Earticle

A device of measuring micro-force was designed, which can measure the maximum loadingcapacityof the insect’s leg which can slide on water surface. The device consists of two parts of micro-force measurement and feed motion control, micro-force measurement accuracy is 0.1μN, micro-analytical balance was chosen to accomplish this function; The smallest linear feed motion speed is 1mm/min, AC servo motor was chosen as the actuator, the servo control system consists of the S3C2410 and drive circuit, etc, fuzzy PID control algorithm has been adopted to achievethis function. Micro analytical balance and servo control system communicate with the computer via RS-232C.