JP6984000B2 - 手押し電動化移動装置 - Google Patents
手押し電動化移動装置 Download PDFInfo
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Description
- Mは移動装置及び移動装置で考えられる荷の質量である。
-μ は実験的に取得され、装置に作用する抵抗力を表現する、装置の縦速度vの関数としての関数である。μは測定される車輪の速度vleft,vright並びに移動装置及び移動装置で考えられる荷の質量Mから取得可能である。このような抵抗力は、特に車輪が地面の上を転がることによってもたらされる転がり摩擦の摩擦力と、あるいは低速度では小さいために無視できる空気抵抗とを特に含む。
- Kは、モータの命令信号Ileft,Irightをモータが発揮する力と組み合わせる関数であり、モータ自身の特性及びトルクを伝える車輪の特性に依拠できる。
- gは重力加速度である。
は、ヨー角速度ωzによって取得できるヨー角加速度である。
- J(M)は、質量Mの関数として変化する、装置1のヨー軸線に沿う慣性モーメントである。質量Mを一定であると考える場合、慣性モーメントJは一定になるであろう。反対に、上述したモジュールに関するモジュール5によって質量Mを見積もる場合、慣性モーメントJ自身と見積質量Mとの間の所定の関係に基づいて慣性モーメントJの見積りを更新できる。一般に、慣性モーメントJは、質量Mが増加するにつれて単調増加する。
- Mは、固定であると想定され又はモジュール5が見積もる、質量である。
- gは重力加速度である。
・乗り物の両側の車輪間に摩擦差が存在する(例えば2つの車輪の一方側の空気が部分的に抜けている場合)
・装置の一方側と他方側との間の車道の差が存在する
・ユーザが発揮する非対称な推力が存在する
Claims (13)
- 電動化移動装置(1)であって、前記電動化移動装置(1)は、
フレーム(101)と、
前記フレーム(101)に接続される第1車輪(102’)及び第2車輪(102’’)と、
前記第1車輪(102’)及び第2車輪(102’’)にそれぞれ接続され、各命令信号(Ileft,Iright)によって命令可能な第1モータ及び第2モータと、
前記電動化移動装置(1)の縦加速度(ax)、ピッチ角速度(ωy)及びヨー角速度(ωz)を検出するように構成され、前記縦加速度(ax)、前記ピッチ角速度(ωy)及び前記ヨー角速度(ωz)を表す信号を提供する慣性測定ユニットと、
前記第1車輪(102’)及び第2車輪(102’’)の速度(vleft,vright)を検出し、前記速度(vleft,vright)を表す信号を提供するように構成されるセンサと、
制御ユニット(2)と、
を備え、
前記制御ユニット(2)は、
前記縦加速度(ax)、前記ピッチ角速度(ωy)並びに前記第1車輪(102’)及び第2車輪(102’’)の前記速度(vleft,vright)を表す前記信号に基づいて、傾斜(α)を見積もるモジュール(3)と、
前記縦加速度(ax)、前記第1車輪(102’)及び第2車輪(102’’)の前記速度(vleft,vright)及び見積もられる前記傾斜(α)を表す前記信号、並びに前記モータの前記命令信号(Ileft,Iright)に基づいて、ユーザが前記電動化移動装置(1)に対して発揮する縦推力(Fx)を見積もるモジュール(4)と、
前記ヨー角速度(ωz)を表す前記信号に基づいて、前記ユーザが前記電動化移動装置(1)に加えるヨートルク(τz)を見積もるモジュール(6)と、
前記傾斜を補正し、見積もられる前記傾斜(α)に基づいて傾斜補正力(Fslope)を決定するように構成されるモジュール(7)と、
見積もられる前記縦推力(Fx)に基づいて推力補助力(Fpush)を決定するように構成される推力増幅モジュール(8)と、
見積もられる前記ヨートルク(τz)に基づいて、操舵補助力(Fz)を決定するように構成されるヨー角増幅モジュール(9)と、
前記傾斜補正力(Fslope)、前記推力補助力(Fpush)及び前記操舵補助力(Fz)に基づいて、前記第1モータ及び第2モータの前記命令信号(Ileft,Iright)を決定するように構成されるトルク割当モジュール(10)と、
を備える、
電動化移動装置(1)。 - 前記フレーム(101)と前記第1車輪(102’)との間及び前記フレーム(101)と前記第2車輪(102’’)との間に動作可能に挿入される第1サスペンション(104’)及び第2サスペンション(104’’)と、
