JP2004140995A5 - - Google Patents

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JP2004140995A5
JP2004140995A5 JP2003359454A JP2003359454A JP2004140995A5 JP 2004140995 A5 JP2004140995 A5 JP 2004140995A5 JP 2003359454 A JP2003359454 A JP 2003359454A JP 2003359454 A JP2003359454 A JP 2003359454A JP 2004140995 A5 JP2004140995 A5 JP 2004140995A5
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motor
switch
stop
power
circuit according
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JP2004140995A (ja
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  1. モーターを停止させるために繰り返し開閉する、モーター巻線の両端に接続される停止電力スイッチング素子で構成されること、を特徴とするモーター停止回路。
  2. 前記停止電力スイッチング素子は、FETであること、を特徴とする請求項1記載のモーター停止回路。
  3. 前記FETは、MOSFETであること、を特徴とする請求項2記載のモーター停止回路。
  4. さらに、前記FETに接続され、切断されつつある前記モーターの電力に関して、前記FETをオン・オフさせるパルス列を生成する制御装置を含むこと、を特徴とする請求項2記載のモーター停止回路。
  5. 前記制御装置は、前記パルス列を生成するためのタイマーを含むこと、を特徴とする請求項4記載のモーター停止回路。
  6. 前記制御回路は、前記タイマーの出力する前記パルス列のデューティ比と周波数の少なくとも一方を調節するために前記タイマーに接続される調節回路を含むこと、を特徴とする請求項5記載のモーター停止回路。
  7. 前記パルス列は、パルス幅変調信号を含むこと、を特徴とする請求項6記載のモーター停止回路。
  8. さらに、電力が前記モーターに接続されるときに充電され、前記モーターに対する電力が切断されたときに前記モーター停止回路に電力を供給する、蓄電キャパシタを含むこと、を特徴とする請求項5記載のモーター停止回路。
  9. 前記FETの内部ダイオードは、前記モーター巻線の両端を接続する個別のダイオードの代わりに用いられること、を特徴とする請求項2記載のモーター停止回路。
  10. さらに、閉じた状態で前記モーターを動かすスイッチが開かれるとき、前記停止電力スイッチング素子を繰り返し開閉させるための制御装置を含むこと、を特徴とする請求項1記載のモーター停止回路。
  11. さらに、電力が前記モーターに接続されるときに充電され、前記モーターに対する電力が切断されたときに前記モーター停止回路に電力を供給する、蓄電キャパシタを含むこと、を特徴とする請求項10記載のモーター停止回路。
  12. 前記スイッチは、押下の程度に基づき前記制御装置に信号を供給し、前記制御装置は、前記スイッチの供給する前記信号に応じて前記モーター速度を制御すること、を特徴とする請求項10記載のモーター停止回路。
  13. 前記モーターは、直流モーターであること、を特徴とする請求項1記載のモーター停止回路。
  14. 前記直流モーターは、永久磁石直流モーターであること、を特徴とする請求項13記載のモーター停止回路。
  15. 前記モーターは、コードから電力を供給されるモーターであること、を特徴とする請求項1記載のモーター停止回路。
  16. モーター停止回路であって、
    モーター巻線の両端を接続するFETと、
    前記モーターを停止させるために前記FETをオン・オフさせるパルス列を、スイッチ・オフしつつある前記モーターに対して生成する、前記FETに接続される制御回路と、
    前記モーターへの電力がスイッチ・オンされているときに充電され、前記モーターへの電力がスイッチ・オフされているときに前記モーター停止回路に対して電力を供給する、蓄電キャパシタと、
    で構成されること、を特徴とするモーター停止回路。
  17. 前記FETは、フリー・ホイール・ダイオードとして動作し、個別のフリー・ホイール・ダイオードの代わりに用いられる、前記モーター巻線の両端に接続される内部ダイオードを含むこと、を特徴とする請求項16記載のモーター停止回路。
  18. 前記制御装置は、前記停止電力スイッチング素子に自励パルス信号を出力すること、を特徴とする請求項16記載のモーター停止回路。
  19. 前記自励パルス信号は、パルス幅変調信号であること、を特徴とする請求項18記載のモーター停止回路。
