| 摘要 |
FIELD: rocket electrical engineering; remote fast automatic control of electromagnets operating under severe conditions. ^ SUBSTANCE: used as sensing element of transducer incorporating metering interval shaper, AND gate, and zero setting unit is electromagnet holding coil; 0 setting input of RS flip-flop is connected to zero setting unit output and 1 setting input, to output of AND gate whose inputs are connected to comparison circuit output and to inverting output of metering interval shaper; input of the latter is connected to electromagnet starting coil and direct output, to input of zero setting unit; such circuit arrangement enables signal detection in voltage across holding coil by comparing first derivative of this voltage with desired value within metering interval shaped in 0.2 to 0.5 of minimal operating time upon energizing starting winding till moment corresponding to guaranteed operating time of electromagnet. ^ EFFECT: enhanced measurement accuracy and reliability of proposed method and device. ^ 2 cl, 3 dwg |
