Font Size: a A A

Study On The Servo System Of The Airborne (Shipborne) Target's Real-value Measurement Equipment

Posted on:2005-05-23Degree:DoctorType:Dissertation
Country:ChinaCandidate:J LiFull Text:PDF
GTID:1102360122472141Subject:Mechanical Manufacturing and Automation
Abstract/Summary:PDF Full Text Request
With the design and realization of the servo system of the airborne (shipborne) target's real-value measurement equipment as the background, and with a view to the especial problems which have to be faced with in servo control system (that is the bad condition, contradiction between the weight and the power and the disturbance of the carrier), it is difficult to reach the high stabilization precision and the tracking precision by traditional control technique, so by means of refer to a great deal of references and base on the summary of the domestic and overseas designing schemes, control technique adapted to the airborne (shipborne) equipment is brought forward. Theoretical analysis and researches are presented in this dissertation and are applied to the practical design and realization of the airborne (shipborne) real-value measurement servo controller.At first, according to the concrete requirement of the servo control system, a collective scheme, which provide guarantee to meet the requirements of the global performance, is established. In this scheme, the structure of gimbal and the torque motor driven mode are adopted, and angle measurement is accomplished by inductosyn and velocity measurement is accomplished by dynamically tuned gyro respectively. Based on this collective scheme, every composing element's mathematical model of the system is derived in detail, so the whole mathematical model of the servo system about the airborne (shipborne) target's real-value measurement equipment is established.To fulfill the dynamic requirements of the system, double loops control system with velocity stabilization loop and tracking loop is applied. According to the actual situation and performance requirements, how to impair the influence of the disturb torque and the uncertainty of the system object model and how to improve stabilization and tracking accuracy are the principal difficulties in this paper. To solve these problems, a method by using mutative-plus and high-order compensation is brought forward and design by adopting H∞ mixed sensitivity method in the velocity loop, then the weighting function selection is discussed, and the concrete selection principles are given in details. The conclusion can be applied not only in servo system design of this system, but has sense to general servo system design as well. Non-linear square-lag compensation Anti-Windup design method, which is easily realized in engineering practice, is brought forward to the Windup problem caused by saturation in system. The emulation results prove the feasibility of these methods.Based on the decision of totally digital control strategy of the airborne (shipborne) target's real-value measurement equipment, hardware and software realization structures of the computer control system for the servo system is given. Finally, According to the above theoretical results and the obtained corresponding servocontroller, the servo control system is concretely realized and debugged. The experimental results of the target's real-value measurement equipment prove the effectiveness and feasibility of these methods. Every index of the system meets or surpassed the performance requirements. Now, the equipment is tested and used by the user.
Keywords/Search Tags:target's real-value measurement equipment, uncertainty, high-order compensation, mixed sensitivity design
PDF Full Text Request
Related items