Characteristics of Controlled Bridge Circuit and Its Application in Magnetic Field Induction Measurement

The article designs a new type of bridge circuit with a controlled source—when the resistance on the bridge arm of the controlled source bridge circuit meets the bridge balance condition, and the bridge branch contains only one Current-Controlled Current Source (CCCS), a Voltage-Controlled Current Source (VCCS), a Current-Controlled Voltage Source (CCVS), or a Voltage-Controlled Voltage Source (VCVS), the circuit is called a controlled bridge circuit, which has the characteristics of bridge balance. Due to the relationship between the controlled source and the bridge arm, the sensitivity of the components on the bridge is higher mathematically and logically. When applied to measurement, engineering, automatic control, and other fields, the controlled bridge circuit has higher control ac-curacy. Mathematical derivation and simulation results prove the correctness of the bridge balance conclusion and the special properties of this bridge when applied to the measurement field.

BIM技术在桥梁设计阶段的应用探讨

在现阶段我国桥梁工程项目建设中,因为面临着更高的建设要求,桥梁结构也更为复杂,在承载能力以及耐久性方面同样也需要得到良好保障,如此一来,需要重点围绕桥梁工程项目建设全过程进行严格把关。从桥梁工程项目设计阶段来看,如果设计方案不合理,存在着较多的隐患和缺陷,必然也就会影响后续桥梁工程项目整体施工效果,所以,切实提升桥梁工程设计水平极为必要。BIM技术作为当前工程行业中至关重要的新型技术手段,确实在多个方面发挥着积极作用,将其应用到桥梁工程项目中,必然也可以更好地优化设计方案。