| 摘要 |
A blender is provided with a microprocessor for controlling energization of the blender drive motor, and a plurality of manually actuated switches for controlling the stepping of the microprocessor through a program which determines the mode and pattern of energization of the drive motor. There are N speed range selection switches, M speed selection switches and a pulse mode switch. Depending on the sequence in which these switches are actuated, the microprocessor controls the drive motor in a manual continuous mode at any one of N x M speeds, a manual pulse mode at any one of N x M speeds or an autopulse mode with any one of three patterns of energization. In the first pattern of energization the motor is energized to run at one of M constant speeds during intervals T1 which are separated by intervals T2 during which the motor is not energized. In a second pattern of energization the motor starts at one of M speeds, the energization being gradually decreased over each interval T1 so that the motor speed decreases. In a third pattern of energization, the motor is initially energized to run at one of M speeds with the energization increasing over each interval T1. Any mode may be programmed for one of M run intervals. All modes and patterns of motor energization are controlled by only M + N + 1 switches (excluding ON/OFF switches) and the sequence in which the switches are actuated.
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