Develop Of An Experimental Servo Platform And Research On The System Dynamic

The control strategy of PMSM has great impact for the dynamic and steady-state characteristics of the precision positioning system. The friction, inertia andflexible characteristics of the servo system also have great impact for the dynamicand steady-state characteristics of the precision positioning system. So in-depthstudy of the control strategy and load friction, inertia and flexible has veryimportant theoretical and practical significance.The purpose of this paper is to develop an experiment platform of AC PMSMservo system dedicated to the purpose of the study, so all kinds of research oncontrol strategy and load friction, inertia, flexible characteristics can be studiedon the platform.In order to study friction, inertia and flexible characteristics of the servosystem, it presented design method first of load of friction, inertia, flexible andcalculated design parameters, installed the complete platform.Secondly, the current business servo actuator and controller don't providethe mathematical model; it is not conducive to the servo system. It found themathematical model of PMSM, then found the transfer function model of currentloop, speed loop and position loop, it calculates the control parameters of eachloop controller.The control program is completed with C and assembles language finally;the experiment is carried out on the experiment platform to test the frequencycharacteristics of the current loop, speed loop, the position loop, and tests themechanical resonance frequency of flexible rod, the transfer function of thesystem is certificated.