Abstract:本实验装置有光学元件、全息图、位移机构和旋转机构等误差,经过慎重选择光路之后,系统只有位移和旋转的误差,这些误差约在λ/540——λ/900量级。

Abstract:This paper has advanced a new kind of method for making wide-angle rainbow-hologram. It differs from Benton's two-step method in two aspect: (1) the replacement of the single slite by the rectanglar aperture, (2) the adoption of image-plane reception. Hence our making hologram is a wide-angle hologram, which has characteristics of a rainbow-hologram, an imaged-hologram and a three dimension hologram. Its images can be reappear by illuminating the hologram with an incandescent lamp at a short distance. This paper will introduce to the reader our optical design, relevant parameters and results of experiments.

Abstract:This paper presents that pumping power change of Nd: YAG laser will induce not only gain change but also loss change. As a result, it induces oscillating mode change, laser cavity unstable, and the complicated change of laser output power. On the basis of a large theoretical calculation and experimental support, the paper shows that the plane-parallel cavity is more suitable for the multimode operation and the plane-convex or concave-convex cavity for the single mode operation

Abstract:In this paper, the elastic-plastic transitional interface in an elastic body under impacting has been analyzed by means of a new experiment method, a satisfied strain field is obtained, hence a reliable basis for the calculating of dynamic yielding stresses is provided.

Abstract:In this paper an expert system concept in AI is introduced to the industrial process control. Specific structures and features of expert control system are discussed. An expert controller directly applicable to industrial process is designed. The simulation of control system indicates that the expert controller has strong information precssing capability and versatile control strategies with desirable control performance. Thus, expert control approach is an effective means towards the realization of intelligent Control.

Abstract:RMS system is a running management system self designed and developed for M304s computer system. Supervisor call (SVC) is one kind of method of communication between user and system in designing of operating system. This article introduces you the way how to resolve the problem in RMS design by using supervisor call function, with brief introduction of system design.

Abstract:This paper advances a new idea for protecting rock around underground excavation, based on the analyese of movements of surrounding rock,then studies the sloting in surrounding rock-a kind of softening technique for surrounding rock by means of BEM and modle tests. It is proved that this method is useful and effective.

Abstract:In this payer , a summary of the recent progress for reseach on dust transportation , dust deposition and turbulent dispersion in mine airways is presented. A mathematical model is provided for deposition and turbulent dispersion of dust in mine airways. The calcuating formula Ex=49.528 a Ua for coefficient of longitudinal turbulent dispersion is derived theroetically .

Abstract:A color image terminal which can be used for submarine acoustic imaging system is introduced in this paper. Imaging signals, data rate above 375 KB/S, can be in real time processed in this system. It can give an insert processing of the imaging signals produced in both Modes C and B. The coordinate can be transformed quickly and in real time when Mode Bworks The luminace information can be turned into false color information by a color coder. All kinds of imaging parameters are displayed on the screen at the same time. The raster scan system is used for the image terminal. The capacity of the image memory is 512k Bit. The characters, parameters and synchronous control signals are given by a microcomputer TP-805.

Abstract:This paper presents a new approach ,to the automatic contingency selection and ranking by the network flow programming (NFP). A complex cost optimisation model based on economy and security, and several simplified models are proposed in the paper. The performance index is the total load curtailment or its weighted value. All the solution algorithms are OKA. The model and its algorithm is tested on IEEE 30-Bus System and the encouraging results are obtained.

Abstract:The paper analyses the relations between closed-loop system dynamic qualities and linear optimal control weighting matrix Q and offers a sensitivity method for selecting weighting matrix Q. As a practical example, a linear optimal supplement excitation control system is designed for a single machine-infinite bus power system using the presented method. Theoretical . analysis and simulation results have shown that the dynamic qulities of the control system are very satisfactory.

Abstract:This paper presents and improved static measurement method for the parameter measurement and calculation of synchronous. By four static-tests of this method all the parameters in the d-axis equivalent circuits of synchronous machines can be determined, and transient and subtransient parameters are calculated. Testing results proves that this method is available in indusirail testing.

Abstract:A straightforward and unified approach for solving the large-scale, faulted power systems is presented in this paper. In contrast .with conventional algorithms, the various changes of topology and impedance of the systems and its boundary conditions of fault can be handled flexibility and effectively in one-step procedure by proposed method, and it is convenient to choose the computational procedure more resonable according to the situation of power systems. One of the noteworthy features of the proposed method is the natural manner to handle mutual effects, and it is easy to design programs. The calculating technique for easy-to-program is given in this paper. It shows that effectiveness of calculating large-scale faulte power systems with topology and impedance changes by the modified current sources.

Abstract:A model and a heuristic algorithm for reliabilty op timi zation in generalized stochastic flow networks are proposed in this paper. The stochastic characteristic of the demands at terminal nodes is considered in the model. The algorithm proposed is powerful and can be applied to optimal planning of transmission capacity for large scale stochastic flow networks, because it can facilitate a fast location of optimal capacity expansion from the information obtained by the last iteration by making full use of the relationships of the k-weak link set and failure events set to the paramsters in generalized stochastic flow networks

Abstract:Based on the principle of direct-current energy feedback and the mode of control, this paper analysis the benefit of energy feedback for the type of test bad with multi-function, then presents a new concept of utilization factor.This paper also put emphasis on analysis of the wide adaptability that features the test bad suitable to different workpiece to be tested whose gear ratio is of very wide range.

Abstract:In this paper, the calculating formulas for partial dynamic balance of crankslider mechanisms are derived in terms of the limear independent vector theory. The driving torque and the optimum selections for partial dynamic balance in drive mechanism of the steeltube cold-rolling machine are carried out. The method in this paper has a universal reference meaning for the partial dynamic balances of crankslider mechanisms.

Abstract:The speed-up of the rolling production makes the effect of rate-sensitive material on the rolling process significant. In this paper the Rigid-viscoplastic F.E.M, has been used successfully to simulate the steady process of plate-rolling of rate-sensitive material. The experimental results of testing the rolling force is in good agreement with the result of computations. The emphasises put on the discussion of the effect of the rolling velocity on the rolling process.Some new results,which are difficult to obtained by other methods, are obtained. The analysis above express that the forward slip increases with increasing of rolling velocity.