The Delegated Proof of Stake (DPoS) consensus mechanism is the fastest, most effective, most decentralized, and most flexible consensus model. The DPoS consensus uses the power of stakeholders to agree to vote in resolving consensus issues in a fair and democratic manner. However, in a traditional DPoS consensus mechanism, the degree of decentralization is undefined, and the number of agent nodes is fixed in advance. In this paper, a new fixed degree of decentralization for the DPoS consensus mechanism is proposed based on the adjacency vote and the average fuzziness of vague value. Moreover, the degree of decentralization is defined and discussed. As nodes are dynamically added and withdrawn, the total number of nodes in the blockchain changes. The proposed new consensus mechanism can automatically determine the number of agent nodes to be selected, based on the degree of decentralization and the total number of nodes in the blockchain. The adjacency vote and the average fuzziness of vague value are used to select agent nodes, and this method improves the fairness and security of the blockchain. We analyze five agent nodes, selected from 15 nodes, using the balloting distribution results. The feasibility and effectiveness of our new consensus mechanism are confirmed based on two test examples.

委托权益证明（DPoS）共识机制是最快、最有效、最分散、最灵活的共识模型。DPoS 共识利用利益相关者的权力以公平、民主的方式同意投票解决共识问题。但是，在传统的 DPoS 共识机制中，去中心化程度是不确定的，代理节点的数量是预先固定的。在本文中，基于邻接投票和模糊值的平均模糊度，提出了一种新的 DPoS 共识机制的固定去中心化程度。此外，还定义和讨论了权力下放的程度。随着节点的动态添加和退出，区块链中的节点总数会发生变化。提出的新共识机制可以根据去中心化程度和区块链中的节点总数自动确定要选择的代理节点的数量。采用邻接投票和模糊值的平均模糊度来选择代理节点，该方法提高了区块链的公平性和安全性。我们使用投票分布结果分析了从 15 个节点中选出的 5 个代理节点。我们新的共识机制的可行性和有效性基于两个测试示例得到证实。使用投票分配结果从 15 个节点中选出。我们新的共识机制的可行性和有效性基于两个测试示例得到证实。使用投票分配结果从 15 个节点中选出。我们新的共识机制的可行性和有效性基于两个测试示例得到证实。