Patents by Inventor Shaojun Lu

Shaojun Lu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11972919
    Abstract: A plug-in circuit breaker that includes a housing with a limiting hole, a button mechanism having a closing position and an opening position, and an operating mechanism actuated by the button mechanism. The plug-in circuit breaker includes a locking member arranged inside the housing. The locking member has a locking protruding stand opposite the limiting hole. When the button mechanism is in the closing position, the locking protruding stand of the locking member extends out of the limiting hole and limited by the button mechanism. When the button mechanism is in the opening position, the locking protruding stand of the locking member extends out of the limiting hole to apply an external force on the locking member for retraction. The locking protruding stand of the locking member can retract into the housing, and the locking member limits the button mechanism to perform the closing operation.
    Type: Grant
    Filed: November 14, 2020
    Date of Patent: April 30, 2024
    Assignee: ZHEJIANG CHINT ELECTRICS CO., LTD.
    Inventors: Kejun Lu, Xiangyi Gu, An Yang, Jun Zhu, Shaojun Guo
  • Patent number: 10401840
    Abstract: A method and a system for scheduling parallel machines based on hybrid shuffled frog leaping algorithm and variable neighborhood search algorithm are provided to solve collaborative production and processing of jobs on a plurality of unrelated batch processing machines. The jobs are distributed to machines based on the normal processing time and deterioration situation of the jobs on different machines and are arranged. An effective multi-machine heuristic rule is designed according to the structural properties of an optimal solution for the single-machine problem, and the improved rule is applied to the improved shuffled frog leaping algorithm to solve this problem. The improvement strategy for the traditional shuffled frog leaping algorithm is to improve the local search procedure of the traditional frog leaping algorithm by introducing the variable neighborhood search algorithm. The convergence rate and optimization capacity of the original algorithm are thus improved.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: September 3, 2019
    Assignee: Hefei University of Technology
    Inventors: Xinbao Liu, Jun Pei, Min Kong, Shaojun Lu, Xiaofei Qian, Zhiping Zhou
  • Patent number: 10402404
    Abstract: The present invention discloses a scheduling method and system based on a hybrid variable neighborhood search and gravitational search algorithm. The method includes: 1 setting parameters of the algorithm; 2 initializing an initial solution of the algorithm; 3 performing local search based on a gravitational search algorithm (GSA); 4 updating the initial solution; 5 determining whether an algorithm termination condition is satisfied; if yes, outputting the global optimal solution searched for by the algorithm, otherwise, returning to the step 3. According to the present invention, a near-optimal solution for the continuous batch processing problem based on position learning effect and linear starting time can be obtained, so that an enterprise can make full use of production resources thereof to the utmost extent, and thus reduce production costs and improve the enterprise service level and the customer satisfaction level.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: September 3, 2019
    Assignee: Hefei University of Technology
    Inventors: Jun Pei, Wenjuan Fan, Xinbao Liu, Qiang Zhang, Min Kong, Shaojun Lu
  • Publication number: 20190080244
    Abstract: The present invention relates to a production batch scheduling method and system based on improved variable neighborhood search and differential evolution algorithms as well as a storage medium. The method is executed by a computer, and includes: setting algorithm parameters; building a neighborhood structure; initializing a population; determining an initial solution; calculating a fitness value; locally searching; selecting a male parent; performing individual recessive variation; regenerating the population; updating the initial solution; updating a neighborhood structure of algorithmic search; and judging whether a terminal condition of algorithm execution is met, outputting a global optimal solution of the algorithmic search if so, otherwise, returning to Step 6. The present invention can obtain an approximate optimal solution in regard to a coordinated batch scheduling problem of production and transportation in the case of a manufacturer single machine based on a differential workpiece.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: Jun PEI, Qingru SONG, Xinbao LIU, Shaojun LU, Qiang ZHANG, Wenjuan FAN
  • Publication number: 20190080270
    Abstract: The present invention disclose a parallel machine batch scheduling method and system based on an improved artificial bee colony algorithm in a deterioration situation. With this method, a near-optimal solution for the parallel machine batch scheduling problem with deteriorating jobs and maintenance consideration can be obtained. The model of the present invention is derived from an actual production process with considerations of machine maintenance and batching as well as additional processing and maintenance time for jobs and machines over time in actual production. According to the present invention, the settlement of this problem is conducive to providing reliable decision support for the production and maintenance of an enterprise in complex real production conditions, thus reducing enterprise operation costs, increasing enterprise productivity, and promoting building of a modern smart factory of the enterprise.
