality of wheel speed sensors.
- the yaw rate sensor 12 detects the yaw rate actually generated by the host vehicle (angular velocity around the center of gravity of the vehicle).
- the yaw rate sensor 12 includes a vibrator such as a tuning fork, and detects the yaw rate of the host vehicle by detecting distortion generated in the vibrator based on the yaw moment of the host vehicle.
- the steering angle sensor 13 detects the rotation angle at which the steering wheel of the host vehicle is rotated as the steering angle.
- the radar device 15 detects an object ahead of the host vehicle.
- the radar device 15 reciprocally scans an electromagnetic wave beam including laser light, millimeter waves, sound waves, and the like at a predetermined scanning angle in a direction intersecting with the traveling direction of the host vehicle.
- the radar device 15 receives the electromagnetic wave reflected by the object within the scanning range, the radar device 15 detects the distance, relative speed, direction, and the like between the object that reflects the electromagnetic wave and the host vehicle. Then, the radar device 15 identifies the preceding vehicle from the object using parameters such as the detected distance, relative speed, direction, etc., the inter-vehicle distance that is the distance between the preceding vehicle and the host vehicle, and the preceding vehicle with respect to the host vehicle. Detect relative orientation.
- the inter-vehicle control ECU 20 functions as a predicted course estimating device that estimates the predicted course of the host vehicle, and controls the inter-vehicle distance between the host vehicle and the preceding vehicle to be a target distance.
- the details of the function of the inter-vehicle control ECU 20 as the predicted course estimation device will be described later.
- the engine ECU 30 determines the throttle opening according to a command signal for controlling the inter-vehicle distance received from the inter-vehicle control ECU 20 (hereinafter referred to as “inter-vehicle control”) and the current vehicle speed, and the throttle actuator 31 while monitoring the throttle opening. To control. Further, the engine ECU 30 determines whether or not it is necessary to change gear positions (necessity) based on the upshift line and the downshift line determined for the throttle opening and the vehicle speed. In this case, the transmission 32 is instructed to the gear position.
- the transmission 32 may be any mechanism such as AT (Automatic Transmission) or CVT (Continuously Variable Transmission).
- the brake ECU 40 brakes the host vehicle by controlling the opening / closing and opening of the brake actuator 41 based on the inter-vehicle control command signal received from the inter-vehicle control ECU 20.
- the brake actuator 41 controls the deceleration (or acceleration) of the host vehicle by increasing, maintaining, or reducing the wheel cylinder pressure of each wheel by the pressure generated by the pump in the working fluid (for example, oil). .
- FIG. 2 shows a functional block diagram of the inter-vehicle control ECU 20.
- the inter-vehicle control ECU 20 includes a radar signal processing unit 21, an inter-vehicle distance control unit 22, and a predicted course estimation unit 200.
- the radar signal processing unit 21 is connected to the radar device 15 and acquires information related to the preceding vehicle detected by the radar device 15.
- the inter-vehicle distance control unit 22 uses the output signal of the radar device 15 and the predicted course of the host vehicle estimated by the predicted course estimation unit 200 via the radar signal processing unit 21 to determine the distance between the host vehicle and the preceding vehicle. Command signals are output to the engine ECU 30 and the brake ECU 40 so that the distance approaches the target distance. That is, the inter-vehicle distance control unit 22 outputs a command signal to the brake ECU 40 to control the brake operating force when the host vehicle is decelerated. When accelerating the host vehicle, a command signal is output to the engine ECU 30 to control the throttle opening and the gear ratio.
- the predicted course estimation unit 200 is connected to the vehicle speed sensor 11 and the yaw rate sensor 12, and includes functions of a filter processing unit 201, a characteristic change unit 202, and a calculation unit 203.
- the filter processing unit 201 removes a noise component (hereinafter referred to as “high frequency component”) included in the data of the turning direction of the own vehicle (hereinafter referred to as “turning data”).
- the characteristic changing unit 202 changes the characteristic of the filter that removes the high frequency component.
- the calculation unit 203 calculates an estimated value of the predicted course of the host vehicle.
- the filter processing unit 201 uses the detected value of the yaw rate by the yaw rate sensor 12 as the turning data, and removes the high frequency component included in the yaw rate using the analog filter shown in Expression (1).
