Abstract: Aiming at the problems of the low measurement accuracy, incomplete test coverage and complex operation of the dynamic thrust and thrust vector measurement system for orbit and attitude engine at present, the track dynamic thrust and thrust vector measurement system based on the piezoelectric force measurement platform is developed.The optimization design technology of structure parameters of the measurement force, the standard signal generator design technology, the interphase interference processing technology and so on five key technical points have been overcome.The measurement of the continuous pulse force and multi direction force has been realized , the system operation is reliable and convenient, the general requirement is met for the test targets ,the means of dynamic thrust and thrust vector test is provided .

Key words: Orbit and Attitude Engine, Dynamic thrust, Thrust vector