An Inexpensive Test System of Electromagnetic Mechanism for Suction Characteristic

Based on the control system of industrial configuration software and PLC,an inexpensive suction characteristic of the electromagnetic mechanism test system was designed and developed.Through precision lead screw driven by step motor,the PWM high-speed pulse output function of PLC completed speed control to step motor;with the encoder,the high-speed counting function completed high real-time accuracy measurement of the air gap.The strength sensor achieved the measurement of the electromagnetic suction.Through the RS-232 /485 communication,superior machine real time displayed electromagnetic suction and air gap relational curve.The test result indicated that the system was stable and reliable,the precision was high,the air gap precision could amount to 1%.