A multi-mode electronic torque load meter

Abstract

The invention discloses a multi-mode electronic torque load meter, comprising: a Hall sensor used to measure the generator armature port voltage and generator armature current and fed back to the microprocessor through a signal conditioning circuit; a man-machine interaction panel used to select The load mode and the operating parameters required for setting the load calculation module corresponding to different load modes; the microprocessor is used to call the corresponding load calculation module according to the selected different load modes; it is used to call the sensing parameters required by the load calculation module and / or Operating parameters and / or fixed parameters; used to execute the corresponding load calculation module to obtain the duty cycle of the signal sent by the PWM driver chip used to drive and control the DC chopper, and then adjust the current of the generator load circuit. It solves the defect of single load working characteristics, has the functions of automatic adjustment of load intensity and real-time display, and realizes the predetermined torque characteristics of the generator.

Description

technical field [0001] The invention relates to the field of electrical engineering, in particular to a multi-mode electronic torque load meter. Background technique [0002] In the existing electric motor experimental devices, the working mode of the motor unit (motor-DC generator) is widely used, and the DC generator is used as the torque load adjustment device of the prime mover motor. Due to the separately excited DC generator (hereinafter The generator voltage changes synchronously with the speed, and there are three major defects: 1) Its load mechanical characteristics present a slope function law, that is, linear energy consumption load characteristics, and cannot provide other common types of torque loads for experiments, such as constant rotation Torque reaction loads, constant mechanical power loads, fan loads, etc., seriously restrict the effectiveness of motor teaching experiments; 2) The traditional generator load torque adjustment is manually operated through a...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide a multi-mode electronic torque load meter, which aims to solve the single load operating characteristic defect of the existing DC generator load, and provide an electronic torque load meter with multiple load modes optional, With load intensity automatic adjustment function

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