A kind of method of system dynamic calibration is put forward to solve the problem that the measurable force of a small-force measuring system is small and the measuring result disturbed by environment is large relatively.In the dynamic calibration

The standard echelon wave is sent out from signal generator

transmitted by shake implement

and exported separately by calibrated sensor and standand sensor

received by data collection card

analyzed in PC.By researching the system structure and measuring environment

the source of error in the process of calibrating is analyzed and solved additionally

a method of standard trapezoidal wave signal adjustment and display using a kind of software is introduced.Adjusted dynamic calibration equipment and trapezoidal wave can be widely used in many kinds of dynamic calibration of test engineering.