CAJ | 학술논문

针对某高动态响应的转矩传感器应用,给出了一种实用的惠斯登电桥测试电路.采用具有自动稳零功能的AD8230仪表放大器进行初级放大,有效解决了传统仪表放大器失调电压较大带来的零值附近信号淹没问题.系统采用电流环传输信息,很好地抑制了干扰,大大提高了系统动态性能.试验结果表明:该系统电路设计合理,可靠性高、精度高、温漂小、动态响应快、抗干扰能力强,对其他应变测试系统的电路设计具有借鉴意义.
침대모고동태향응적전구전감기응용,급출료일충실용적혜사등전교측시전로.채용구유자동은령공능적AD8230의표방대기진행초급방대,유효해결료전통의표방대기실조전압교대대래적령치부근신호엄몰문제.계통채용전류배전수신식,흔호지억제료간우,대대제고료계통동태성능.시험결과표명:해계통전로설계합리,가고성고、정도고、온표소、동태향응쾌、항간우능력강,대기타응변측시계통적전로설계구유차감의의.
For the application of a toque sensor with high dynamic response, a practical Wheatstone bridge test circuit was designed. By applying the instrumentation amplifier AD8230 with auto-zeroing reduces for initial amplification, the problem of signal submergence near zero value which resulted from voltage offset with traditional amplifier was effectively solved. The current loop was applied to transmit information, which can well reject noise and improve the dynamic performance of the system. The experimental results show that the circuit is designed reasonably with high reliability, high precision, low temperature drift, fast dynamic response and strong anti-disturbance ability, and it is a good reference for other strain gauge systems.