Research On Angle Encoder And Data Interface System Of XX Radar

Among the first chapter briefed the XX radar principle, a detailed analysisof the XX radar original encoder, data interface and digital guidance system components, functions and technical specifications for the new system developed to provide technical assurance. Radar decomposition encoder used for coarse and fine composition measurement system, mainly by the decomposition device that is cosine Generator, angle encoder circuit and time-base circuit components, will be completed Antenna azimuth position into binary digital form. and 18 binary output. Radar Data Interface System consists of parallel importation interface board, parallel output interface and time-base circuit boards, completion of this radar data to the computer terminal, and receiving guidance computer data. Digital radar guidance system, including distance and angle guide, guide distance from the main data will be sent to rangefinder, Tracking distance locked loop; perspective is the main guide through plug-guide will become digital analog sent to the servo control system antenna rotation.Among the second chapter XX radar right angle encoder, data interface and guide the development of systems for design. All Card were inserted with a taiwanese industrial computer, the software has a modular design.Among the third chapter in the analysis of angle encoder function on the basis of indicators, Design based on the rotation speed change and double R / D converter encoder system; resolver is a variation of angle changes to the measurement of voltage signal components. Here, we are using cosine resolver, stator and rotor have two sets of windings, two sets of stator windings in space mutually orthogonal place, the two sets of rotor windings in space has become orthogonal place, thus ensuring that the output is strictly cosine signals orthogonal. to improve the measurement accuracy is using resolver, Seiki portfolio, Crude Seiki portfolio is the meaning of crude machine angle turn a circle, Seiki angle will turn n circles, Crude machine that is determined by the angle of the rough from Seiki angle to get an accurate location, it had to be rough, Seiki angle to be true combination of mechanical axis angle. Two-speed converters is a small metal shell Packaging mixed monolithic IC, internal contains coarse, both precision resolver to digital converters and for a crude, refined composition and correction of two-speed processor. Rotary thicker machine output signal received two-speed R / D converters rough Channel 4 input CS1 and CS2. CS3, CS4. Seiki Four output signal received two-speed R / D converters proficiency Road 4 input FS1, FS2, FS3 and FS4, two-speed R / D converter output a group output 18 binary signal.Chapter IV of the paper analyzing the data interface functions on the basis of using high-performance computer and communications MOXA common control card, Design of stable performance and reliability of strong data interface systems; Data Interface System consists of computer, Data Acquisition and state boards, modules D conversion boards, time code interface, synchronous serial RS232 card, RS422 synchronous serial cards, Ethernet cards, and other components. Data acquisition card and state data collected from state and radar characters; Time Code plate reception B sample code and 20HZ letter; Industrial Computer Data Processing ;RS232 complete serial communication controller cards complete with a computer terminal data transmission; RS422 serial communication controller cards with the completion of station equipment and data transmission.Among the fifth chapter of the guide designed to achieve the data filtering and smoothing delay extrapolation function. Computer center will guide information through computer terminals XX sent to the radar data interface systems, IPC read guide information from the data directly into the ranger, pitch angle, azimuth data guided by D/A transform evacuations antenna servo drives.Chapter VI of the prototype test the functionality and reality check. According to the design program to create prototype, static testing, and flight test objectives with a reality check, meet the design and application requirements, as confirmed by the scientific research results, practical.