Load simulation method based on typical load and linear combination thereof

Abstract

The invention discloses a load simulation method based on a typical load and a linear combination thereof. The load characteristics in a working condition are divided into a constant torque load, a constant power load, a square law torque load, a linear law torque load and a first-order differential load; a typical load and a linear combination thereof are used for representing the construction of a twin-trawling experiment platform for a given load torque; the driving motor controller inputs a set reference rotating speed, the torque sensor measures the driving torque, the motor rotating speed of the driving motor is measured, and two parameters are fed back to the driving motor controller; and through theoretical analysis, load coefficients KcT, Kcp, Ksq, K1 and Ka of typical loads in to-be-simulated loads are obtained, the load coefficients KcT, Kcp, Ksq, K1 and Ka are substituted into the formula to obtain Tref, the Tref is input into a load motor controller, the load motor controller controls a load motor, and simulation of applying complex load torque to a driving motor end is achieved. The purpose of simulating the working condition by simply adjusting the coefficient is achieved, the working condition simulation cost is effectively reduced, and the development period is shortened.

Description

technical field [0001] The invention relates to the technical direction of load simulation for power unit testing, and belongs to the field of dynamic testing. More specifically, it relates to a load simulation method based on typical loads and their linear combinations. Background technique [0002] Dynamic performance testing is an essential link in evaluating the performance and reliability of mechanical equipment. When testing the power device, the motor simulated load is generally used to load the device under test, so as to analyze its response characteristics. This electric load simulation technology can not only evaluate the dynamic performance of the power plant, but also simulate the actual operating conditions of the power plant to complete the semi-physical simulation design of the power plant, thereby realizing a comprehensive and systematic test. [0003] In industrial sites, actual roads and other complex environmental conditions, the types of loads are compl...

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Problems solved by technology

[0004] The actual working conditions can be replaced by different torques provided by the motor, but the actual working conditions are more complex, and it is necessary to explore the direct relationship between the motor output torque and the control parameters to meet the requirements of the working condition simulation

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