a active constraint

基本解释

The new manner of active constraint force to control the machinery is broadened the apply of Lagrange equation and break a new thinking for the servo control.
这种在机械系统中利用主动约束力作为控制量的方法拓宽了传统拉格朗日力学的应用范围，为机械系统伺服控制理论提供了一个新的思路。
As a result, the inequality volume constraint is not always active at the optimum solution. In other words, less material may lead to a stiffer structure for an optimum material layout.
惯性载荷作用下拓扑优化结果并不总是达到体积约束上限，即材料用量越多结构刚度未必越大；
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A revised SQP-algorithm is used to solve the nonlinear mathematical programming problem and an active-constraint set strategy is introduced, so that the number of constraints is reduced greatly.
采用一种改进的SQP算法求解降维后的非线性规划问题，提出了用可行性约束集方法求解二次规划子问题，来降低问题的约束数。