13-02-2013, 11:33 AM
PC BASED STEPPER MOTOR CONTROL
PC BASED STEPPER.pptx (Size: 64.76 KB / Downloads: 31)
STEPPER MOTOR
A stepper motor (or step motor) is a brushless DC electric motor that divides a full rotation into a number of equal steps.
The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application.
In this project, the stepper motor can be rotated in clock wise and anti-clock wise direction with 5 or 10 steps spin.
This direction can be controlled by giving a command through PC’s hyper terminal tool.
This project is also useful for positioning of Antenna
The rate of data transfer in serial data communication is stated in bps (bits per second) or baud rate.
To allow data transfer between PC and 8051 system without any error, the baud rate of the 8051 system should match the baud rate of the PC’s COM port.
Thus the operation mode and baud rate of the serial port is to be configured.
Once configured, read or write operations can be performed accordingly. LED array is provided to indicate different speed levels and direction.
STEPPER MOTOR CONTROL USING 8051
The project deals with the design and development of hardware and software for 89C51 MCU based stepper motor control system.
The main application of this system is generally used for security and defense applications.
This system has a CCD camera. The direction of the camera is moved right and left directions using stepper motor.
BLOCK DIAGRAM
In this project, the stepper motor can be rotated in clock wise and anti-clock wise direction with 5 or 10 steps spin. This direction can be controlled by giving a command through KEYS’s. This project is also useful for positioning of Antenna.
In order to control the electrical appliances through KEYS, data transfer must be ensured between KEYS and 8051 system.
Here for each key there is separate notation is assigned.
This project uses regulated 5V, 500mA power supply.
7805 three terminal voltage regulator is used for voltage regulation.
Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.