Research On Intelligent Cycling Platform Control System Based On FO

The resistance adjustment of the traditional riding platform is complex and discontinuous,and the simulation of riding inertia often adopts mechanized methods,and the simulation and adjustment of inertia is difficult and there are certain safety hazards.In view of the shortcomings of the traditional riding platform,this paper designed a magnetoresistive intelligent riding platform,using a permanent magnet synchronous motor(PMSM)to provide riding resistance,to achieve remote control,smooth adjustment of the resistance of the platform and free simulation of inertia.In terms of hardware,TI’s TMS320F28069 MPZT chip was selected as the processor to design and complete the hardware circuit of the intelligent riding table control system.The control system hardware circuit includes a processor,a power module,a Bluetooth module,a data sampling module,and a three-phase bridge drive circuit.On the intelligent riding table control system software,the control algorithm of the control system is designed based on the riding table dynamic model and the PMSM mathematical model.The VECTOR CONTROL(FOC)algorithm is used to control the PMSM,and the motor flux,angular position,speed and torque are collected in real time using the FAST observer.Aiming at the cumbersome adjustment of traditional proportional-integral(PI)controller parameters in engineering,the torque control model is used to establish the mathematical relationship between PI controller parameters and motor parameters,so that the parameter adjustment is faster and more effective.Aiming at the inertia simulation problem,the paper designs a FOC-based speed tracking control algorithm,which simulates the riding inertia through the algorithm,simplifies the mechanical structure of the riding platform,and improves the flexibility of inertia adjustment.Aiming at the braking problem of PMSM,the voltage regulation control algorithm is designed,and the PMSM enters the energy-consuming braking zone is solved by limiting the q-axis current when PMSM is braked,which ensures the normal operation of the control system.Finally,the control system was experimentally verified on the riding bench.By measuring the maximum torque output of PMSM uphill,the maximum sprint speed when going downhill,the inertia simulation value and the control system bus voltage,the software and hardware design of the intelligent riding table control system meet the preset performance indicators.