Generally speaking, the choice of programmable driver can be made according to the system requirements.
The main components required in the basic architecture of the ONK tracking and clipping system are:
Synchronous servo or induction servo motors. The appropriate type and power must be selected based on the system's torque requirements, including factors such as the servo motor's own inertia, efficiency, and frictional losses.
When selecting a motor, the following should be noted:
1) Low inertia
The lower the inertia, the better; otherwise, a lot of torque will be wasted to overcome its own inertia.
2) Appropriate rated speed and reduction ratio
When selecting motor specifications, the reduction mechanism should be considered in conjunction with the motor. The optimal match is when the motor operates at its maximum speed, which is also the maximum reasonable operating speed of the machine's cutter (considering the mechanical load-bearing capacity and practical application requirements). This is especially important when using an induction asynchronous motor with an encoder; a suitable reduction ratio and motor speed configuration must be considered. This is because the torque output efficiency of a typical asynchronous motor is highest near its rated speed range, with relatively lower torque output efficiency at lower speeds. Therefore, if a 1500rpm motor is selected, it will only operate in the approximately 500-600rpm speed range. In this case, the reduction ratio must be changed to allow the motor to operate at 1100-1400rpm, or a 750rpm motor can be used instead, to achieve the appropriate torque output efficiency.
3) If a standard servo motor can be used, it will perform better than using a general induction asynchronous motor.
ONK driver: The maximum current rating of the servo motor must be selected based on the maximum torque required by the system. The driver must have a recovery discharge function, which can be achieved by connecting an external discharge resistor (for models with an internal discharge circuit) or by adding an external brake and then connecting a discharge resistor (for models without a discharge circuit); please consult our technical service personnel for details.
Main linear speed measuring encoder. Selected based on accuracy requirements and mechanical parameters.
When selecting encoder specifications, please note the following:
1) Operating voltage 5V
2) The output section is a line drive, a differential signal, and an incremental type.
3) There are signals A, /A, B, /B.
4) The measurement accuracy must meet the cutting accuracy requirements, taking into account the outer diameter of the measuring wheel and the reduction ratio. If a 1024ppr encoder is used with a 400mm circumference measuring wheel and a speed-up ratio of 1, the measurement accuracy is (400/1024)*2=0.78mm, which is suitable for measurements requiring ±1mm accuracy, but not for measurements requiring accuracy below ±0.8mm. To improve measurement accuracy, the encoder accuracy must be increased, or the speed-up ratio increased, to increase the pulse output per unit length.
Human-Machine Interface: A suitable operating screen can be designed to facilitate data input, action switching, and system monitoring. The above basic components can meet the most direct and economical control requirements of the ONK-LS tracking and editing system.
