An autonomous transport vehicle for transporting items in a storage and retrieval system is provided. The autonomous transport vehicle includes at least two drive wheels and a controller, where each drive wheel is independently driven and a drive wheel encoder is disposed adjacent each drive wheel.
An autonomous transport vehicle for transporting items in a storage and retrieval system is provided. The autonomous transport vehicle includes at least two drive wheels and a controller, where each drive wheel is independently driven and a drive wheel encoder is disposed adjacent each drive wheel. The controller, in communication with the drive wheel encoders, is configured to determine a kinematic state of the autonomous transport vehicle within the storage and retrieval system based on incremental data from the drive wheel encoders only and independent of drive wheel slippage.
대표청구항▼
1. An autonomous transport vehicle for transporting items in a storage and retrieval system, the autonomous transport vehicle comprising: at least two drive wheels, each drive wheel being independently driven;a drive wheel encoder disposed adjacent each drive wheel; anda controller in communication
1. An autonomous transport vehicle for transporting items in a storage and retrieval system, the autonomous transport vehicle comprising: at least two drive wheels, each drive wheel being independently driven;a drive wheel encoder disposed adjacent each drive wheel; anda controller in communication with the encoders configured to identify a kinematic state of the autonomous transport vehicle within the storage and retrieval system based only on incremental data from the drive wheel encoders, received from each encoder, and independent of drive wheel slippage. 2. The autonomous transport vehicle of claim 1, wherein the controller is configured to determine command logic for operating the autonomous transport vehicle based on the kinematic state. 3. The autonomous transport vehicle of claim 1, wherein the autonomous transport vehicle includes one or more of a wheel encoder for each drive wheel, an inertial sensor, at least one storage slat sensor and at least one line following sensor, wherein the controller is configured to receive data from the one or more of the wheel encoder for each drive wheel, the inertial sensor, the at least one storage slat sensor and the at least one line following sensor for identifying the kinematic state. 4. The autonomous transport vehicle of claim 1, wherein the controller is further configured to determine a position of the autonomous transport vehicle within the storage and retrieval system independent of drive wheel slippage. 5. The autonomous transport vehicle of claim 4, wherein the controller is configured to determine the position of the autonomous transport vehicle based on a drive wheel having a lowest velocity of the at least two drive wheels when a positive torque is applied by the at least two drive wheels. 6. The autonomous transport vehicle of claim 4, wherein the controller is configured to determine the position of the autonomous transport vehicle based on a drive wheel having a highest velocity of the at least two drive wheels when a negative torque is applied by the at least two drive wheels. 7. The autonomous transport vehicle of claim 4, wherein the controller is configured with an extended Kalman filter for filtering spurious data from each of the encoders. 8. The autonomous transport vehicle of claim 4, wherein the autonomous transport vehicle includes at least one line following sensor configured to sense guide lines on a surface of the storage and retrieval system, the controller being further configured to weight data from each of the encoders based on a guide line deviation signals provided by the at least one line following sensor. 9. The autonomous transport vehicle of claim 4, wherein the controller is configured to verify a position of the autonomous transport vehicle by detecting one or more datum lines on a surface of the storage and retrieval system. 10. The autonomous transport vehicle of claim 1, wherein the autonomous transport vehicle includes at least one releasably lockable caster wheel. 11. A storage and retrieval system comprising: at least one autonomous transport vehicle including at least two drive wheels, each drive wheel being independently driven;a drive wheel encoder disposed adjacent each drive wheel;a controller in communication with the drive wheel encoders of the at least one autonomous transport vehicle and being configured to identify a kinematic state of the at least one autonomous transport vehicle within the storage and retrieval system based only on incremental data from the drive wheel encoders, received from each encoder, and independent of drive wheel slippage;wherein the controller periodically verifies the kinematic state along a travel path of the at least one autonomous transport vehicle wherein the period of verification is based on detection of a position datum having a predetermined position relative to a surface being traversed by the at least one autonomous transport vehicle. 12. The storage and retrieval system of claim 11, wherein the controller is configured to determine command logic for operating the at least one autonomous transport vehicle based on the kinematic state. 13. The storage and retrieval system of claim 11, wherein the at least one autonomous transport vehicle includes one or more of a wheel encoder for each drive wheel, an inertial sensor, at least one storage slat sensor and at least one line following sensor, wherein the controller is configured to receive data from the one or more of the wheel encoder for each drive wheel, the inertial sensor, the at least one storage slat sensor and the at least one line following sensor for verifying the kinematic state. 14. The storage and retrieval system of claim 11, wherein the controller is further configured to determine a position of the at least one autonomous transport vehicle within the storage and retrieval system independent of drive wheel slippage. 