Control and Implementation of Positioning System with Symmetrical Topology for Precision Manufacturing

Table 1

Summary of comparative reviews.

Authors	Methodology	Advantage(s)	Limitation(s)
[27] Yeon and Kim	A new CC-Link module utilizing R-IN32M3 to improve the expandability is proposed.	The probabilities of data loss could be managed and interference with equipment control could be decreased.	It requires a lot of pins because of parallel communication.
[28] Cheng and Tseng	Since the cutter contact (CC) velocity along the surface tends to vary, a PC-based real-time motion control network was investigated to achieve the goal of multiaxes synchronous motion.	Both the NURBS interpolator algorithm and SSCNET protocol are successfully realized with the RTX real-time kernel.	The burden computational cost on Windows-OS might cause a problem in traffic communication. Only limited axes are validated.
[29] Dias et al. and [30] Khaliq et al.	This work analyses the performance of industrial communication network by comparing Profinet and Profibus DP in cycle time and jitter.	It is found that Profibus DPV0 is faster and Profinet version IRT has higher determinism.	It does not allow to set fixed cycle time when working. These technologies are not newly developed and not much user utilized them.
[31] Cena and Valenzano, and [32] Liu et al.	A new automatic node discovery protocol for unregistered nodes when connected to the network is investigated.	This research helps to identify the nonconfigured nodes directly and provides a very good degree of compatibility with the existing devices.	Each device is assigned a unique node address and does not permit to alter online.
[33] Chen et al. and [34] Langlois et al.	The system structure evolves one master and slaves connected into a loop. Master device employs 100BASE-TX Ethernet adapter while slave controller utilizes an ASIC or a FPGA with EtherCAT IP core to handle the data frame.	Rapid transmission, numerous slave nodes, diverse manufacturers, and large academic community are benefits of EtherCAT.	It involves the licensed software, genuine equipment to gain the highly precise performance, and complicated data model to understand.