Development Of Single-Axis Speed Swing Turntable

Inertial gyros, which are universally applied to navigation system of various aircrafts, could reflect not only aerial attitude of aircrafts but also other important guidance information. As a result, it plays a key role in ensuring security and accuracy when controlling. In order to ensure its working reliability, regular checkout is of necessity, and testing inertial gyros with turntable is a commonly method employed in checkout.Current turntable control system usually adopts digital-analog control method. With the development of computer science and photoelectric encoder, numeralization of control system has become the trend for designing turntable control system.This paper focuses on a single-axis speed turntable, generally establishes mechanical and electrical systems in turntable, basing on domestic and abroad research and the acquirement of its predefined function and actual circumstance. This paper emphasizes on introducing the hardware circuits of each composition module's function and the way it realized, discussing in details about the I/O extensive module, the encoder signal processing module, the D/A output module, the keyboard, the LCD display module design and development process.Then, this paper presents an improved T measuring speed method basing on T measuring speed method, and simultaneously realizes speed and angle measuring with two quadrature encoder pulse circuits of TMS320LF2407A. The measuring speed formula is amended based on measuring speed error analysis. In the speed control system, because of the system's low speed and high precision, incremental PID control algorithm is adopted. In the position control system, a dual mode control algorithm is designed, which can not only guarantee the rapidity in the position control, but also realize the small overshoot accurate positioning.Finally, this paper introduces compiling and debugging of the keyboard, the LCD and the computer testing software. At the same time, it completes the encoder's input signal and the D/A output signal experimental debugging. Employing method of trial and error which realizes the PID parameters'setting,...