汽车工程
汽車工程
기차공정
Automotive Engineering
2015年
11期
1307-1313,1327
,共8页
快速制动执行器%超磁致伸缩材料%励磁线圈%柔性铰链%位移放大机构
快速製動執行器%超磁緻伸縮材料%勵磁線圈%柔性鉸鏈%位移放大機構
쾌속제동집행기%초자치신축재료%려자선권%유성교련%위이방대궤구
speedy braking actuator%giant magnetostrictive material%excitation coil%flexible hinge%displacement magnification mechanism
为有效解决制动执行器快速运动和高精度定位的矛盾，采用超磁致伸缩执行器来操纵制动机构，以提高制动系统的响应速度。在分析快速制动器的设计要求及其执行器的原理和可行性的基础上，进行了快速制动执行器总体方案设计和主要部件设计。根据制动所需的位移量和制动力，给出了GMM棒的长度和直径计算方法。由压磁方程结合快速制动要求，建立了螺管线圈的匝数与励磁电流的乘积与执行器输出位移量的关系，避免了直接求解激励磁场强度的困难。与此同时还探讨了线圈匝数和电流选择的依据，推导了位移放大机构尺寸的计算公式。最后进行了实验验证，结果表明B-GMA的工作特性能满足快速制动的要求。
為有效解決製動執行器快速運動和高精度定位的矛盾，採用超磁緻伸縮執行器來操縱製動機構，以提高製動繫統的響應速度。在分析快速製動器的設計要求及其執行器的原理和可行性的基礎上，進行瞭快速製動執行器總體方案設計和主要部件設計。根據製動所需的位移量和製動力，給齣瞭GMM棒的長度和直徑計算方法。由壓磁方程結閤快速製動要求，建立瞭螺管線圈的匝數與勵磁電流的乘積與執行器輸齣位移量的關繫，避免瞭直接求解激勵磁場彊度的睏難。與此同時還探討瞭線圈匝數和電流選擇的依據，推導瞭位移放大機構呎吋的計算公式。最後進行瞭實驗驗證，結果錶明B-GMA的工作特性能滿足快速製動的要求。
위유효해결제동집행기쾌속운동화고정도정위적모순，채용초자치신축집행기래조종제동궤구，이제고제동계통적향응속도。재분석쾌속제동기적설계요구급기집행기적원리화가행성적기출상，진행료쾌속제동집행기총체방안설계화주요부건설계。근거제동소수적위이량화제동력，급출료GMM봉적장도화직경계산방법。유압자방정결합쾌속제동요구，건립료라관선권적잡수여려자전류적승적여집행기수출위이량적관계，피면료직접구해격려자장강도적곤난。여차동시환탐토료선권잡수화전류선택적의거，추도료위이방대궤구척촌적계산공식。최후진행료실험험증，결과표명B-GMA적공작특성능만족쾌속제동적요구。
To effectively solve the contradiction between the quick movement and high-precision positioning of braking actuator, giant magnetostrictive actuator ( GMA) is adopted to operate braking mechanism for increasing the response speed of brake system. The overall scheme and the component structure of speedy braking actuator are designed based on the analysis on the design requirements of speedy brake and the principle and feasibility of its ac-tuator. According to the desired actuator displacement and braking force, the calculation method for the length and diameter of GMM bar is given. The relationship between actuator output displacement and the product of solenoid coil turns and excitation current is established by piezomagnetic equation combined with the requirements of speedy braking, avoiding the difficulty of direct calculation of excitation magnetic field intensity. In addition, the basis for selecting coil turns and excitation current is discussed and the calculation formulae for the sizes of displacement mag-nification mechanism are derived. Finally a verification test is conducted with a result indicating that the characteris-tics of B-GMA meet the requirements of speedy braking.
