城市污水处理过程中,降低能耗具有重要意义。基于污水处理1号基准模型(Benchmark Simulation Model No.1,BSM1),设计5组线性自抗扰控制方案,获得了针对污水处理过程的线性自抗扰控制的有效参数整定方法;同时,根据活性污泥法工艺,确定影...城市污水处理过程中,降低能耗具有重要意义。基于污水处理1号基准模型(Benchmark Simulation Model No.1,BSM1),设计5组线性自抗扰控制方案,获得了针对污水处理过程的线性自抗扰控制的有效参数整定方法;同时,根据活性污泥法工艺,确定影响污水处理水质和能耗的主要因素,并分析了各种控制方案下的出水水质和能耗,获得了污水处理的优化控制方案。仿真结果表明,在保证出水水质指标的前提下,利用线性自抗扰控制方法合理控制污水处理工艺中的硝化和反硝化反应可有效降低污水处理的能耗,为工程应用提供了思路。展开更多
In order to improve the edge detection precision of miniature parts in microscopic field of viewa sub-pixel edge detectionalgorithm combining non-orthogonal quadratic B-spline wavelet transform algorithm and Zernike m...In order to improve the edge detection precision of miniature parts in microscopic field of viewa sub-pixel edge detectionalgorithm combining non-orthogonal quadratic B-spline wavelet transform algorithm and Zernike moment algorithm is proposed.Non-orthogonal quadratic B-spline wavelet transform algorithm is adopted to get the pixel edge of miniature parts?andthe moment invariant of Zernike moment algorithm is used for refining the pixel edge to get sub-pixel edges.A real-time detectionsystem based on the proposed algorithm for miniature parts is established.The general system structure and operational principle are given,the real-time image acquisition and detection are completed,the results of edge detection are analyzed and the detection precision is evaluated.The results show that parts size can be0.01-10mm and the detection precision reaches0.01%-0.1%.Therefore,the edge of the miniature parts can be accurately identified and the detection precision can be improved to sub-pixel level,which meets the requirements of miniature parts precision detection.展开更多
文摘城市污水处理过程中,降低能耗具有重要意义。基于污水处理1号基准模型(Benchmark Simulation Model No.1,BSM1),设计5组线性自抗扰控制方案,获得了针对污水处理过程的线性自抗扰控制的有效参数整定方法;同时,根据活性污泥法工艺,确定影响污水处理水质和能耗的主要因素,并分析了各种控制方案下的出水水质和能耗,获得了污水处理的优化控制方案。仿真结果表明,在保证出水水质指标的前提下,利用线性自抗扰控制方法合理控制污水处理工艺中的硝化和反硝化反应可有效降低污水处理的能耗,为工程应用提供了思路。
基金Beijing Higher Education and Teaching Project(No.2014-ms148)
文摘In order to improve the edge detection precision of miniature parts in microscopic field of viewa sub-pixel edge detectionalgorithm combining non-orthogonal quadratic B-spline wavelet transform algorithm and Zernike moment algorithm is proposed.Non-orthogonal quadratic B-spline wavelet transform algorithm is adopted to get the pixel edge of miniature parts?andthe moment invariant of Zernike moment algorithm is used for refining the pixel edge to get sub-pixel edges.A real-time detectionsystem based on the proposed algorithm for miniature parts is established.The general system structure and operational principle are given,the real-time image acquisition and detection are completed,the results of edge detection are analyzed and the detection precision is evaluated.The results show that parts size can be0.01-10mm and the detection precision reaches0.01%-0.1%.Therefore,the edge of the miniature parts can be accurately identified and the detection precision can be improved to sub-pixel level,which meets the requirements of miniature parts precision detection.
