JP5052084B2 - インホイール型モータ内蔵センサ付きアクスルユニット - Google Patents
インホイール型モータ内蔵センサ付きアクスルユニット Download PDFInfo
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- JP5052084B2 JP5052084B2 JP2006252531A JP2006252531A JP5052084B2 JP 5052084 B2 JP5052084 B2 JP 5052084B2 JP 2006252531 A JP2006252531 A JP 2006252531A JP 2006252531 A JP2006252531 A JP 2006252531A JP 5052084 B2 JP5052084 B2 JP 5052084B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
- B60T8/329—Systems characterised by their speed sensor arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0076—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
- B60L7/26—Controlling the braking effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/30—In-wheel mountings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/50—Electric vehicles; Hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/50—Structural details of electrical machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/429—Current
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/46—Drive Train control parameters related to wheels
- B60L2240/461—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
- B60L2270/14—Emission reduction of noise
- B60L2270/145—Structure borne vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/24—Electric or magnetic using motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
- F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
- F16D2125/40—Screw-and-nut
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Vehicle Body Suspensions (AREA)
- Braking Arrangements (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Regulating Braking Force (AREA)
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Description
ブレーキが電動ブレーキであると、ブレーキ制御が容易である。
サスペンションの減衰手段が電動で作動して減衰の程度を変化させるものであると、サスペンションの制御が容易である。このサスペンションの制御が、前記センサの出力により適切に行われる。
駆動輪と路面の接地点に作用する進行方向の力の大きさによって電気モータに流れる電流量が異なるため、予め上記作用力と電流量の関係を実験やシミュレーションにて求めておくことにより、上記作用力の大きさを算出することができる。推定手段は、このように実験やシミュレーションにより予め求めて設定しておいた作用力と電流量の関係から、電流センサの出力により、駆動輪と路面の接地点に作用する進行方向の力を算出する。この方法で進行方向の作用力を求めることにより、同作用力を精度良く検出することができる。
駆動輪と路面の接地点に作用する駆動輪の軸方向の力の大きさによって静止側軌道輪の軸方向歪みの変化が異なるため、予め上記作用力と軸方向歪みの関係を実験やシミュレーションにて求めておくことにより、上記作用力の大きさを算出することができる。推定手段は、このように実験やシミュレーションにより予め求めて設定しておいた作用力と軸方向歪みの関係から、軸方向歪みセンサの出力により、駆動輪と路面の接地点に作用する駆動輪の軸方向の力を算出する。この方法で軸方向の作用力を求めることにより、同作用力を精度良く検出することができる。
