| 摘要 |
PROBLEM TO BE SOLVED: To inhibit noise generation and deterioration of durability owing to belt vibration without deteriorating power performance. SOLUTION: The vibration restraining device includes a primary pulley rotation number sensor 410 and a secondary pulley rotation number sensor 420 for detecting rotation speeds associating with vibration generated at a chord part 702 of a metal belt 700 which is not contacting with the pulleys 500, 600 at a side compressed along a forward direction from the primary pulley 500 to the secondary pulley 600 in the metal belt 700 while the pulleys 500, 600 are rotating and a magnet force generation device 440, provided to face against the chord part 702, for generating magnetic force and an ECU 1000 for controlling the magnetic force generated by the magnetic force generation device 440. Based on the detected rotation speed, the ECU 1000 determines that vibration is generated at the chord part 702 and, when the vibration generation is detected, magnetic force is generated by the magnetic force generation device 440. COPYRIGHT: (C)2008,JPO&INPIT
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