A kind of synthesized resistor is proposed to emulate thermal resistors in an interface simulator.Several key problems of synthesis are discussed in detail

such as the precision improvement of synthesized resister

the voltage scope expansion of resistor's application circuits

the synthesis circuits adaptation for positive or negative voltage

the multi-channel synthesis circuits development on one board

and the nonlinear characteristic curve fitting.The calibration experiments show that

the steady state accuracy of this synthesized resistor is better than 0.02 Ω

and under the control of programming

it has good dynamic resistance simulation capability

therefore

it is very suitable for matter-in-loop simulation experimentation of aero-engine control system.