    Type: Application
    Filed: September 10, 2018
    Publication date: March 14, 2019
    Inventors: Xinbao Liu, Jun Pei, Shaojun Lu, Min Kong, Xiaofei Qian, Zhiping Zhou
  • Publication number: 20190079975
    Abstract: The present invention discloses a scheduling method and system based on a hybrid variable neighborhood search and gravitational search algorithm. The method includes: 1 setting parameters of the algorithm; 2 initializing an initial solution of the algorithm; 3 performing local search based on a gravitational search algorithm (GSA); 4 updating the initial solution; 5 determining whether an algorithm termination condition is satisfied; if yes, outputting the global optimal solution searched for by the algorithm, otherwise, returning to the step 3. According to the present invention, a near-optimal solution for the continuous batch processing problem based on position learning effect and linear starting time can be obtained, so that an enterprise can make full use of production resources thereof to the utmost extent, and thus reduce production costs and improve the enterprise service level and the customer satisfaction level.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: Jun PEI, Wenjuan FAN, Xinbao LIU, Qiang ZHANG, Min KONG, Shaojun LU
  • Publication number: 20190080271
    Abstract: The present invention discloses a coordinated production and transportation scheduling method and system based on an improved tabu search algorithm, and a storage medium. The method includes batching jobs, initializing algorithm parameters, generating an initial solution, generating a neighborhood solution set, performing mutation, crossover and selection on individuals, determining a candidate solution set; calculating a fitness value of an individual, updating the candidate solution set; updating a tabu list, and determining whether an algorithm termination condition is satisfied; if yes, outputting the global optimal solution; otherwise, returning to the step 4. The present invention is mainly aimed at the coordinated production and transportation batch scheduling problem with multiple manufacturers.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: Jun PEI, Qingru SONG, Xinbao LIU, Shaojun LU, Qiang ZHANG, Wenjuan FAN, Min KONG
  • Publication number: 20180357584
    Abstract: The present invention discloses a method and system for collaborative scheduling of production and transportation in supply chains based on improved particle swarm optimization. The method includes the following steps: 1. setting algorithm parameters; 2. randomly generating an initial population; 3. correcting codes; 4. calculating fitness values and updating the speed and the position of particles; 5. performing tournament selection; 6. performing crossover mutation; 7. updating the population; and 8. determining whether a termination condition is satisfied; if so, outputting a globally optimal solution; if not, returning to the step 3. In the present invention, an approximately optimal solution can be obtained in view of the collaborative scheduling problem of production and transportation considering distributed storage, so that the cost is reduced for supply chains and the service level of supply chains is enhanced.
    Type: Application
    Filed: June 12, 2018
    Publication date: December 13, 2018
    Inventors: Xinbao LIU, Jun PEI, Mei XUE, Shaojun LU, Hao CHENG, Min KONG, Zhiping ZHOU, Lu JIANG
  • Publication number: 20180356802
    Abstract: A method and a system for scheduling parallel machines based on hybrid shuffled frog leaping algorithm and variable neighborhood search algorithm are provided to solve collaborative production and processing of jobs on a plurality of unrelated batch processing machines. The jobs are distributed to machines based on the normal processing time and deterioration situation of the jobs on different machines and are arranged. An effective multi-machine heuristic rule is designed according to the structural properties of an optimal solution for the single-machine problem, and the improved rule is applied to the improved shuffled frog leaping algorithm to solve this problem. The improvement strategy for the traditional shuffled frog leaping algorithm is to improve the local search procedure of the traditional frog leaping algorithm by introducing the variable neighborhood search algorithm. The convergence rate and optimization capacity of the original algorithm are thus improved.
    Type: Application
    Filed: April 20, 2018
    Publication date: December 13, 2018
    Inventors: Xinbao Liu, Jun Pei, Min Kong, Shaojun Lu, Xiaofei Qian, Zhiping Zhou
  • Publication number: 20180356803
    Abstract: A method and system for batch scheduling uniform parallel machines with different capacities based on an improved genetic algorithm are provided. The method is to solve the batch scheduling problem of uniform parallel machines with different capacities. Jobs are distributed to machines by an improved genetic algorithm, and a corresponding batching strategy and a batch scheduling strategy are proposed according to the natural of the problem to obtain a fitness value of a corresponding individual; then, the quality of the solution is improved by a local search strategy; and, a crossover operation is performed on a population based on the fitness of the solution, and the population is continuously updated by repetitive iteration to eventually obtain an optimal solution.
    Type: Application
    Filed: June 12, 2018
    Publication date: December 13, 2018
    Inventors: Xinbao LIU, Jun PEI, Lu JIANG, Shaojun LU, Min KONG, Xiaofei QIAN, Zhiping ZHOU, Mei XUE
  • Publication number: 20180357610
    Abstract: A method and system for collaborative scheduling of production and transportation based on shuffled frog leaping and path relinking algorithms. The method includes the following steps: 1. setting algorithm parameters; 2. generating an initial population; 3. calculating fitness values; 4. grouping the population; 5. performing local search on all groups and updating individuals in groups; 6. performing global search on all groups and updating individuals in groups; 7. gathering all groups to obtain a new population; 8. performing a greedy path relinking algorithm on elegant solutions in the population to obtain an updated population; and, 9. determining termination conditions of algorithms; if so, ending; or otherwise, returning to the step 3.
    Type: Application
    Filed: June 12, 2018
    Publication date: December 13, 2018
    Inventors: Xinbao LIU, Jun PEI, Min KONG, Zhanhui WEI, Shaojun LU, Qingru SONG, Xiaofei QIAN