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逓倍器製品説明資料
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逓倍器製品説明資料
1.
1 クランクポジションパルス逓倍器 CPM-100 実車に搭載済みの自動車部品である シグナルプレートとクランクポジションセンサを活用して 360パルス/回転に、リアルタイムに逓倍
2.
2 エンジンの位置角度計測の現状と課題 リアルタイムに360パルス/回転の位置角度情報を得るため ① ロータリエンコーダを取り付ける ② スリット円盤、センサを取り付ける ①
取付けが困難 ② センサの耐久性が短い ③ 実車での計測が不可能 センサの取り付がで きないエンジンもある
3.
3 課題の検討 エンジンのクランク部を加工して ロータリーエンコーダや スリット円盤を取り付けることなく、 360パルス/回転の信号を作れないだろうか?
4.
4 課題の解決方法 クランクポジションセンサを活用して 360パルス/回転に、へリアルタイムに逓倍
5.
5 入力と出力データ シグナルプレートとクランクポジションセンサ クランクポジションパルス逓倍器 CPM
-100
6.
6 1.360パルス/回転の逓倍信号をリアルタイムに生成 3.TDC信号をリアルタイムに生成 また、任意の角度にオフセット可能 4.様々なシグナルプレートセンサに対応 5.高速F/V出力搭載 2.入力周波数範囲が広い(10Hz~20kHz) 特長 6.本体DC電源駆動
7.
7 入力例 2. 1回転1パルス信号 1. 各種シグナルプレート、 クランクポジションセンサ信号 ・検出器:MPU,MRE ・基本歯:1,4,6,8,12,15,18,20,24,36,40,60 ・欠け歯箇所:1,2,3
・欠け歯数:0,1,2,3,4,6 ・増し歯箇所:1 ・増し歯位置:1/3,1/2,2/3,1/4,3/4 ・クランクプーリーに反射テープを貼って光電センサで検出した信号 ・エンジンタコメータの1回転1パルスの信号
8.
8 技術紹介 1.現在位置認識 (シグナルプレートのパターン認識) 2.入力パルス信号の予測 3.誤差吸収
9.
9 1.現在位置認識 36歯1箇所2歯欠け シグナルプレートパターン認識をし 現在の角度位置を詳密(40MHz)に把握 技術紹介 123 4 5 31 32 33 34 35 36 16 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 2 23 24 25 26 27 28 29 30 回転方向 NE信号なし シグナルプレー ト ピックアップ 34 35 36 1 233
10.
10 技術紹介 2.入力パルス信号の予測 34 35 36
1 233 1回転前 32 T132 T133 T134 34 35 36 1 233 現在 32 T032 T033 T034 次の入力パルス(T034)を1回転前の同一の箇所の 周期変化比を活用して予測する 1回転/2回転毎の角度変動に周期性があることを活用 0° 360° 720° クランク角速度変動 周期比参照 現在の入力 1回転前の 同じ入力
11.
11 技術紹介 3.誤差吸収 入力信号毎にANGLE出力を補正 ANGLE出力 入力信号 現在 逓倍出力パルス数 10 10 8 12
10 10パルス出力前に入力信号がある場合 不足分を次の演算したタイミングまでに出力する
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