| 摘要 |
PURPOSE: To provide a vibration controller for a vibrator capable of appropriately controlling drive according to a load without respect to the difference of weight of a placed infant and realizing a desired vibration. CONSTITUTION: This vibration controller is provided with a sensor part 14 and a control circuit 15. By means of the sensor part 14, according to a vibration, first and second pulse signals S143 and S144 with different phases are formed. By means of the control circuit 15, sensor data DT1 and DT2 based on the first pulse signal S143 and the second pulse signal S144 are obtained, a previously set data pattern DP is decoded in accordance with a combination of the sensor data DT1 and DT2, the direction and the change of the vibration is determined from a fluctuation form of the continuous data pattern DP, a previously set target value (pulse count number) is read for driving along a previously set vibration expected value and compared with the pulse count numbers of this time, a previous time, and a second previous time for obtaining a pulse width to be driven in the following timing, and a drive pulse S15 with the obtained pulse width is outputted to a driving circuit 122.
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