15. The storage and retrieval system of claim 14, wherein the controller is configured to determine the position of the at least one autonomous transport vehicle based on a drive wheel having a lowest velocity of the at least two drive wheels when a positive torque is applied by the at least two drive wheels. 16. The storage and retrieval system of claim 14, wherein the controller is configured to determine the position of the at least one autonomous transport vehicle based on a drive wheel having a highest velocity of the at least two drive wheels when a negative torque is applied by the at least two drive wheels. 17. The storage and retrieval system of claim 14, wherein the controller is configured with an extended Kalman filter for filtering spurious data from each of the encoders. 18. The storage and retrieval system of claim 14, wherein the at least one autonomous transport vehicle includes at least one line following sensor configured to sense guide lines on a surface of the storage and retrieval system, the controller being further configured to weight data from each of the encoders based on a guide line deviation signals provided by the at least one line following sensor. 19. The storage and retrieval system of claim 14, wherein the controller is configured to verify a position of the at least one autonomous transport vehicle by detecting one or more datum lines on a surface of the storage and retrieval system. 20. The storage and retrieval system of claim 14, wherein the at least one autonomous transport vehicle includes at least one releasably lockable caster wheel. 21. A method for controlling an autonomous transport vehicle within a storage and retrieval system comprising: receiving incremental data from at least two drive wheel encoders, each drive wheel encoder being disposed adjacent a corresponding one of at least two drive wheels of the autonomous transport vehicle; identifying a kinematic state of the autonomous transport vehicle within the storage and retrieval system based only on incremental data from the at least two drive wheel encoders independent of drive wheel slippage; and periodically verifying the kinematic state along a travel path of the autonomous transport vehicle wherein the period of verification is based on detection of a position datum having a predetermined position relative to a surface being traversed by the autonomous transport vehicle; and determining a command logic for operating the autonomous transport vehicle based on the kinematic state; and issuing the command. 22. The method of claim 21, wherein verifying the kinematic state of the autonomous transport vehicle is further based on data from each of the at least two wheel encoders for each drive wheel, an inertial sensor, at least one storage slat sensor and at least one line following sensor. 23. The method of claim 21, further comprising determining a position of the autonomous transport vehicle within the storage and retrieval system independent of drive wheel slippage. 24. The method of claim 23, further comprising determining the position of the autonomous transport vehicle based on a drive wheel having a lowest velocity of the at least two drive wheels when a positive torque is applied by the at least two drive wheels. 25. The method of claim 23, further comprising determining the position of the autonomous transport vehicle based on a drive wheel having a highest velocity of the at least two drive wheels when a negative torque is applied by the at least two drive wheels. 26. The method of claim 23, further comprising filtering spurious data from each of the at least two wheel encoders with an extended Kalman filter. 27. The method of claim 23, further comprising sensing a guide line on a surface of the storage and retrieval system with the at least one line following sensor and weighting data from each of the at least two wheel encoders based on guide line deviation signals provided by the at least one line following sensor. 28. The method of claim 27, further comprising verifying the position of the autonomous transport vehicle by detecting one or more datum lines on the surface of the storage and retrieval system.
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Maynard, Michael D.; Young, Richard C.; Ward, Ronald E., Article retrieving and positioning system and apparatus for articles, layers, cases, and pallets.
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Benedict, Charles E.; Pfeifer, Brian G.; Yates, Christian A.; Bladen, Scott K.; Dobbs, James R., Automated material handling system with load transfer vehicles.
Parsons Donald F. (West Chester PA) Gress Kyle (Denver PA) Dempsey James M. (Phoenixville PA) Ross Joseph (Downington PA) Parsons William (Boothwyn PA) Parsons Stephen (Devon PA), Automated storage and retrieval system.
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Lloyd Kurt M. (Pewaukee WI) Roth Christopher L. (West Allis WI) Jones LaMar A. (Sandy UT) Jackson Billy R. (North Salt Lake UT) Hrica James P. (Sandy UT) Hueman Dennis G. (New Berlin WI) Kirby Rodney, Automatic storage and retrieval system.
Ennis F. Lyman (376 Manford Way Pasadena CA 91105) Collins Earl R. (801 Craig Ave. La Canada CA 91101), Automatic storage and retrieval system for motor vehicles and the like.
Hoffmann Christopher J. (857 Colonial Ct. Birmingham MI 48009), Automatic storage and retrieval system having an extendible bin extraction mechanism with pop-up tabs.
Reverte, Carlos F.; Thayer, Scott M.; Whittaker, William; Close, Eric C.; Slifko, Adam; Hudson, Edison; Vallapuzha, Subramanian, Autonomous inspector mobile platform.
Starr,Matthew T.; Woodruff,Jennifer L.; Brace,Clark D.; Kumpon,Peter J.; Armagost,Karl M., Data cartridge library operable with a multipiece magazine, drive bay, user interface, an entry/exit port, and universal electronics bay.
