one. Overview
At present, the printing and paper processing industries have very high requirements for the production speed, overprint accuracy, and the ease of operation of the supporting mechanism. Among them, the leading edge feeding mechanism plays a crucial role in ensuring the speed and accuracy of the entire system. In this regard, Luster provides a solution based on Servo-One's leading edge feed control system, integrated internal cam controller, main encoder information acquisition, dynamic compensation, extended feed, zero reset mechanism Such characteristics, completed the servo drive integrated machine control, to meet the industry's application of high precision, high integration requirements at the same time, designed to provide customers with high product cost performance.
two. Servo-One Introduction
Servo-One is a high-end series of numerous servo drive products from Luster Company. Its maximum rated current capability is 470A, and the position loop scan cycle is 125us. It supports any mainstream solution such as Resolver, Sin/Cos (Hiperface, Endat, SSI) and TTL. Encoder, provides field bus interfaces such as Can-Open DS402, EtherCat, SercosIII, Profibus-DP, Vrong, etc., integrated cam controller and PLC programming environment (scan cycle 1ms), conforms to IEC61131-3 standard and supports CodeSys V3.0 platform It combines the function of self-learning of the flux-weakening speed and inertia of the synchronous motor to provide the optimal dynamic closed-loop regulation performance. The product has powerful functions and wide power coverage, and is the preferred servo drive system to meet the high requirements and high standards of customers.
three. Application program introduction
All the solutions we provide are implemented inside the Servo-One product. No need to add an external controller or control card. The cam can be automatically generated according to the diameter of the printing roller and the feed roller and the paper feed distance. The smooth curve is automatically added to reduce the noise and the motor noise. The impact of the load. Servo-One's 125-μs position loop sweep time and automatically optimized feed-forward control ensure that the position of the cam follows in real time within 1°, while the static position resolution is up to 20 bits, and the single-turn resolution can be up to 1048576 increments. It can ensure that the paper feeding precision under the same rotating speed is within ±1mm, and the internal dynamic compensation function can correct the error at different speeds to meet the customer's different paper feed speed accuracy requirements.
Servo-One supports high-precision single-turn or multi-turn absolute encoders for the motor's feedback encoder and the main encoder mounted on the printing roller (Hiperface absolute encoder encoder is recommended for cost-effective and simple and reliable installation) This eliminates the zero return mechanism on the feed roller side, and can freely set the phase angle at the start of the paper feed, avoiding the cumbersomeness of mechanically adjusting the phase angle. At the same time, Servo-One's internal field-weakening speed function can meet the current problem of low rated speed of high-power servo synchronous motors, which can increase 1.3 times of the rated speed, so as to make up for the shortage of the low rated speed of the motor in high-speed paper feeding. Up to 300 tablets/minute.
four. Program Features
1. Driver integrated machine solution, integrated, high reliability
All the control functions are integrated in the driver program. The built-in PLC scan cycle is 1ms. It can customize the program for customers' special requirements. The whole system is easy to install, simple to debug and user-friendly.
2. Good real-time follow-up performance, low system dynamic error, built-in dynamic compensation, improved accuracy at the same speed and speed
The automatically optimized feedforward control function can reduce the dynamic error to less than 1°, and automatically generate the corresponding five-limit smooth cam curve internally to ensure the accuracy requirement at different speeds. The dynamic compensation function can read the main encoder speed in real time. , And linearly change the initial phase angle and cam length, to minimize the position error caused by mechanical friction changes.
3. Supports single-turn/multi-turn high-precision encoders, automatic zero-finding, automatic adjustment of the starting phase angle
The multi-turn absolute encoder with motor feedback can automatically find the initial zero position after power off, which is fast and accurate, eliminating the zero-seeking mechanism on the feed roller side. At the same time, the absolute value information of the main encoder allows the system to start the paper feeding operation at any phase, eliminating the need to adjust the mechanical phase angle.
4. Synchronous machine weak magnetic growth function
Servo-One integrated internal synchronous magnetic field weakening function, according to the required maximum speed automatically calculates the weak magnetic model of the motor to provide efficient constant power area, to provide a convenient way to increase the main line speed.
5. Dynamic correction function
The internal line speed is read in real time, and the cam coupling angle and length are modified according to different speed segments to minimize the errors caused by external mechanical friction changes.
6. Extended feed function
Taking into account the "tail-ending" phenomenon caused by the long paper length, the program provides a sheet-feed function, which can be switched online and can be changed online according to user requirements.
7. Humane debugging
Servo-One series supports MMC card storage, batch debugging and convenient, user-friendly commissioning software Drive-Manager is very simple in motor identification, closed-loop optimization, online monitoring, field weakening, etc. Customers can install and debug by themselves. Provide customers with a custom programming interface.
Fives. to sum up
The leading-edge paper feeding solution introduced by Luster Company incorporates high-end servo drive and electronic cam curve control technology. While fully considering the on-site process, it integrates the powerful and flexible features of Servo-One products into the interior of Luster products. The advantages of integrated functions are very cost-effective in the solution of the same industry. While guaranteeing reliability, we insist on providing support in customer-defined solutions.
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