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GB2602726B - Method for controlling unmanned transport vehicle, and unmanned transport vehicle - Google Patents

Method for controlling unmanned transport vehicle, and unmanned transport vehicle Download PDF

Info

Publication number
GB2602726B
GB2602726B GB2118769.5A GB202118769A GB2602726B GB 2602726 B GB2602726 B GB 2602726B GB 202118769 A GB202118769 A GB 202118769A GB 2602726 B GB2602726 B GB 2602726B
Authority
GB
United Kingdom
Prior art keywords
transport vehicle
unmanned transport
controlling
controlling unmanned
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
GB2118769.5A
Other versions
GB2602726A (en
Inventor
Wang Hao
Liu Jianzhong
Lei Yi
Qin Yujin
Su Weiwei
He Wen
Bai Jinyan
Wang Xuming
Song Xuefei
Jiao Yue
Sun Bochao
Zhu Kun
Liu Bingquan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tiandi Science and Technology Co Ltd
CCTEG China Coal Technology and Engineering Group Corp
Original Assignee
Tiandi Science and Technology Co Ltd
CCTEG China Coal Technology and Engineering Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tiandi Science and Technology Co Ltd, CCTEG China Coal Technology and Engineering Group Corp filed Critical Tiandi Science and Technology Co Ltd
Publication of GB2602726A publication Critical patent/GB2602726A/en
Application granted granted Critical
Publication of GB2602726B publication Critical patent/GB2602726B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W60/00Drive control systems specially adapted for autonomous road vehicles
    • B60W60/001Planning or execution of driving tasks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D29/00Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W30/00Purposes 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
    • B60W30/18Propelling the vehicle
    • B60W30/182Selecting between different operative modes, e.g. comfort and performance modes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W30/00Purposes 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
    • B60W30/18Propelling the vehicle
    • B60W30/188Controlling power parameters of the driveline, e.g. determining the required power
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W40/00Estimation 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
    • B60W40/12Estimation 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 parameters of the vehicle itself, e.g. tyre models
    • B60W40/13Load or weight
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W50/00Details 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
    • B60W50/02Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/035Bringing the control units into a predefined state, e.g. giving priority to particular actuators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W60/00Drive control systems specially adapted for autonomous road vehicles
    • B60W60/001Planning or execution of driving tasks
    • B60W60/0015Planning or execution of driving tasks specially adapted for safety
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00Starting of engines by means of electric motors
    • F02N11/006Starting of engines by means of electric motors using a plurality of electric motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00Starting of engines by means of electric motors
    • F02N11/08Circuits specially adapted for starting of engines
    • F02N11/0803Circuits specially adapted for starting of engines characterised by means for initiating engine start or stop
    • F02N11/0807Remote means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2530/00Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
    • B60W2530/10Weight
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2540/00Input parameters relating to occupants
    • B60W2540/18Steering angle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2552/00Input parameters relating to infrastructure
    • B60W2552/15Road slope, i.e. the inclination of a road segment in the longitudinal direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W2710/00Output or target parameters relating to a particular sub-units
    • B60W2710/06Combustion engines, Gas turbines
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/2025Particular purposes of control systems not otherwise provided for
    • E02F9/205Remotely operated machines, e.g. unmanned vehicles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/2058Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2062Control of propulsion units
    • E02F9/2066Control of propulsion units of the type combustion engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2200/00Input parameters for engine control
    • F02D2200/50Input parameters for engine control said parameters being related to the vehicle or its components
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2200/00Input parameters for engine control
    • F02D2200/70Input parameters for engine control said parameters being related to the vehicle exterior
    • F02D2200/702Road conditions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2250/00Engine control related to specific problems or objectives
    • F02D2250/18Control of the engine output torque
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00Parameters used for control of starting apparatus
    • F02N2200/08Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00Parameters used for control of starting apparatus
    • F02N2200/08Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
    • F02N2200/0805Detection of vehicle emergency state, e.g. from ABS, ESP, external sensors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00Parameters used for control of starting apparatus
    • F02N2200/12Parameters used for control of starting apparatus said parameters being related to the vehicle exterior
    • F02N2200/123Information about vehicle position, e.g. from navigation systems or GPS signals
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00Parameters used for control of starting apparatus
    • F02N2200/12Parameters used for control of starting apparatus said parameters being related to the vehicle exterior
    • F02N2200/124Information about road conditions, e.g. road inclination or surface
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2300/00Control related aspects of engine starting
    • F02N2300/20Control related aspects of engine starting characterised by the control method
    • F02N2300/2002Control related aspects of engine starting characterised by the control method using different starting modes, methods, or actuators depending on circumstances, e.g. engine temperature or component wear

