Rapid testing method of linear motor force constant

Abstract

The invention relates to the technical field of an electronic industry, and particularly relates to a rapid testing method of a linear motor force constant. The rapid testing method of the linear motor force constant includes steps of (1), connecting a reference ground; (2), measuring phase voltages of U, V and W phases of a coil by three channels of an oscilloscope; manually pushing the motor tomove at constant speed, and capturing the wave form of the oscilloscope; recording the voltage peark values Epk-pk in uniform waveform and the time tp of the whole waveform cycle; repeating continuously until finding out the wave form with the most uniform speed and recording; (3), calculating the motor force constant KF and measuring an electrodynamic potential and the linear voltage. The methodfor measuring the linear motor force constant by a reverse electrodynamic potential is a rapid method and has the advantages of rapidly acquiring the motor force constant in the absence of special devices.

Description

technical field [0001] The invention relates to the technical field of the electronic industry, in particular to a method for quickly measuring the force constant of a linear motor. Background technique [0002] The working principle of the linear motor is similar to that of the rotary motor, but it is also different. Taking the permanent magnet synchronous linear motor as an example, the excitation magnetic field of the permanent magnet (stator) interacts with the traveling wave magnetic field generated after the coil (mover) is energized to generate thrust. , since the stator is generally fixed, the mover will move in a straight line along the corresponding direction. [0003] For linear motors, the motor force constant can best reflect the performance of the motor. The motor force constant is the ratio of the thrust of the motor to the current, which reflects the electromagnetic design level of the motor and indicates the ability of the motor to provide thrust. The magn...

AI Technical Summary

Problems solved by technology

The movement of the motor must achieve a certain performance. If the motor force constant is too small, the drive current will be too large. If the current is too large, it will cause the heat dissipation problem of the motor. If the motor force constant is too large, if the driver is not properly selected, the control resolution will be reduced. To achieve the desired performance, design an appropriate motor force constant

In addition, the uniformity of the motor force constant is also an important indicator. The unevenness of the motor force constant will cause different motion accelerations in different places with the same current. For the measurement of the motor force constant, the traditional method needs to build a special test platform, but this The implementation of the method takes a long period of time, the workload is heavy, and special equipment is required

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