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Two main problems of PID Control are determining the parameter gain and incapability of stabilizing higher order system (triple order system or above). The paper will discuss the first problem of PID Control by optimizing the tuning by using a bat algorithm. The advantage of the method is having a converged solution. The objective function in the optimization process is modified to give better performance. The controller design is then tested to control a linearized magnetic levitation system. Based on the simulation result, the method is proven to be able to tune the PID controllers parameters with good consistency in the optimized solution. Also, the optimized system performs well by having rising time and settling time faster than 2 seconds and overshoot not more than 10 percents.