新型双向激振电液伺服式动态三轴试验机_王奇利.pdf

28 3 V ol . 2 8, No . 3 2010 5 Phy sics Ex am inatio n and T est ing M ay. 20 10 1 2 王奇利 , 扎定一 ( 1. , 7 10077 2. , 7100 65) : , , , , , : : T G 115 : A : 1001- 0777( 20 10) 0 3- 0032- 03 A New Type of B-i Directional Excitation Electric Dynamic Servo-Control Triaxial Test Machine 1 2 Wang Q i- li , Z ha D ing- yi ( 1. Xi an Aer otechnica l Colleg e, Xi an 7 10077, Shaanx i , China 2 . Sh anxi Zho nghu i L ET RY T esting M achine Co L td, Xi an 7 10065, Shaanx i , China) Abstract: T he ar ticle describes a new typ e of bi- directio nal ex citation electric dynam ic ser vo- co nt rol triaxial test m a- chine , builtin div ing- pr essure comp en satio n ax ial lo ad sen sor w hich r edu ced eff ect of f rictio n and impro ved m easur e- m ent accuracy. All dig ital electr o- hydraulic ser vo contro l system m ay solve a pro blem of co nt ro l respo n se in so il test pro cess . Equ ipm ent and electr ical comp ensation sy st em f o r vo lum e def or m ation m easur ing w er e f itted f or test o f un- satur ated so il. Pr og ramm e o f electric auto- comp en satio n f o r sp ecim en o f diff erent diam eters can be r eso lv e pr oblem of co mplex inter action of elem ent s in the soil tr iaxial test . Key wor s: tr iax ial testing m achine div ing- cell bi- directional ex citat ion r emove coupling circu it , , , , , , 20 kN , 0 . 5 % 50 mm, ,