What are the characteristics of electro-hydraulic servo system
Release time:
2020-11-06 09:30
Source:
electro-hydraulic servo systemIt has many advantages, the most prominent of which is fast response speed, large output power and high control accuracy. Therefore, it has been widely used in aviation, aerospace, military, metallurgy, transportation, engineering machinery and other fields. Electro-hydraulic servo technology is the best technical means to achieve dynamic high-cycle fatigue, programmed fatigue and low-cycle fatigue, as well as static constant deformation rate, constant load rate and various analog simulation test systems..
electro-hydraulic servo systemThe features are:
1) The hydraulic actuator has a large power-to-weight ratio and moment of inertia torque ratio (or force-to-mass ratio), has a large power transmission density, and has the characteristics of small size, light weight, and fast response speed. Power control unit;
2) The hydraulic system has high load stiffness and high precision. Since the leakage of the hydraulic lever and actuator is very small, and the bulk elastic modulus of the liquid medium is large, it has a large speed-load stiffness, that is, the reciprocal of the speed-force or rotation speed-torque curve is large. Therefore, it can be used in open loop systems. When used in a closed-loop system, the position stiffness is large, and its positioning accuracy is less affected by load changes;
3) The hydraulic control system can safely, reliably and quickly realize frequent start-stop and braking with load, perform forward and reverse linear or rotary motion and power control, and have a larger speed regulation range;
Products combining electrical or electronic technology with hydraulic transmission and control,electro-hydraulic servo systemIt combines the advantages of electric and hydraulic, resulting in competitive technical characteristics.
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