- Y0 Y ⁇ 2 ⁇ f (1)
- Y is a detected value of the yaw rate by the yaw rate sensor 12 (hereinafter referred to as “actual yaw rate”).
- 2 ⁇ f is an analog filter (low-pass filter), and cuts (removes) high-frequency components having a cutoff frequency f or higher.
- Y0 is the yaw rate after filtering (hereinafter referred to as “calculated yaw rate”).
- the predicted course estimation unit 200 uses the characteristic changing unit 202 to change the filter characteristic in the filter process according to the determination result of whether or not the host vehicle travels the road shape switching portion. To do.
- the relationship between the change in the yaw rate and the setting of the filter characteristics when the host vehicle travels on a straight part (straight road) and a curved part (curved road) of the road will be described with reference to FIG.
- the change amount ⁇ Y of the actual yaw rate Y of the host vehicle becomes less than a predetermined first threshold Th1.
- the cutoff frequency f of the filter is set to a lower f1.
- the cutoff frequency f of the filter is set to a higher f2 (f2> f1).
- the high-frequency component of the actual yaw rate Y is easily removed, and the stability of the calculated yaw rate is improved.
- the high-frequency component of the actual yaw rate Y is difficult to remove, and the response delay associated with the filter processing is reduced. Vehicle followability) is improved.
- the characteristic changing unit 202 is used to filter the cutoff frequency f1. Switch to f2 filter immediately.
- the cutoff frequency f of the filter is set to a higher f2
- the degree of removal of high-frequency components by the filter processing decreases. Therefore, when switching from the filter having the cutoff frequency f2 to the filter having the frequency f1 (when the degree of removal of the high-frequency component is increased by the filter process), the filter process having the cutoff frequency f2 is performed (the high-frequency component is removed). There is a concern that overshoot may occur in which the influence of the high-frequency component remaining on the actual yaw rate Y is difficult to be eliminated.
- the characteristic changing unit 202 gently changes the cutoff frequency f when switching from the filter having the cutoff frequency f2 to the filter having the frequency f1.
- the characteristic changing unit 202 changes the cut-off frequency from f2 to f3 and from f3 to f1 in accordance with a predetermined change amount ⁇ f representing a curved change in unit time.
- the cut-off frequency f2 is changed from f2 to f3 and f3 is changed to f1 according to a predetermined change amount ⁇ f representing a step-like change in unit time.
- the filter characteristic is changed from a characteristic in which high-frequency components are not easily removed (characteristic with a low degree of removal) to a characteristic that is easy to remove (a characteristic with a high degree of removal).
- a characteristic with a low degree of removal a characteristic in which high-frequency components are not easily removed
- a characteristic that is easy to remove a characteristic with a high degree of removal
- the degree of removal of the high frequency component included in the turn data is set according to the road shape on which the own vehicle is traveling. That is, the actual yaw rate Y differs between when the host vehicle travels on a straight portion of the road and when the host vehicle travels on a curve portion. Therefore, in the predicted course estimation unit 200 according to the present embodiment, when the host vehicle is not traveling on the road shape switching portion, the characteristic changing unit 202 is used to cut the filter according to the magnitude of the actual yaw rate Y. The off frequency f is set.
- the characteristic changing unit 202 sets the cutoff frequency f of the filter higher when the host vehicle travels along the curved portion than when the host vehicle travels along the straight portion.
- the calculation unit 203 is connected to the vehicle speed sensor 11 and the filter processing unit 201, and calculates the equation (2) using the vehicle speed V and the calculation yaw rate Y 0, thereby An estimated value R of the predicted course is calculated.
- the predicted course estimation unit 200 first determines whether or not the change amount ⁇ Y of the actual yaw rate Y is equal to or greater than the first threshold Th1 by the characteristic changing unit 202 (S11).
- the process of S11 corresponds to a process (determination unit) for determining whether or not the host vehicle travels on a road shape switching portion.
- the predicted course estimation unit 200 determines whether or not the actual yaw rate Y is less than the second threshold Th2 ( S14).
- the process of S14 determines whether or not the actual yaw rate Y is less than the second threshold Th2 when it is determined that the host vehicle is not traveling on the road shape switching portion.
