Recently Wireless communication technologies have strongly adopted in real-time industrial environments. The increasing availability of products and solutions based on the IEEE 802.11 standard make this kind of communication technology becomes more cost effective in distributed control systems. This paper describes real time control application over Wireless Local Area Network (WLAN) in Ad hoc mode using a Virtual Instrument VI environment (LabVIEW). Particularly the delay time in such networks is considered as a critical factor that has a significant effect on the system response time characteristics such as rise time(T r), settling time(T s). So in this paper we discussed the effect of using different controllers (such as P, PID, Fuzzy, …) on the overall system performance. The experimental measurements show that the using of fuzzy controller gives best results where it can minimizes the effect of the network delay on the system behavior as much as possible.