摘要 |
<p>The motor current is sampled at given intervals, and the square of each sampled value is multiplied by the corresponding sampling period. A number of prods. or values obtd. during a cycle of injection are summed. This sum is divided by a value which is obtained by multiplying the square of the maximum current value by the ratio of heat dissipation at the continuous rated current to heat dissipation at the maximum current. If the period of a cycle of injection subtracted from the above resultant value is positive and the motor is somewhat overheated, then the motor is put at rest and set for a longer cycle of injection.</p> |