- the predicted course estimation unit 200 determines that the actual yaw rate Y is equal to or greater than the second threshold Th2 (Y ⁇ Th2; when S14 is NO)
- the characteristic changing unit 202 sets the cutoff frequency f of the filter to f3 ( S16).
- the characteristic changing unit 202 sets the cutoff frequency f of the filter to f1. (S15).
- the predicted course estimation unit 200 determines whether or not there is a lane change (the presence or absence of a lane change). (S12).
- the process of S12 determines whether or not there is a lane change when it is determined that the host vehicle travels on a road shape switching portion.
- the predicted course estimation unit 200 detects the blinker operation, for example, and determines that there is a lane change (when S12 is YES), the process is terminated.
- the detection of the blinker operation corresponds to a process (lane change detection means) for detecting whether or not the lane of the host vehicle has been changed.
- the predicted course estimation unit 200 sets the cutoff frequency f of the filter to f2 by the characteristic change unit 202 (S13).
- the road shown in FIG. 5 has a first straight line portion R1, a curve portion R2, and a second straight line portion R3.
- the curve portion R2 includes a first curvature change portion R21 on the entrance side with a curvature change (clothoid curve change), a constant curvature portion R22 with a constant curvature, and an exit side with a curvature change (clothoid curve change).
- a second curvature changing portion R23 is a first curvature change portion R21 on the entrance side with a curvature change (clothoid curve change), a constant curvature portion R22 with a constant curvature, and an exit side with a curvature change (clothoid curve change).
- the cutoff frequency f of the filter is set to f1. In this case, the degree to which the high frequency component of the actual yaw rate Y is removed is increased. Thereafter, when the vehicle travels at the position B of the first curvature change portion R21 on the entrance side, the change amount ⁇ Y of the actual yaw rate Y is equal to or greater than the first threshold Th1 because the position B is a road shape switching portion. It becomes. As a result, the filter cutoff frequency f is immediately switched from f1 to f2. At this time, the cut-off frequency f is switched instantaneously at the beginning of entering the first curvature changing portion R21.
- the change amount ⁇ Y of the actual yaw rate Y is less than the first threshold Th1, and the actual yaw rate Y is greater than or equal to the second threshold Th2.
- the cutoff frequency f of the filter is changed from f2 to f3.
- the cutoff frequency f is gradually changed from the cutoff frequency f2 to f3 as shown in FIG. 3 (c) or (d).
- the change amount ⁇ Y of the actual yaw rate Y becomes the first threshold Th1 or more again.
- the cutoff frequency f of the filter is instantaneously changed from f3 to f2.
- the change amount ⁇ Y of the actual yaw rate Y becomes less than the first threshold Th1.
- the cutoff frequency f of the filter is gradually changed from f2 to f1, and then maintained at the cutoff frequency f1.
- the vehicle system 10 according to the present embodiment has the following excellent effects.
- the filter characteristic when the filter characteristic is changed to a characteristic in which high-frequency components are easily removed (characteristics with a high removal rate), the characteristics are changed to characteristics that are difficult to remove high-frequency components (characteristics with a low removal rate). Compared to the case, the degree of removal of high-frequency components (removal rate) was changed gently. Thereby, in the vehicle system 10 which concerns on this embodiment, when changing to the characteristic in which a high frequency component is easy to be removed, generation
- the filter processing by distinguishing the direction change such as lane change and the road shape switching such as a straight road or a curved road.
- the filter characteristic is changed to a characteristic in which high frequency components are not easily removed. Thereby, in the vehicle system 10 which concerns on this embodiment, the response delay of the filter process resulting from the variation
- This embodiment is not limited to the above, and may be implemented as follows.
- the predicted course estimation unit 200 uses the actual yaw rate Y as turning data, but the present invention is not limited to this.
- the turning data may be a detected value of the steering angle by the steering angle sensor 13 or a detected value of the torque by the torque sensor.
- the road shape switching portion is determined based on the change amount ⁇ Y of the turning data, but the present invention is not limited to this.
- there are other methods for determining the road shape switching portion such as detection results of white lines (guardrail shape) by image processing of captured images taken with a camera provided in front of the vehicle, and information outside the vehicle such as navigation information. Etc. may be determined using, for example.
- the degree of removing the high frequency component from the turning data is changed based on the determination result of whether or not the road shape is switched.