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Yardley James V. (Centerville UT) Whatcott Gary L. (Holladay UT) Petersen John A. M. (Bountiful UT) Bloomfield Bryan A. (Bountiful UT) Guest Vaughn W. (Farmington UT) Mottes Rick S. (Roy UT) Forman R, Downward compatible AGV system and methods.
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Schrder Niels (Pinneberg DEX), High-shelf system store for the storage and the removal from the store of roll-shaped material, more particularly paper.
Kroll Charles R. (Delafield WI) Briggs John (New Berlin WI) Jurkowski Keith O. (Waukesha WI) Blom Eric C. (Milwaukee WI), High-speed automatic storage and retrieval system and apparatus therefor.
Lu, Jianbo, Integrated control system for stability control of yaw, roll and lateral motion of a driving vehicle using an integrated sensing system to determine a sideslip angle.
Mountz,Michael C.; D'Andrea,Raffaello; LaPlante,John A.; Lyons, II,David P.; Mansfield,Peter K.; Amsbury,Burl W., Inventory system with mobile drive unit and inventory holder.
Bodin,William Kress; Masterson,Michael Lee; Watt,Stephen James, Item position indicator and optimized item retrieval for a sensor equipped storage unit.
Duncan L. Scot (North Field OH) Germuska Richard W. (Brunswick OH) Kral Stephen L. (Garfield Heights OH) Lasecki Robert R. (Eastlake OH) Riley Michael W. (Strongsville OH), Materials handling system.
Rose ; Jr. Malcolm F. (Nashville TN) Tyree ; Jr. Charles B. (Mt. Juliet TN) Dodson James D. (Nashville TN) Bennett Terry L. (Nashville TN), Method and apparatus for handling glass sheets.
Vainio Frans (Karhutie 6 O SF-02400 Kirkkonummi FIX) Hilber Walther (Griessbergweg 3 D-7142 Marbach DEX), Method and apparatus for storing paper rolls in a storage shelving.
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Lubbers LeRoy (Grand Rapids MI) Stubbs William K. (Grand Rapids MI) Zollinger Howard A. (Ada Township ; Kent County MI), Multi-aisle warehouse system with mobile lift having control means for an article transfer vehicle.
Francis, Robert C.; McGee, James P.; Sainati, Robert A.; Sheehan, Jr., Richard L.; Tong, Sai-Kit K., Object tracking and management system and method using radio-frequency identification tags.
Lichti ; Sr. Robert (Lake Almanor Peninsula CA) Bernard ; II Clay (Pt. Richmond CA) Perry Daniel C. (San Jose CA) Lukken Stanley H. (San Francisco CA), Organizer system and method for a rotatable storage structure.
Yardley James V. (Centerville UT) Whatcott Gary L. (Holladay UT) Petersen John A. M. (Bountiful UT) Schutten Herman P. (Milwaukee WI), Proportional position-sensing system for an automatic guided vehicle.
Riley David M. (Garland TX) Olson Curtis W. (Plano TX) Williamson Jeffrey S. (Carrollton TX) Attard Brian M. (Allen TX) Pratt Michael K. (Plano TX), Rack lift assembly.
Kantola, Juhana; Rapila, Tero; Halkola, Teppo; Raevaara, Vesa; Kortesmäki, Jyrki, System and a method for manipulating a cassette used in storage by means of a transfer device.
Peshkin, Michael A.; Colgate, J. Edward; Santos-Munne, Julio; Meer, David; Lipsey, James; Wannasuphoprasit, Witaya; Klostermeyer, Stephen H., System and architecture for providing a modular intelligent assist system.
Ogawa Hiroshi (Aichi JPX) Miyazaki Yasuyuki (Aichi JPX) Yoshida Susumu (Kakamigahara JPX) Sasaki Shinichi (Nagoya JPX), System for automatically controlling movement of unmanned vehicle and method therefor.
Bernard ; II Clay (Richmond CA) Lichti ; Sr. Robert D. (Lake Almanor Peninsula CA) Lukken Stanley H. (San Francisco CA) Perry Daniel C. (San Jose CA), System for delivery.
Goncalves,Luis Filipe Domingues; Karlsson,L. Niklas; Pirjanian,Paolo; Di Bernardo,Enrico, Systems and methods for controlling a density of visual landmarks in a visual simultaneous localization and mapping system.
Karlsson,L. Niklas; Pirjanian,Paolo; Goncalves,Luis Filipe Domingues; Di Bernardo,Enrico, Systems and methods for using multiple hypotheses in a visual simultaneous localization and mapping system.
Gerald A. Isaacs ; Luiz C. Harres ; John W. Kulas ; Joseph C. Rotenberry ; Kenneth A. McKee ; Lynn V. Hill ; Mark L. Carlile ; Richard C. Hickey ; Charles M. Combs ; Harold G. Burkett, Jr., Transfer of cartridges containing flat articles.
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