To support the planning of satellite orbit tracking and imaging experiment, and provide effective data for in-orbit test planning，the semi-physical simulation model of ground target tracking is established to simulate the target tracking process. First, this paper analyzes the typical work process of space target tracking system, established the spatial coordinates model of the space target LOS and satellite rendezvous process. Secondly, the mapping relationship between space target motion and tracking system is studied based on the principle of space radial motion principle. The semi-physical simulation’s design principle and the system design scheme of space tracking are given by establishing the radial motion model of the target motion and tracking system. Finally,based on the analysis of the typical space target motion and the design of the semi physical simulation system, the simulation of the space target tracking process with the intersection distance of 60km and the moving speed of 4.2km/s is carried out. The simulation results show that This system can realize continuous tracking of space targets,when the system is stable, the miss distance is less than 0.5 pixels, Azimuth tracking velocity stability is 0.0174°/s, the pitch tracking velocity stability is 0.0161°/s. The test shows that the design principle of the simulation system is correct, and the closed-loop control process can be simulated effectively. This test can provide effective data supports for program analysis and control methods on orbit test, real-time monitoring, analysis and test of synchronous control countermeasures of fault verification.
Aiming at the shortage of the incremental encoder with simple process to change along the count "in the presence of repeatability and anti disturbance ability, combined with its application in a large project in the country, designed an electromechanical switch for generating zero, zero crossing signal. A mechanical zero electric and zero coordinate transformation model is given to meet the path optimality, single, fast and accurate requirements of adaptive fast change algorithm, the proposed algorithm can effectively solve the contradiction between the accuracy and the change of the time change. A test platform is built to verify the effectiveness and robustness of the proposed algorithm. The experimental data show that the effect of the algorithm accuracy is not influenced by the change of the speed of change, change the error of only 0.0013. Meet too fast, the change of system accuracy, and repeated experiments show that this algorithm has high robustness.
KEYWORDS: Detection and tracking algorithms, Sensors, Error analysis, Control systems, Computer simulations, Telecommunications, Control systems design, Precision optics, Systems modeling, Precision mechanics
Consensus problem is a hot area of multi-agent cooperative control, and has produced many research results.Design consensus algorithm is the focus of multi-agent problem research.However, for high precision situations, multi-agent cooperative control needs more effective consensus algorithm.Since most of the dynamic models in reality are second-order systems, this paper provides a consensus algorithm of second-order multi-agent system with integral, and compares it with the traditional consensus algorithms. The algorithm has higher response rate and consensus accuracy.In order to illustrate the effectiveness of the proposed algorithm, a set of simulation results is provided.