- the degree of removal of the high frequency component is changed according to the turning data, but this is not restrictive.
- the degree of removing the high frequency component may be changed according to the vehicle speed V. That is, as shown in Expression (2) of the above-described embodiment, as the vehicle speed V of the host vehicle increases (the speed increases), the influence of the actual yaw rate Y on the estimated value R of the predicted course decreases. Therefore, as shown in FIG. 6, when the vehicle speed V is low (when the speed is low), the cutoff frequency f of the filter is set to be low in order to enhance the effect of suppressing the high-frequency component contained in the actual yaw rate Y.
- the cut-off frequency f of the filter is set to be high in order to suppress the effect of suppressing the high-frequency component contained in the actual yaw rate Y and increase the responsiveness of the predicted course estimation. To do.
- the degree of removal of the high frequency component is changed by changing the cutoff frequency f of the filter, but the present invention is not limited to this.
- the degree of removing the high frequency component may be changed by changing the time constant ⁇ of the filter. That is, when the host vehicle is not traveling on the road shape switching portion, the degree of removal of the high-frequency component of the actual yaw rate Y is increased by relatively increasing the filter time constant ⁇ . On the other hand, when the host vehicle travels on a road shape change portion, the time constant ⁇ of the filter is made relatively small to suppress the degree to which the high frequency component of the actual yaw rate Y is removed, and the predicted route estimation response To improve the sex.
- the cut-off frequency f of the filter when the change amount ⁇ Y of the turning data in the host vehicle is equal to or greater than the predetermined first threshold value Th1, the cut-off frequency f of the filter is set higher, but the present invention is not limited to this. In this case, the cut-off frequency f of the filter may be set lower.
- the mode of changing the filter characteristics may be the same for the case where the filter characteristics are changed to a characteristic in which high-frequency components are easily removed and the case where the filter characteristics are changed to characteristics in which high-frequency components are difficult to be removed.
- SYMBOLS 10 ... Vehicle system, 11 ... Vehicle speed sensor, 12 ... Yaw rate sensor, 13 ... Steering angle sensor, 15 ... Radar device, 20 ... Inter-vehicle control ECU, 200 ... Prediction course estimating part, 201 ... Filter processing part, 202 ... Characteristic change part , 203 ... arithmetic unit, A ... position, B ... position, C ... position, D ... position, R21 ... first curvature change portion, R22 ... curvature constant portion, R23 ... second curvature change portion, V ... vehicle speed.
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Abstract
Description