駆動輪と路面の接地点に作用する駆動輪の鉛直方向の力の大きさによって静止側軌道輪の径方向歪みの変化が異なるため、予め上記作用力と径方向歪みの関係を実験やシミュレーションにて求めておくことにより、上記作用力の大きさを算出することができる。推定手段は、このように実験やシミュレーションにより予め求めて設定しておいた作用力と径方向歪みの関係から、径方向歪みセンサの出力により、駆動輪と路面の接地点に作用する鉛直方向の力を算出する。この方法で鉛直方向の作用力を求めることにより、同作用力を精度良く検出することができる。
また、センサ取付部材92は、金属粉末射出成形による焼結金属品としてもよい。金属粉末射出成形は、金属、金属間化合物等の成形技術の一つであり、金属粉末をバインダーと混練する工程、この混練物を用いて射出成型する工程、成形体の脱脂処理を行なう工程、成形体の焼結を行なう工程を含む。この金属粉末射出成形によれば、一般の粉末冶金に比べて焼結密度の高い焼結体が得られ、焼結金属品を高い寸法精度で製作することができ、また機械的強度も高いという利点がある。
また、この実施形態では、内方部材がハブの一部を構成する第3世代型のハブベアリングとしたが、内方部材と車輪のハブとが互いに独立した第1または第2世代型のハブベアリングとしても良い。さらに、各世代形式のテーパころタイプであるハブベアリングAとしても良い。
また、この発明のアクスルユニットは、自動車の車輪の全てに設けても良く、あるいは一部の車輪だけに設けても良い。
2…内方部材(ハブ)
3,4…転走面
5…転動体
50…電気モータ
70…駆動輪
73…サスペンション
74…減衰手段
80…電流センサ
81…軸方向歪みセンサ
82…径方向歪みセンサ
83…推定手段
84…異常判定手段
85…電気制御ユニット
87…回転数センサ
A…ハブベアリング
B…電気モータ
C…減速機
D…ブレーキ
O…中心軸
Claims (4)
- 駆動輪の中心軸に対して、同軸上にハブベアリング、電気モータ、減速機、ブレーキを配置し、これらハブベアリング、電気モータ、減速機、ブレーキのうちの少なくとも一つの構成要素の状態から、駆動輪と路面の接地点から直交する3軸方向の力を測定するセンサを設け、前記ブレーキが、ブレーキ用電気モータの回転出力を往復直線運動に変換してブレーキパッドに制動力として伝える電動ブレーキであり、前記3軸方向の力を測定するセンサとして、前記電気モータの電流値を測定する電流センサ、および前記ブレーキに作用するブレーキ力を測定するブレーキ力センサをそれぞれ設け、前記電流センサの出力、および前記ブレーキ力センサの出力を両方を比較対照して、駆動輪と路面の接地点に作用する進行方向の力を推定する推定手段を設け、
前記ハブベアリングの状態から駆動輪と路面の接地点に作用する駆動輪の軸方向の力を推定する推定手段を設け、
前記ハブベアリングの状態から駆動輪と路面の接地点に作用する鉛直方向の力を推定する推定手段を設けたことを特徴とするインホイール型モータ内蔵センサ付きアクスルユニット。 - 請求項1において、前記インホイール型モータ内蔵センサ付きアクスルユニットは、駆動輪と路面の接地点に作用する力を減衰して車体に伝える減衰手段を有するサスペンションを介して車体に取付けられ、前記減衰手段は、電動で作動して減衰の程度を変化させるものであり、この減衰手段の減衰の程度を制御する手段に、前記センサの出力が入力されるインホイール型モータ内蔵センサ付きアクスルユニット。
- 請求項1または請求項2において、前記3軸方向の力を測定するセンサの一つとして、前記ハブベアリングの静止側軌道輪に取付けられて、この静止側軌道輪の軸方向歪みを測定する軸方向歪みセンサを設け、この軸方向歪みセンサは、軸方向に沿った軸方向部位と、この軸方向部位に比べ剛性が低くなるように肉厚を薄くしてある径方向部位とでL字形状に構成されるセンサ取付部材を介して、前記静止側軌道輪に取付けられ、前記駆動輪の軸方向の力を推定する推定手段は、前記軸方向歪みセンサの出力から駆動輪と路面の接地点に作用する駆動輪の軸方向の力を推定するものとしたインホイール型モータ内蔵センサ付きアクスルユニット。
- 請求項1ないし請求項3のいずれか1項において、前記3軸方向の力を測定するセンサの一つとして、前記ハブベアリングの静止側軌道輪に対向して取付けられて、この静止側軌道輪の径方向歪みを測定する径方向歪みセンサを設け、前記ハブベアリングは複列の転がり軸受であり、前記径方向歪みセンサを対向させる前記複列の転がり軸受の軸方向位置は、アウトボード側列の転走面よりもアウトボード側の位置とされ、前記鉛直方向の力を推定する推定手段は、径方向歪みセンサの出力から駆動輪と路面の接地点に作用する鉛直方向の力を推定するものとしたインホイール型モータ内蔵センサ付きアクスルユニット。
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PCT/JP2007/000930 WO2008035455A1 (fr) | 2006-09-19 | 2007-08-29 | Ensemble essieu muni de capteurs solidaire d'un moteur-roue |
DE112007002204T DE112007002204T5 (de) | 2006-09-19 | 2007-08-29 | Mit einem Sensor ausgestattete und einen eingebauten radintegrierten Motor aufweisende Achseinheit |
CN2007800344214A CN101516663B (zh) | 2006-09-19 | 2007-08-29 | 内置内轮型电动机的带有传感器的车轴组件 |
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