At present, the domestic theater stage mechanical control mode is divided into two modes, namely, "axis controller + inverter" mode and "PLC (programmable controller) + high-performance inverter (with speed control and bit control function)" mode , These two models can meet the theater stage mechanical control requirements, therefore, can not simply say which model is more advanced, but should look at which model is more reasonable, more practical, more economical, more conducive to system and equipment maintenance The
1 domestic part of the new and built in the theater of the stage mechanical control
Table 1 for the domestic part of the theater has opened a new stage of mechanical control of the stage list, Table 2 for the domestic part of the stage in the theater of mechanical control mode list. As can be seen from Table 1 and Table 2:
(1) part of the theater opened before 2008, due to the domestic stage mechanical process design and control technology is not very mature, most of the new theater stage mechanical engineering projects mainly by foreign manufacturers or domestic stage machinery manufacturers with foreign manufacturers to complete Most of the stage mechanical control system using "axis controller + inverter" mode, the project cost is relatively high.
Table 1 has been part of the domestic opening of the new theater stage mechanical control mode list
(2) With the rise of the second and third tier cities in the domestic construction of the theater, the domestic stage of mechanical process design and control technology is also rising, the technology gradually mature. After the opening of the new theater stage mechanical engineering project in 2009, most of the domestic stage machinery manufacturers to complete the independent, multi-stage mechanical control system using "PLC + high-performance inverter" mode, the project cost is relatively reduced a lot.
(3) nearly two or three years, most of the domestic construction stage stage mechanical engineering projects by the domestic stage machinery manufacturers bid, the stage mechanical control system is basically "PLC + high-performance inverter" mode. According to statistics, in order to meet the functional requirements, to ensure the safety of the stage machinery system equipment, based on the stage machinery system equipment, the total cost of the basic control in the 30 million to 50 million yuan.
Table 2 part of the domestic construction of the theater stage mechanical control mode list
(4) from the use of management and performance point of view, whether in the stage machinery and equipment positioning accuracy, or in the system equipment security, stability, etc., the stage of the two mechanical control mode can better meet the performance features and Performance requirements. But the "axis controller + inverter" mode compared to "PLC + high-performance inverter" mode, the system equipment maintenance convenience is poor, versatility is also inferior, in the stage mechanical system equipment maintenance costs, equipment updates and The new theater stage mechanical control system equipment, one-time capital investment, will also be larger. This is mainly because the axis controller is a unique manufacturer of stage machinery manufacturers, easy to form technical barriers.
2 from the perspective of the theater manager to talk about three points
(1) At present, Chinas theater construction can be divided into two categories: one is the general theater, multi-purpose theater mainly; one is the theme of the theater, to show the main field. The nature of these two types of the theater, functional positioning, performance forms, performance content, investment and equipment configuration and technical requirements of the stage are different. To a certain extent, the theme theater can be said to be designed for a program to build the theater, the stage mechanical system equipment configuration, changes and other requirements more diverse, richer, more complex, process, safety performance and control accuracy Technical requirements will be higher. General General Theater, due to its versatility and versatility, as well as the diversity of performance forms, the uncertainty of the performance content, there is no need for the performance of a special, very state effects and requirements to set a special stage facilities. The stage of the mechanical system equipment configuration, changes, etc. may be relatively simple or relatively fixed; although the process, safety performance, control accuracy requirements will not be reduced, but the change will be relatively modal. This is conducive to investment control, effectively reducing the operating and maintenance costs
(2) According to the author to understand the situation, the theater stage machinery two control mode in the equipment investment difference nearly doubled. As the two control modes in the system equipment investment difference is relatively large, the domestic theater construction and theater stage mechanical system equipment configuration should consider its investment scale, especially to pay attention to the domestic second and third tier cities theater construction investment scale and ability to meet the use Functional requirements, to ensure the safety of the system equipment on the basis of effective control and reduce the theater construction and theater stage mechanical system equipment one-time investment is conducive to the stage machinery production and processing enterprises in the theater construction projects in the market competition.
(3) from the perspective of the theater manager, hope the theater stage mechanical system equipment more versatile, which is conducive to system equipment maintenance, update, can effectively reduce maintenance costs, control equipment to update the capital investment.