Study On Variational Rigidity Servo Operated Loading System Of Acttuator

The servo loading system is an important equipment for the simulated experiment, it can factually reflect the actual performance of the product. In essence it is a kind of passive force servo system. In this paper a actuator servo loading system is designed for the aircraft actuator, its function is reappearance the load which the actuator of the aircraft received, so as to check the performance of the actuator system. Following jobs are mostly finished in this paper:Firstly, this article conducted a thorough investigation and study of the loading system, analyzed the operating principle of electrically loading system with emphasis. To avoid the influence of the additional torque and according to the need for this servo loading system, it had presented a overall design of servo loading system, which uses the spring to achieve actuator loading. It included selection of all devices and design of hardware and layout of software. Secondly, considering the high accuracy and high demand for real-time of the electrically operated system, and following the agility and utility design route, we completed the design of the CPLD controller and the design and debugging of the circuit, which enable the controller good performance of speed and reliability. According to the upper work partial software of the loading system was designed. Combining with the software LabWindows/CVI for Virtual Instrument, an useable and friendly control panel of Virtual Instrument had been designed for the testing parameter in system, and it provided an advantaged condition for the data analysis and deal with of the testing process.Then, by the complex mathematical model of the loading system, it analyzed the problem of the control of the loading system. At last the model of rigidity closed loop system was simulated with Matlab.Finally, this paper used the experiment result to validate the finished function module of the loading system. Experiment result indicated: the software and hardware platform of the variational rigidity servo loading system which had been designed in this paper had simple structure and the convenience of control, it can also remarkably enhance the performance of the servo loading system and achieve the require of variational rigidity loading.