  20. 前記自励パルス信号は、方形波であること、を特徴とする請求項18記載のモーター停止回路
  21. 前記制御装置は、前記停止電力スイッチング素子に出力するパルス幅変調信号のデューティ比と周波数の少なくとも一方を変化させることにより、前記モーターの停止を制御すること、を特徴とする請求項16記載のモーター停止回路
  22. オンであるときに前記モーターを動かすためのスイッチ、制御装置、前記モーター巻線の両端に接続され前記制御装置に接続される停止電力スイッチング素子で構成され、前記制御装置は、前記スイッチがオフであるときに前記モーターを停止させるために前記停止スイッチング素子を開閉させること、を特徴とするモーターの制御回路。
  23. 前記モーターは直流モーターであり、前記スイッチがオンであるときに前記モーターを動かすために前記モーターを直流電源に接続し、前記スイッチがオフであるときに前記モーターを停止させるために前記モーターを前記直流電源から切断し、さらに、前記スイッチがオンであるときに充電され、前記スイッチがオフであるときに前記制御装置及び前記停止電力スイッチング素子に対して電力を供給する、蓄電キャパシタを含むこと、を特徴とする請求項22記載の制御回路。
  24. 前記停止電力スイッチング素子は、半導体スイッチを含むこと、を特徴とする請求項23記載の制御回路。
  25. 前記半導体スイッチは、前記モーター巻線の両端に接続される内部ダイオードを有するFETを含み、前記FETの前記内部ダイオードは、フリー・ホイール・ダイオードとして動作し、個別のフリー・ホイール・ダイオードの代わりに用いられること、を特徴とする請求項24記載の制御回路。
  26. 前記FETは、MOSFETであること、を特徴とする請求項25記載の制御回路。
  27. 前記半導体スイッチは、トライアック、SCR、MOSFET、IGBT、ダーリントン対の少なくとも一つを含むこと、を特徴とする請求項25記載の制御回路。
  28. 前記モーターは、コードから電力を供給されるモーターであること、を特徴とする請求項22記載の制御回路。
  29. 前記モーターは、電池に接続される直流モーターであり、前記モーターは、前記スイッチがオフであるとき、前記電池への接続を維持し、前記モーターを停止させる間に発電される電力が、少なくとも一部は前記電池を再充電するように前記モーターを停止させること、を特徴とする請求項22記載の制御回路。
  30. 前記スイッチは、前記停止電力スイッチング素子も収容するモジュール内に収容されたトリガー・スイッチであること、を特徴とする請求項22記載の制御回路。
  31. 前記制御装置は、前記停止電力スイッチング素子に出力するパルス幅変調信号のデューティ比と周波数の少なくとも一方を変化させることにより前記モーターの停止を制御すること、を特徴とする請求項22記載の制御回路。
  32. 前記制御装置は、前記モーターのモーター速度及び逆起電力の少なくとも一方を測定し、前記モーターのモーター速度及び逆起電力の少なくとも一方に基づき前記モーターの停止を制御すること、を特徴とする請求項31記載の制御回路。
  33. 前記制御装置は、前記停止電力スイッチング素子に自励パルス信号を出力すること、を特徴とする請求項22記載の制御回路。
  34. 前記自励パルス信号は、パルス幅変調信号であること、を特徴とする請求項33記載の制御回路。
  35. 前記自励パルス信号は、方形波であること、を特徴とする請求項33記載の制御回路。
  36. 前記スイッチは、押下の程度に基づき前記制御装置に信号を供給するトリガー・スイッチであり、前記制御装置は、前記トリガー・スイッチの供給する前記信号に応じて前記モーター速度を制御すること、を特徴とする請求項22記載の制御回路
  37. 前記トリガー・スイッチは、前記スイッチの押下の程度に基づき前記制御装置に前記信号を供給するポテンショメーターを含むこと、を特徴とする請求項36記載の制御回路
  38. 電動工具であって、
    モーターを包み込む筺体と、
    前記スイッチがオンであるとき前記モーターを動かすためのスイッチと、
    制御装置と、
    前記モーター巻線の両端に接続され前記制御装置に接続される停止スイッチング素子とで構成され、
    前記制御装置は、前記スイッチがオフであるとき前記モーターを停止させるために前記制御可能なスイッチング素子を開閉させる、
    こと、を特徴とする電動工具。
  39. 前記停止スイッチング素子は、半導体スイッチを含むこと、を特徴とする請求項38記載の電動工具。
  40. 前記半導体スイッチは、前記モーター巻線の両端に接続される内部ダイオードを有するFETであり、前記FETの前記内部ダイオードは、フリー・ホイール・ダイオードとして動作し、個別のフリー・ホイール・ダイオードの代わりに用いられること、を特徴とする請求項39記載の電動工具。
  41. 前記半導体スイッチは、トライアック、SCR、MOSFET、IGBT、ダーリントン対の少なくとも一つを含むこと、を特徴とする請求項39記載の電動工具。
