中文摘要：

在无限时区风险灵敏度指标下，研究了一类具有严格反馈形式的Markov跳跃非线性系统的控制器设计问题．首先，将此问题的可解性转化为一类HIB方程的可解性；然后根据此方程，构造性地给出一个与模态无关的控制器，此控制器可保证闭环系统是依概率有界的，且风险灵敏度指标不大于任意给定的正常数，特别地，当噪声项在原点处消逝时，能够确保风险灵敏度指标为零；最后，通过仿真例子验证了理论结果的正确性．

英文摘要：

The controller design for a class of strict-feedback nonlinear stochastic systems with Markovian jump under a risk-sensitive cost function criterion is studied. Firstly, this problem is solvable if a class of HJB equation is solvable. Then, a constructive control law, which is independent of the regime, is designed based on this HJB equation, which guarantees any desired positive level of long-term average cost for a given risk-sensitivity parameter and achieve boundedness in probability for the closed-loop system. As a special case, when the vector fields for the disturbance vanish at the origin, the control law can actually guarantee a zero long-term average cost for the closed-loop system. Finally, an example is given to illustrate the correctness of the main results.