前記第1サスペンション(104’)及び第2サスペンション(104’’)の伸縮(θleft,θright)を検出し、前記伸縮(θleft,θright)を表す信号を提供するように構成されるセンサと、を更に備える、請求項1に記載の電動化移動装置(1)。 - 傾斜(α)を見積る前記モジュール(3)は、前記第1サスペンション(104’)及び第2サスペンション(104’’)の前記伸縮(θleft,θright)を表す前記信号に更に基づいて、前記傾斜(α)を見積もるように構成される、請求項2に記載の電動化移動装置(1)。
- 前記第1サスペンション(104’)及び第2サスペンション(104’’)の前記伸縮(θleft,θright)、前記第1車輪(102’)及び第2車輪(102’’)の前記速度(vleft,vright)、並びに見積もられる前記傾斜(α)を表す前記信号に基づいて、前記電動化移動装置(1)及び前記電動化移動装置(1)が輸送する荷の質量(M)を見積もるモジュール(5)を備える、請求項2又は3に記載の電動化移動装置(1)。
- 前記ユーザが前記電動化移動装置(1)に対して発揮する前記縦推力(Fx)を見積もる前記モジュール(4)が、見積もられる前記質量(M)に更に基づいて、前記縦推力(Fx)を見積もるように構成される、請求項4に記載の電動化移動装置(1)。
- 前記ユーザが前記電動化移動装置(1)に加える前記ヨートルク(τz)を見積もる前記モジュール(6)は、見積もられる前記質量(M)に更に基づいて、前記ヨートルク(τz)を見積もるように構成される、請求項4又は5に記載の電動化移動装置(1)。
- 傾斜を補正する前記モジュール(7)は、見積もられる前記質量(M)に更に基づいて、前記傾斜補正力(Fslope)を決定するように構成される、請求項4−6のいずれか一項に記載の電動化移動装置(1)。
- 前記制御ユニット(2)は、前記第1車輪(102’)及び第2車輪(102’’)の前記速度(vleft,vright)並びに前記ヨー角速度(ωz)を表す信号に基づいて、前記第1車輪(102’)及び第2車輪(102’’)の有効半径(Rleft,Rright)を見積もるモジュール(11)を更に備え、
前記トルク割当モジュール(10)は、前記有効半径を見積もる前記モジュール(11)に接続されるとともに、見積もられる前記有効半径(Rleft,Rright)に基づいてモータの前記命令信号(Ileft,Iright)を補正するように構成される、請求項1−7のいずれか一項に記載の電動化移動装置(1)。 - 1つ以上のハンドル(103)と、前記1つ以上のハンドルに関連付けられ、前記ユーザ(U)の存在を検出し、かかる存在を表す信号を提供するように構成される1つ以上のセンサ(12)とを更に備え、
前記トルク割当モジュール(10)は、前記ユーザの前記存在を検出する前記センサに接続され、前記ユーザの前記存在を検出する前記1つ以上のセンサがユーザ存在信号を供給する場合のみにモータの前記命令信号(Ileft,Iright)を生成するように構成される、請求項1−8のいずれか一項に記載の電動化移動装置(1)。 - 前記制御ユニット(2)は、見積もられる前記傾斜(α)、並びにサスペンションの伸縮(θleft,θright)、及び車輪の前記速度(vleft,vright)を表す前記信号の傾向に基づいて、障害物の存在(P/A)を識別し、出力部で前記障害物の前記存在又は不在を示す信号を提供するように構成され、障害物を通過する操作を識別するモジュール(13)を備え、
前記トルク割当モジュール(10)は、障害物を通過する操作を識別する前記モジュール(13)に接続され、障害物を通過する前記操作を認める前記モジュール(13)が障害物存在信号を供給する場合に前記傾斜補正力(Fslope)を無視するように構成される、請求項2−9のいずれか一項に記載の電動化移動装置(1)。 - 前記ユーザが命令可能であり、前記トルク割当モジュール(10)に結び付けられる少なくとも1つの援助命令(14)を更に備え、前記ユーザが前記援助命令(14)を有効化すると、前記トルク割当モジュール(10)は命令信号(Ileft,Iright)を出力し、前記モータは付加的な駆動トルクを供給する、請求項1−10のいずれか一項に記載の電動化移動装置(1)。
- 前記制御ユニット(2)に接続される、携帯電話又はスマートフォン等の外部装置と通信するモジュールを更に備え、前記制御ユニット(2)の動作パラメータは前記外部装置によって監視可能であり及び/又は設定可能である、請求項1−11のいずれか一項に記載の電動化移動装置(1)。
- ベビーカ、トロリー、商品を輸送するカート、ショッピングカート、ゴルフクラブトロリー、空港トロリー、スーツケース、障害者椅子、車椅子、ストレッチャ、歩行器、病院ベッドからなる群から選択される、請求項1−12のいずれか一項に記載の電動化移動装置(1)。
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