The Study Of The Multibar Machine Controlled By Computer

The Multibar Machine based on computer is developed by kinematic analysis of pattern guide bar chain links in multi-guide bar machines.The actuator is complex and manufactured accurately in the exiting mulitbar machine. Stepping motors can turn with certain angel controlled by computer. Ball screw work effectively and synchronously. Stepping motor and ball screw are use to force bar in multibar machine. If there are some position errors, the controlling system compares errors. It is result on experiment that executive framework work correctly.The controlling system is composed by MCS51, program storage and data storage and so on. It affords enough capacity for many data that contain some pattern in order to reduce assistant-process time. The sensor is used as a signal-import. The signal that reflect stepping motor lost step is position feedback thought absolute type encoder. Using this sign, the controlling system drive stepping motor to compensate the lost step. Stepping motor driver has some function. When stepping motor is too hot driver can turn power off. When driver begin to drive stepping motor driver afford high voltage and when driver maintain the stepping motor rotor the driver supple low voltage. Signal-import and signal-export are passed on photoelectric element.Computation method is introduced on raiding and reducing speed of stepping motor. The design process of speed control software is discussed and a particular plan on speed control within short distance is put forth. The method has advantages of feasibility, reliability and smooth. When the process is stopped suddenly the position condition can storage in program. When condition is correct the work can be continuous. The control system is interfered with by electromagnetic means in work. Electromagnetic shielding is used to sure the controlling system work correctly.It is resulted on experiment that controlling system had advantages of feasibility and reliability. Actuator can be easily controlled by controlling system so as to get high precision.