The amount of external output of the linear motor is mainly thrust. Due to the theory, design, manufacture, load and interference of the linear motor, the thrust of the linear motor will fluctuate. Therefore, we must test the linear motor.
The thrust detection of linear motor can reflect the smooth operation of linear motor. Therefore, thrust detection is the key parameter of linear motor detection. The following paper mainly introduces the thrust fluctuation test of Tongmao linear motor.
A common thrust fluctuation test system uses a carriage that is respectively dragged by a ball screw and a linear motor, and the coaxial pair is dragged to test the thrust fluctuation. The rotary motor is connected to the linear motor by the ball screw, so that the interference of the mechanical connection mechanism inevitably enters the fluctuation detection result, and the test result often has a considerable deviation from the expected.
Teamwork Motor adopts a new wave test solution. It uses two linear motors of the same type on the same rail to load each other. Through the data processing of the thrust signals collected under suitable conditions, the thrust characteristics of the linear motor under test are finally obtained. . We use two linear motors that are mutually loaded, including the linear motor to be tested and the linear motor to be tested. Their electrical and mechanical properties are the same, which avoids the torque ripple introduced when the rotating motor is running, and is simple to use. The replacement of the ball screw by the connecting device largely solves the uncertainty and disturbance of the mechanical connection part and improves the transmission efficiency. By using the appropriate control detection method, the fluctuations of the two motors after superposition are in the same phase, and then the thrust fluctuation of the motor to be tested is obtained.
