... x 300 mm x 120 mm; The power supply: singel-phase AC220V,50 HZ, <100 W. 3. Main composition: dc servo ... motor, dc servo drive, the encoder, the rotary motion device, control circuit module, PC monitoring software.4. Main functions: understand and ... , dc servo typical speed closed-loop control application experiment, dc servo system PC control experiment, dc servo motor velocity loop adjustment loop ...