Speed Synchronization of Multiple Motors in Textile & Steel Mills
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Date
2015-12-22T07:25:36Z
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Abstract
The aim of this project is synchronization of multiple motors using wireless technology. This
project uses radio frequency to synchronize motor speeds. This is applicable to many
industries like textile mills, steel plants, paper plants wherein all the motors used on conveyor
are desired to be synchronized. For example, in textile mills where multiple motors work
simultaneously on a conveyor belt to draw clothes, it is essential that all the motors there
should run at same speed, so that balanced tension is achieved to avoid clothes getting
damaged. In this project motors are wirelessly synchronized to make the differential speed
error among multiple motors to zero. One motor acts as transmitter and all the rest as
receivers. Thus, if a particular speed is set in the transmitter then all other motors speed
would be matched to the same speed of the main motor. The mode of communication is radio
frequency. BLDC motors used operate on the basis of PWM control. Each motor has a closed
loop feedback mechanism providing RPM reference by a shaft mounted IR sensor
arrangement whose output is fed to the controller in the circuit. A display unit displays the
full speed and one can enter the desired percentage with help of a keypad to obtain the
required speed for all the motors. The pulse width output from the microcontroller would be
automatically adjusted to maintain the DC power to the motor such that the entered speed
percentage matches the running RPM. The above operation is carried out by using one opto
isolator and a MOSFET for driving the BLDC motor duly interfaced from the
microcontroller. In various stages of operations motors have to rotate at different speeds, so if
we change the speed in transmitting motor then rest of the motors are adjusted accordingly.
The whole operation is made simple by using this technology. Manpower and time is also
saved in this system. The future works include giving intelligence to the whole system like if
any of the motor senses any fault, the whole system will shutdown
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Speed Synchronization of Multiple Motors in Textile & Steel Mills, Vivek Kumar Singh, Ankur Shukla, Ankit Kumar, Anil Kumar Rajak