ここで、Yはヨーレートセンサ12によるヨーレートの検出値(以下「実ヨーレート」という)である。2πfはアナログフィルタ(ローパスフィルタ)であり、カットオフ周波数f以上の高周波成分をカット(除去)する。Y0はフィルタ処理後のヨーレート(以下「演算ヨーレート」という)である。
算出された予測進路の推定値Rは、車間距離制御部22による車間制御に使用されることとなる。
Claims (11)
- 自車両の予測進路を推定する予測進路推定装置(20)であって、
前記自車両の旋回方向を示す旋回データを取得するデータ取得手段と、
前記旋回データに含まれる高周波成分を除去するフィルタ処理手段と、
フィルタ処理後の旋回データと前記自車両の車速とに基づいて、前記自車両の進路予測の推定値を算出する進路予測手段と、
前記自車両が道路形状の切り替わり部分を走行するか否かを判定する判定手段と、
前記自車両が前記道路形状の切り替わり部分を走行すると判定された場合に、前記フィルタ処理手段により前記高周波成分が除去される度合いを変更する特性変更手段と、
を備える予測進路推定装置。 - 前記特性変更手段は、前記フィルタ処理手段のフィルタ特性を前記高周波成分が除去される度合いの高い特性に変更する場合に、前記高周波成分が除去される度合いの低い特性に変更する場合に比べて、前記高周波成分が除去される度合いを緩やかに変更する請求項1に記載の予測進路推定装置。
- 前記自車両の車線変更の有無を検出する車線変更検出手段を備え、
前記特性変更手段は、前記自車両が前記道路形状の切り替わり部分を走行し、前記車線変更がある場合に、前記高周波成分が除去される度合いを変更する請求項1又は2に記載の予測進路推定装置。 - 前記特性変更手段は、前記自車両が道路のカーブの入口部分を走行する場合に、前記フィルタ処理手段のフィルタ特性を、前記高周波成分が除去される度合いの低い特性に変更する請求項1乃至3のいずれか1項に記載の予測進路推定装置。
- 前記特性変更手段は、前記自車両が道路のカーブの出口部分を走行する場合に、前記フィルタ処理手段のフィルタ特性を、前記高周波成分が除去される度合いの低い特性に変更する請求項1乃至3のいずれか1項に記載の予測進路推定装置。
- 前記特性変更手段は、前記自車両が、曲率変化を伴う曲率変化部分と曲率が一定となる曲率一定部分とを有する道路のカーブを走行する場合に、前記曲率変化部分の走行時に適用する前記フィルタ処理手段のフィルタ特性を、前記曲率一定部分の走行時に適用する前記フィルタ特性よりも、前記高周波成分が除去される度合いの低い特性に変更する請求項1乃至5のいずれか1項に記載の予測進路推定装置。
- 前記特性変更手段は、前記車速に応じて、前記高周波成分を除去される度合いを変更する請求項1乃至6のいずれか1項に記載の予測進路推定装置。
- 前記特性変更手段は、前記自車両が走行する道路の曲率に応じて、前記高周波成分が除去される度合いを変更する請求項1乃至7のいずれか1項に記載の予測進路推定装置。
- 前記旋回データは、前記自車両のヨーレート又は操舵角の検出値である請求項1乃至8のいずれか1項に記載の予測進路推定装置。
- 前記自車両に設けられ、前記自車両の前方に位置する物体を検出する物体検出手段と、
前記物体が先行車両である場合に、前記自車両の加速と減速を制御して、前記先行車両に対する車間距離を維持して追従走行する追従走行制御手段と、を備える請求項1乃至9のいずれか1項に記載の予測進路推定装置。 - 自車両の予測進路を推定する予測進路推定方法であって、
前記自車両の旋回方向を示す旋回データを取得する工程と、
前記旋回データに含まれる高周波成分を除去するフィルタ処理を実行する工程と、
フィルタ処理後の旋回データと前記自車両の車速とに基づいて、前記自車両の進路予測の推定値を算出する工程と、
前記自車両が道路形状の切り替わり部分を走行するか否かを判定する工程と、
前記自車両が前記道路形状の切り替わり部分を走行すると判定された場合に、前記フィルタ処理により前記高周波成分が除去される度合いを変更する工程と、
を含む予測進路推定方法。
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| US15/529,914 US10423161B2 (en) | 2014-11-28 | 2015-10-13 | Predicted course estimating apparatus and predicted course estimating method |
| DE112015005330.1T DE112015005330B4 (de) | 2014-11-28 | 2015-10-13 | Vorhersagekursabschätzvorrichtung und Vorhersagekursabschätzverfahren |
| CN201580063809.1A CN107004365B (zh) | 2014-11-28 | 2015-10-13 | 预测进路推断装置以及预测进路推断方法 |
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| JP6897495B2 (ja) | 2017-10-27 | 2021-06-30 | トヨタ自動車株式会社 | 配車システム及び配車方法 |
| WO2019104581A1 (zh) * | 2017-11-30 | 2019-06-06 | 深圳市大疆创新科技有限公司 | 轨迹生成方法、装置和无人驾驶地面车辆 |
| JP7205154B2 (ja) | 2018-10-16 | 2023-01-17 | トヨタ自動車株式会社 | 表示装置 |
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| CN114670851B (zh) * | 2022-04-20 | 2025-02-11 | 北京理工大学重庆创新中心 | 基于寻优跟踪算法的辅助驾驶系统、方法、终端及介质 |
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| JP6356584B2 (ja) | 2018-07-11 |
| US20170364084A1 (en) | 2017-12-21 |
| JP2016103221A (ja) | 2016-06-02 |
| US10423161B2 (en) | 2019-09-24 |
| CN107004365B (zh) | 2020-06-16 |
| CN107004365A (zh) | 2017-08-01 |
| DE112015005330T8 (de) | 2017-09-21 |
| DE112015005330B4 (de) | 2025-10-30 |
| DE112015005330T5 (de) | 2017-08-17 |
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