One Point Detection Method of a Rotary Kiln Axis and its Wireless Sensor Receiving System

Measurement device for rotary kiln axis demands high positioning accuracy, considering the disadvantage of its complex way of measurement and its wired transmission, an on-line measuring method of rotary kiln using the one-point measuring method at each rotary kiln support is put forward. On the basis of it, a wireless transmitting and receiving hardware system is built, and a software is designed to send the information to the PC using the short distance wireless transmission techniques, then the fitting center of the whole axis is formed. The advantages of the method are that measurement and calculation method is simple, and the information transmission is fast.

The New Measurement and Calculation Method for Dynamic Parameters of DC Motor Based on dSPACE System

To investigate the accuracy of modeling DC motor, the platform for measurement and calculation dynamic parameters is built by the Hardware-In-the-Loop(HIL) method based on dSPACE system. The running state of DC motor has to be changed with adjustment of PWM duty-cycle using ControlDesk software. Having got measurement and calculation parameters value of DC motor, we compare the test results with simulation value using the model of DC motor with cascade control in Matlab/Simulink software according to the classical mathematical model. It confirms the established model of DC motor accurately and reliability using new parameters, which provides the basis of more complex control algorithms and also indicates that the feasibility and generalization application value of measurement and calculation method for DC motor.