Chongqing Chuanyi Automation Co

Chongqing, China

Chongqing Chuanyi Automation Co

Chongqing, China
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Xu K.-J.,Hefei University of Technology | Fang M.,Hefei University of Technology | Luo Q.-L.,Hefei University of Technology | Wang G.,Chongqing Chuanyi Automation Co. | And 2 more authors.
Jiliang Xuebao/Acta Metrologica Sinica | Year: 2013

An algorithm combing frequency-domain substation with frequency-variance calculation is proposed for the vortex flowmeter with two sensors. A signal processing system is developed with super-low power MCU, and good experimental results are obtained. This type of flowmeter can measure the frequency of the flow-rate accurately even if the power of vortex flow signal is less than that of vibration noise, and run in the mode of low-power and two-wire.


Wu P.,Chongqing University | Wu P.,Chongqing Chuanyi Automation Co. | Lin T.,Chongqing University
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | Year: 2014

Aiming at the high accuracy requirement of identification modeling in sheathed thermocouple sensor accuracy compensation, an approach for the parameter optimization of support vector machine (SVM) kernel function is proposed, which adopts SVM identification modeling combined with quantum genetic algorithm (QGA) that has powerful global searching ability to minimize modeling error. The generalization performance of SVM identification model output response and checking error was tested, and the SVM identification modeling error was compared with that of recursive least square estimation method. The results show that the SVM identification modeling method based on QGA has better generalization performance and modeling precision for sheathed thermocouple sensor identification modeling. The related error compensation experiment proves that the proposed method can meet the requirement of sheathed thermocouple sensor error compensation in modeling precision.


Lin T.,Chongqing University | Wu P.,Chongqing University | Wu P.,Chongqing Chuanyi Automation Co. | Gao F.,Xinxiang Medical University | Yu Y.,Xinxiang Medical University
International Journal of Heat and Technology | Year: 2015

When the quality of liquid ammonia is measured by volumetric flowmeter, the traditional quadratic expression method can't meet the accuracy of temperature compensation in modern coal chemical industry. So the temperature compensation method by support vector machine (SVM) regression is presented, and kernel function parametersof SVM isoptimizedby variable weight particle swarm optimization (PSO). After the performance analysisandcomparisonin PSO, the suitable linear inertia weight method is selected. Experimental results show that the temperature compensation accuracy ofthe SVM method based on the variable weight PSO is significantly higher than that of the traditional quadratic expression method.


Xu K.-J.,Hefei University of Technology | Luo Q.-L.,Hefei University of Technology | Fang M.,Hefei University of Technology | Wang G.,Chongqing Chuanyi Automation Co. | And 3 more authors.
Review of Scientific Instruments | Year: 2011

Some digital signal processing methods have been used to deal with the output signal of vortex flowmeter for extracting the flow rate frequency from the noisy output of vortex flow rate sensor and achieving the measurement of small flow rate. In applications, however, the power of noise is larger than that of flow rate sometimes. These strong disturbances are caused by pipe vibration mostly. Under this condition the previous digital signal processing methods will be unavailable. Therefore, an anti-strong-disturbance solution is studied for the vortex flowmeter with two sensors in this Note. In this solution, two piezoelectric sensors are installed in the vortex probe. One is called the flow rate sensor for measuring both the flow rate and vibration noise, and the other is called the vibration sensor for detecting the vibration noise and sensing the flow rate signal weakly at the same time. An anti-strong-disturbance signal processing method combining the frequency-domain substation algorithm with the frequency-variance calculation algorithm is proposed to identify the flow rate frequency. When the peak number of amplitude spectrum of the flow rate sensor is different from that of the vibration sensor, the frequency-domain subtraction algorithm will be adopted; when the peak number of amplitude spectrum of the flow rate sensor is the same as that of the vibration sensor, the frequency-variance calculation algorithm will be employed. The whole algorithm is implemented in real time by an ultralow power micro control unit (MCU) to meet requirements of process instrumentation. The experimental results show that this method can obtain the flow rate frequency correctly even if the power of the pipe vibration noise is larger than that of the vortex flow rate signal. © 2011 American Institute of Physics.


Wu G.,Chongqing University | Wu G.,Chongqing Communication Institute | Wu P.,Chongqing University | Wu P.,Chongqing Chuanyi Automation Co | And 2 more authors.
Proceedings of the World Congress on Intelligent Control and Automation (WCICA) | Year: 2015

Industrial Ethernet is the movement of industrial control network systems. In order to have an overall understanding of industrial Ethernet for the readers, the paper introduces the development of industrial Ethernet. Then further state the mainstream technology of industrial Ethernet in detail. And finally, discuss the development trend of industrial Ethernet and summarize all the paper. © 2014 IEEE.


Guiqiang C.,Chongqing University | Guiqiang C.,Chongqing Communication Institute | Peng W.,Chongqing University | Peng W.,Chongqing Chuanyi Automation Co. | Youhua Z.,Chongqing Communication Institute
Proceedings of the World Congress on Intelligent Control and Automation (WCICA) | Year: 2015

The paper presents an implement procedure of DD-DU control for the cart-double pendulum. Using human-simulated intelligent control (HSIC) based on sensory-motor intelligent schema, which is made up of perceptive schema, motion schema and associated schema, the controller of DD-DU for the cart-double pendulum is designed. Then the simulation experiment is carried out by Matlab/Simulink platform. The results indicate that this controller can successfully realize DD-DU control for the cart-double pendulum. So it also shows that human-simulated intelligent control theory is very effective to solve complex control system. © 2014 IEEE.


Xia Y.,Chongqing University | Wu P.,Chongqing University | Wu P.,Chongqing Chuanyi Automation Co.
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | Year: 2016

In order to improve the production efficiency and reduce the production cost, in this paper, taking instrument and meter manufacturing industry as the background, aiming at the characteristics of a certain flow meter production workshop, we establish the optimization objective function, propose a multi-processing path FJSP (MPFJSP) model. In order to avoid the interference of the non-feasible solutions in the model, we adopt a new sequential encoding mode and a new method that searches the feasible solution nearby the non-feasible solution and then replaces the non-feasible solution. In order to improve the convergence speed, the particles are divided into a number of small segments, which are updated and disturbed respectively, and the excellent gene is reserved; thus, the PMOPSO algorithm is formed. Compared with other algorithms, the proposed algorithm could find the optimum machining path in every machining path of the workpiece, which verifies the superior performance of the algorithm; it is also verifies that the MPFJSP is more flexible than traditional FJSP, and the obtained solution is better. In the experimental production of the flow meter production workshop, the default cost is decreased by about 12%, and the production efficiency is improved by about 10%. © 2016, Science Press. All right reserved.


Hu J.-J.,Chongqing University | Zhang Y.,Chongqing Chuanyi Automation Co. | Zhou T.,Chongqing Institute of Engineering
ICIC Express Letters | Year: 2015

Based on the pioneer work of Konishi et al., with consideration of the influence of the steady desired speed effect of the two vehicles in front on the traffic flow, a new feedback control car-following model is presented to suppress the traffic jam under open boundary condition. According to the control theory, the condition under which traffic jam can be suppressed is analyzed. Compared with the previous control models, the simulation results show that the stability performance of our model is better than those of the previous models, and it confirms the correctness of the theoretical analysis © 2015 ICIC International.


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Chongqing Chuanyi Automation; Co. | Date: 2013-08-07

Optical instruments; surveying apparatus and instruments; gas testing instruments; fuse wire; contacts, electric; distribution boxes electricity; heat regulating apparatus; pressure indicators; temperature indicators; control apparatus for electric actuators; watt hour meters.

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