Auxiliary Adjustment Research Articles

Research on the operation control strategy of the cooling ceiling combined with fresh air system

The cooling ceiling combined with independent fresh air system was built by TRNSYS. And the cooling effects of the air conditioning system of an office in Beijing in a summer typical day were simulated. Based on the “variable temperature” control strategy, the operation strategy of “variable air volume auxiliary adjustment” was put forward. The variation of the indoor temperature, the indoor humidity, the temperature of supplying water and the temperature of returning water were simulated under the two control strategies. The energy consumption of system during the whole summer was compared by utilizing the two control strategies, and the indoor thermal comfort was analyzed. The optimal control strategy was proposed under the condition that the condensation on the surface of the cooling ceiling is not occurred and the indoor thermal comfort is satisfied.

A Single-Degree-of-Freedom Self-Regulated Gravity Balancer for Adjustable Payload1

This paper presents a single-degree-of-freedom (single-DoF) gravity balancer that can deal with variable payload without requesting manual or other auxiliary adjustment. The proposed design is an integration of two mechanism modules, i.e., a standard spring-based statically balanced mechanism and a spring adjusting mechanism. A tensile spring is attached to the statically balanced mechanism for balancing the payload, and its installation points are controlled by two cables, which are driven by the spring adjusting mechanism. When different payloads are applied, the spring adjusting mechanism will act to regulate the spring installation points to suitable places such that the overall potential energy of the mechanism and the (variable) payload remains constant within the workspace of the balancer. This therefore suggests the main novelty of the proposed design where the balancer mechanism can automatically sense and respond the change of the payload without manual adjustment to the balancing mechanism. A prototype is built up and successfully tested for the proposed concept.

Hard-Disk Stereo Vision Measurement System Calibration Using Light Plane Constraint

This paper proposed a calibration method of sheet-of-light vision measurement sensor based on light plane constraint. Through capturing 12 images of different direction from homemade circular calibration target, the center of the circle and the light stripe is extracted based on Halcon platform of Germany. The experimental results obtained the intrinsic parameters, extrinsic parameters and radial distortion coefficient of the nonlinear model. At the same time the light plane constraint equation is got based on PCA plane fitting method. The results show that the calibration method is simple and reliable, and the method does not need any auxiliary adjustment. The work laid the better foundation for hard disk planeness vision measurement.

3-Step-Calibration of 3D Vision Measurement System Based-on Structured Light

In structured light 3D vision measurement system, calibration tasks are key steps. Aiming at a special application of line structured light measurement, namely computer hard-disk surface planeness measurement at a precision equipment manufacturing company in Singapore, and combining with the structured light measurement model, determined three calibration tasks of the system. The three calibrating tasks concluded: calibrating the camera parameters; calibrating the light plane pose and calibrating the movement pose. At the same time, according to the three calibration results, measured the computer hard disk, and reconstructed the 3D model of the computer hard disk. The experimental results show that, the whole system of three calibration process is simple and reliable, the method does not need any auxiliary adjustment and realize the measurement accuracy about 0.023 mm. The work laid the better foundation for hard disk planeness vision measurement.

Computer Hard Disk Planeness Vision Measurement System Calibration Based on Light Plane Constraint

This paper proposed a calibration method of sheet-of-light vision measurement sensor based on light plane constraint. Through capturing 12 images of different direction from homemade circular calibration target, the center of the circle and the light stripe is extracted based on Halcon platform of Germany. The experimental results obtained the intrinsic parameters, extrinsic parameters and radial distortion coefficient of the nonlinear model. At the same time the light plane constraint equation is got based on PCA plane fitting method. The results show that the calibration method is simple and reliable, and the method does not need any auxiliary adjustment. The work laid the better foundation for hard disk planeness vision measurement.

Adaptive methods for sequential importance sampling with application to state space models

In this paper we discuss new adaptive proposal strategies for sequential Monte Carlo algorithms—also known as particle filters—relying on new criteria evaluating the quality of the proposed particles. The choice of the proposal distribution is a major concern and can dramatically influence the quality of the estimates. Thus, we show how the long-used coefficient of variation (suggested by [10]) of the weights can be used for estimating the chi-square distance between the target and instrumental distributions of the auxiliary particle filter. As a by-product of this analysis we obtain an auxiliary adjustment multiplier weight type for which this chi-square distance is minimal. Moreover, we establish an empirical estimate of linear complexity of the Kullback-Leibler divergence between the involved distributions. Guided by these results, we discuss adaptive designing of the particle filter proposal distribution and illustrate the methods on a numerical example.

A self-adaptive system with auxiliary adjustment prediction

This paper presents a method for the improvement of a general class of two-adjustment, self-adaptive systems. The technique is based upon the use of existing, external signals. By the incorporation of an auxiliary adjustment prediction matrix, a hybrid scheduling and plant adaptive system is developed. This approach affords a relatively simple method for the possible improvement of a commonly discussed class of self-adaptive systems. It is shown that the over-all system's figure-of-merit can be improved with such a scheme.

A self-adaptive system with auxiliary adjustment prediction

A self-adaptive system with auxiliary adjustment prediction

Selection of measuring equipment for the automation and mechanization of control

Modern mechanical engineering presents special requirements for measuring instruments. These requirements consist of the maximum coupling between the control and production functions. The most suitable in this respect are process-control instruments and trimmers, which are directly involved in the production process and utilize to the maximum the precision characteristics of the machine, thus reducing the auxiliary adjustment time. The best possibilities are provided among the completely automatic devices by the multigroup sorting automatic machines, which exercise control functions and at the same time participate directly in the production process. Multidimensional control devices are the simplest and most precise measuring instruments for an adjusted and stable production process. In many instances they are more reliable than automatic control machines.