A new electric servo actuator based on energy recovery and its dynamic energy consumption analysis
Aiming at the problem that the load potential energy is wasted in the load falling stage of the existing electric servo actuator,this paper proposes a new electric servo actuator implementation scheme based on energy recovery.The project uses an accumulator parallel to the transmission system to recover the potential energy dissipated during the load falling stage and provide extra thrust during the load lifting stage.Combined with the theory of power bond graph,a dynamic energy consumption analysis method of mechanical system in complex energy domain is introduced.The dynamic energy consumption model is established,and the comparison simulation test is carried out.The simulation results show that the response time can be reduced by 36.9%,and the motor starting torque can be reduced by 43.3%.When lifting the load,the energy consumption is reduced by about 31%,and 36%of potential energy can be recovered.In the working process,the bearing capacity of the ball screw pair is significantly reduced,which is helpful to reduce friction heat and prolong the service life of the screw.
mechatronics engineeringelectric servo actuatorenergy recoveryaccumulatorpower bond graphdynamic energy consumption analysis
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