  42. 前記スイッチは、モジュール内に収容されるトリガー・スイッチであり、前記停止スイッチング素子も、前記モジュールに収容されること、を特徴とする請求項39記載の電動工具。
  43. 前記スイッチは、押下の程度に基づき前記制御装置に信号を供給するポテンショメーターを有するトリガー・スイッチであり、前記制御装置は、前記ポテンショメーターの供給する前記信号に応じて前記モーター速度を制御すること、を特徴とする請求項42記載の電動工具。
  44. 前記モーターは直流モーターであり、前記スイッチがオンであるときに前記モーターを動かすために前記モーターを直流電源に接続し、前記スイッチがオフであるときに前記モーターを停止させるために前記モーターを前記直流電源から切断すること、を特徴とする請求項42記載の電動工具。
  45. 前記モーターは、コードから電力を供給されるモーターであること、を特徴とする請求項42記載の電動工具。
  46. さらに、電池及び蓄電キャパシタを含み、前記モーターは、前記スイッチがオンのとき前記電池に接続され前記スイッチがオフのとき前記電池から切断される直流モーターを含み、前記蓄電キャパシタは、前記スイッチがオンのとき前記電池から充電され前記スイッチがオフのとき前記制御装置及び半導体スイッチに電力を供給すること、を特徴とする請求項39記載の電動工具。
  47. ーターを停止させるために、前記モーター巻線の両端に接続される停止スイッチング素子を開閉させることで構成されること、を特徴とするモーターを停止させる方法。
  48. 前記停止スイッチング素子を開閉させることは、前記モーター巻線の両端に接続される半導体スイッチをオン・オフさせることを含むこと、を特徴とする請求項47記載の方法。
  49. 前記半導体スイッチをオン・オフさせることは、それをパルス信号で脈動させることを含むこと、を特徴とする請求項48記載の方法。
  50. 前記半導体スイッチを脈動させることは、それをパルス幅変調信号で脈動させること、及び、停止速度と停止電流の少なくとも一方を変化させるために前記パルス幅変調信号のデューティ比と周波数の少なくとも一方を変化させること、を含むこと、を特徴とする請求項49記載の方法。
  51. 永久磁石直流モーター、スイッチ・オンのとき前記モーターを動かしスイッチ・オフのとき前記モーターを停止させるスイッチ、を有するコードレス電動工具における、前記モーターを停止させる方法であって、前記モーターを停止させるために前記モーター巻線の両端に接続される半導体スイッチをオン・オフさせることで構成されること、を特徴とする方法。
  52. さらに、前記スイッチがオンのとき蓄電キャパシタを充電すること、及び、前記スイッチがオフのとき前記蓄電キャパシタから前記半導体スイッチに電力を供給すること、を含むこと、を特徴とする請求項51記載の方法。
  53. 前記半導体スイッチは、前記モーター巻線の両端に接続される内部ダイオードを有するMOSFETであり、さらに、個別のフリー・ホイール・ダイオードの代わりに前記MOSFETの前記内部ダイオードをフリー・ホイール・ダイオードとして用いることを含むこと、を特徴とする請求項52記載の方法。
  54. コードから電力を供給されるモーター、スイッチ・オンのとき前記モーターを動かしスイッチ・オフのとき前記モーターを停止させるスイッチ、を有する電動工具における、前記モーターを停止させる方法であって、前記モーターを停止させるために前記モーター巻線の両端に接続される半導体スイッチをオン・オフさせることで構成されること、を特徴とする方法。
  55. さらに、前記スイッチがオンのとき蓄電キャパシタを充電すること、及び、前記スイッチがオフのとき前記蓄電キャパシタから前記半導体スイッチに電力を供給すること、を含むこと、を特徴とする請求項54記載の方法。
  56. 前記半導体スイッチは、前記モーター巻線の両端に接続される内部ダイオードを有するMOSFETであり、さらに、個別のフリー・ホイール・ダイオードの代わりに前記MOSFETの前記内部ダイオードをフリー・ホイール・ダイオードとして用いることを含むこと、を特徴とする請求項55記載の方法。
JP2003359454A 2002-10-18 2003-10-20 モーターを停止させるための方法及び装置 Pending JP2004140995A (ja)

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US41935202P 2002-10-18 2002-10-18
US10/647,807 US7023159B2 (en) 2002-10-18 2003-08-25 Method and device for braking a motor

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JP2004140995A5 true JP2004140995A5 (ja) 2006-11-16

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