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
GB2118769.5A 2021-01-06 2021-12-22 Method for controlling unmanned transport vehicle, and unmanned transport vehicle Active GB2602726B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110010114.4A CN112319506B (en) 2021-01-06 2021-01-06 Unmanned transport vehicle control method and unmanned transport vehicle

Publications (2)

Publication Number Publication Date
GB2602726A GB2602726A (en) 2022-07-13
GB2602726B true GB2602726B (en) 2023-02-08

Family

ID=74302321

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2118769.5A Active GB2602726B (en) 2021-01-06 2021-12-22 Method for controlling unmanned transport vehicle, and unmanned transport vehicle

Country Status (3)

Country Link
CN (1) CN112319506B (en)
AU (1) AU2021203405B1 (en)
GB (1) GB2602726B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114718743B (en) * 2022-04-22 2024-02-09 广西玉柴机器股份有限公司 Method for performing intelligent driving auxiliary control according to vehicle load
CN115826480A (en) * 2023-02-20 2023-03-21 山东兴盛矿业有限责任公司 Mining is with long-range bidirectional control system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103867315A (en) * 2012-12-13 2014-06-18 通用汽车环球科技运作有限责任公司 System and method for controlling torque output of an engine when a water pump coupled to the engine is switched on or off
DE102014219221A1 (en) * 2014-09-24 2016-03-24 Robert Bosch Gmbh Method for starting an internal combustion engine of a motor vehicle
DE102019208817A1 (en) * 2019-06-18 2020-12-24 Robert Bosch Gmbh Method, control unit and system for controlling a drive of a vehicle

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1585665A (en) * 1976-07-27 1981-03-11 Lucas Industries Ltd Starter system for an engine
IT1291361B1 (en) * 1996-06-03 1999-01-07 Bosch Gmbh Robert STARTING UNIT OR DRIVING UNIT FOR AN ENDOTHERMIC ENGINE OF A MOTOR VEHICLE
JP4338659B2 (en) * 2005-03-02 2009-10-07 株式会社日立製作所 Method and apparatus for starting internal combustion engine
US7392790B2 (en) * 2006-01-20 2008-07-01 Caterpillar Inc. System and method for resolving crossed electrical leads
JP4389990B2 (en) * 2007-10-05 2009-12-24 トヨタ自動車株式会社 Control device for vehicle drive unit
US8560204B2 (en) * 2008-11-07 2013-10-15 GM Global Technology Operations LLC Method and apparatus for arbitrating torque reserves and loads in torque-based system
CN101975079B (en) * 2010-09-27 2012-04-25 西安科技大学 Carrying robot for coal mine rescue
US9068546B2 (en) * 2012-05-04 2015-06-30 Ford Global Technologies, Llc Methods and systems for engine cranking
US9587576B2 (en) * 2013-03-27 2017-03-07 Ford Global Technologies, Llc Methods and system for improving vehicle operation
US10801425B2 (en) * 2014-10-22 2020-10-13 Ge Global Sourcing Llc System and method for engine control
US20180170394A1 (en) * 2016-12-16 2018-06-21 Delphi Technologies, Inc. Automated vehicle control with payload compensation
US10272924B2 (en) * 2016-12-19 2019-04-30 Baidu Usa Llc Determining control characteristics for an autonomous driving vehicle
US11427087B2 (en) * 2019-02-25 2022-08-30 Ford Global Technologies, Llc Vehicle propulsion torque control systems and methods

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103867315A (en) * 2012-12-13 2014-06-18 通用汽车环球科技运作有限责任公司 System and method for controlling torque output of an engine when a water pump coupled to the engine is switched on or off
DE102014219221A1 (en) * 2014-09-24 2016-03-24 Robert Bosch Gmbh Method for starting an internal combustion engine of a motor vehicle
DE102019208817A1 (en) * 2019-06-18 2020-12-24 Robert Bosch Gmbh Method, control unit and system for controlling a drive of a vehicle

Also Published As

Publication number Publication date
GB2602726A (en) 2022-07-13
AU2021203405B1 (en) 2021-11-11
CN112319506B (en) 2021-03-26
CN112319506A (en) 2021-02-05

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