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In this paper, we propose an approximate load balance approach based on the Identifler(ID)/Locator split routing architecture. In our approach, we propose a multipath method and a schedule algorithm. Both of them run on each router for scheduling each packet that is received from the connected host onto the proper path to the destination host. Our approach allows each router using the ID/Locator splitting to obtain the multiple paths between each pair of hosts. The merit of our approach is that the path is selected by each router individually to achieve load balance other than a central controller in the ID/Locator split routing architecture. The time complexity of the schedule algorithm is much lower than the linear programming (LP) and nonlinear programming (NLP). Simulation results show that, compared to the existing single path routing based on the ID/Locator split routing architecture, the mean of normalized link utilization (NLU) increases by more than 75% relatively on average of all simulated scenarios.

The U/f-constant (Voltage/Frequency equals to constants) control strategy of three-phase AC motor was studied. SPWM (Sinusoidal Pulse Wave Modulation) algorithm was employed to design the open-loop speed control system of three-phase AC motor and implement through programming on DSP (Digital Signal Processor), TMS320F2812. The test results showed that the output signal of the control system is characteristic of sine wave with small harmonic wave, the rotor speed agreed well with the theoretical value. The purpose of precise speed control in the system can be achieved in range of 20-70 Hz.