Rotating load simulation device

Abstract

The invention discloses a rotating load simulation device. Four guide rods are evenly distributed on the circumference of a rotating shaft R, heavy blocks with the equal mass are installed on every two guide rods symmetric about the rotating shaft, the rotating inertia relative to the rotating shaft is simulated through the mass sum of the heavy blocks on the four guide rods, and the product of inertia under the dynamic unbalance condition is acquired by adjusting the distances between the combination mass centers of the heavy blocks on the symmetric guide rods; the friction moment of a shafting is simulated by controlling excitation currents of a magnetic powder brake. No complex control system is adopted in the rotating load simulation device, the structure is simple, inertia characteristics and friction moment are adjusted conveniently, simulation accuracy is high, and universality is good.

Description

technical field [0001] The invention relates to the technical field of motor and servo mechanism testing, in particular to a rotating load simulation device with adjustable load characteristics. Background technique [0002] The loads of motors and servo mechanisms in actual applications are complex and changeable, and considering that the actual production process cannot be tested under real loads, a system that can simulate mechanical loads in actual applications is provided is required. [0003] At present, the simulation of mechanical load mainly includes three methods: inertia disk, electric simulation, and electro-hydraulic simulation: the manufacturing cost of inertia disk is high, the accuracy of inertia simulation is poor, and it cannot be adjusted to meet the test requirements of different motors or servo mechanisms; electric simulation is to use The conversion characteristics of electrical energy to mechanical energy of the motor, load the test motor or servo mec...

AI Technical Summary

Problems solved by technology

[0002] The loads of motors and servo mechanisms in actual applications are complex and changeable, and considering that the actual production process cannot be tested under real loads, a system that can simulate mechanical loads in actual applications is provided is required

[0003] At present, the simulation of mechanical load mainly includes three methods: inertia disk, electric simulation, and electro-hydraulic simulation: the manufacturing cost of inertia disk is high, the accuracy of inertia simulation is poor, and it cannot be adjusted to meet the test requirements of different motors or servo mechanisms; electric simulation is to use The conversion characteristics of electrical energy to mechanical energy of the motor, load the test motor or servo mechanism by means of electronically controlled torque, based on the electric model, obtain the loading torque according to the speed change and the actual load mechanical characteristics, and quickly compensate the load motor caused by the speed change The counter electromotive force not only needs real-time calculation, but also requires a complex control system, and its accuracy depends on the precision of the control; the electro-hydraulic simulation consists of two parts: driving and loading, and the electronic control element is a hydraulic cylinder, which has a wider range than the electric simulation. Working frequency and larger output torque, but there are also disadvantages of poor simulation of inertial loads and frictional loads

In addition, electrodynamic simulation and electrohydraulic simulation cannot realize the simulation of dynamic unbalance characteristics of mechanical loads

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