To capture both the system dynamics and network communication events in the large telescope control system (TCS),
and depict the real network control system (NCS) accurately, co-simulation platform must be developed. It is challenge
for very large or large telescope control system because TCS contains thousands of controlled objects. TCS using
Wireless Networks Control System (WNCS) is a trend. Building a distributed control system supported by wireless
networks is a challenging task that requires a new design and simulation approach. This paper has described a cosimulation
framework for telescope wireless networks control system. The co-simulation platform consists of wireless
networks simulation sub-system, actuator simulation sub-system, control simulation sub-system and interface subsystem.
The co-simulation platform can help telescope WNCS designer optimize the design of telescope control system
and improve the performance of the TCS.
With the development of the technology of autocontrol, telescope, computer, network and communication, the control
system of the modern large and extra lager telescope become more and more complicated, especially application of
active optics. Large telescope based on active optics maybe contain enormous force actuators. This is a challenge to
traditional control system based on wired networks, which result in difficult-to-manage, occupy signification space and
lack of system flexibility. Wireless network can resolve these disadvantages of wired network. Presented control system
of telescope force actuators based on WLAN (WFCS), designed the control system framework of WFCS. To improve the
performance of real-time, we developed software of force actuators control system in Linux. Finally, this paper discussed
improvement of WFCS real-time, conceived maybe improvement in the future.
With the development of active optics, control technology and computer, telescope control system (TCS) becomes more
and more complicated. Large telescope control system contains thousands of controlled objects, and large telescopes are
usually built in special location. These are challenge for control system. This paper research advanced control technique
of TCS, presents the topology structure of wireless local area networks control, remote control based on satellites and
wireless portable control and expatiates the real-time design of telescope control units.
Large Telescope Control System (TCS) is a complicated system, which contains thousands of actuators. Wired TCS is
inconvenient to point and track for a large telescope. This paper proposes a TCS based on IEEE 802.11 Wireless Local
Area Network (WLAN), which provides flexibility, reduced infrastructure costs, and greater convenience. The IEEE
802.11 standard MAC protocol includes the DCF and the PCF. The DCF is designed for asynchronous data transmission,
while the PCF is designed for real-time data. The performance of a WLAN with DCF will fall when the number of
wireless station increase in a basic service set (BSS). An advanced modified PCF (APCF) is presented to poll data from
the AP to stations and response data from stations to the AP in CFP. The analysis indicates that APCF can improve
communication performance, and is very suitable for large TCS.
Telescope Control System (TCS) becomes more and more complexity, especially the large telescope control system
of force actuators for deformed mirror and position actuators for modifiable degrees of mirrors. It is very difficult to
connect thousands of sensors, actuators and controller with wired link. This paper presented a large telescope control
system based on wireless smart sensor (WLTCS), connecting wireless sensors and controllers with wireless link,
employing the TCP/IP protocol as communication protocol. Polling access can overcome contention and guarantee every
sensor to communicate with controller in time; using intelligent control methods when some channels are interfered,
multi-hop wireless paths can improve throughput and performance. The analysis and simulation indicate that WLTCS
can greatly reduce complex of implementation and improve communication performance.
The paper discusses one direct drive telescope experiment bed (DDTEB), which is designed to simulate the
modern telescope tracking system. The main task is to find the problem and the reliability which might be met in the real
direct drive tracking system of the telescope and how to handle them. More information and experience will be acquired
and accumulated to use the direct drive technology in the telescope complex motion system of Chinese telescope in the