Design method of micro-impulse measuring system based on pivots for pulsed micro-thruster

Micro-impulse measuring system is the essential experimental support for pulsed micro-thruster development. An universal design method of micro-impulse measuring system based on pivots was put forward. Firstly, based on the second-order vibration system of micro-impulse measurement model, the basic design conditions were brought forward:the impulse measuring range and the corresponding error range, the measuring error range, the displacement sensor range and the corresponding error range. Secondly, according to the relationship between the impulse and the response, the torsional angle measuring method based on the displacement sensor and the impulse instantaneous impacting model, the constraint conditions of the system parameters, such as the measuring arm, the force applied arm, the torsional spring and the moment of inertia, were analyzed. Lastly, the design steps were given according to the relationship between the basic design conditions and the system parameters. The design method is appropriate for the impulse measuring system design for any pulsed micro-thruster, and has good universality and practicability.