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1.CISC: Complex instruction set computer. In contrast to these computers, which feature CPUs that perform complex instructions directly, the RISC (reduced instruction set computer) type aims to achieve hardware simplification and faster speeds by using simpler instructions. CISC computers have the feature that programming is relatively easy since there are so many instructions., C3 L; i6 h+ K
2.PWM: Pulse-width modulation 6 K, {! C2 O5 E/ @
3.SuperHTM is a trademark of Renesas Technology Corp.
2 d. V* \0 \- v7 T' p J- `0 ^$ l4.Motor control timer( R! n$ I% ?) j) W
A function used to generate the waveforms used to drive a three-phase motor. Motor drive requires three sinusoidal waveform that are displaced in phase by 120 . To implement this drive, sine waves are generated by periodically switching (turning on and off) external circuits (IGBT or MOSFET devices) with the microcontroller's output ports. The motor speed is controlled, and the torque adjusted, by the CPU adjusting the switching intervals.
0 S3 \) E2 e, {4 \6 s( P% B5.Three-shunt current detection method! v5 o( r0 ^% b: z" L
This is a method used in systems in which shunt resistors are inserted, as protective resistors, in each of the three arms (U, V, and W) of a three-phase motor drive inverter. The current flowing in each phase is detected from the current flowing in each resistor. v7 S+ `* y4 \6 E# }) c
6.Single-shunt current detection method& |1 x. S; T) E$ O; ]' z# N" T
This is a method used in systems in which a single shunt resistor is inserted, as a protective resistor, in the ground line of a three-phase motor drive inverter. The current flowing in the shunt resistor is detected. Note, however, that since the current flowing in the resistor is the sum of the U, V, and W phases, the current flowing in each phase is inferred by adjusting the timing with which the current is measured and performing calculations on the detected current levels.
7 |8 j( M, t: M+ Y7.Dhrystone: The performance of the RX62T Group microcontrollers (165 DMIPS) was measured using the Dhrystone 2.1 benchmark.& S! m9 E' E* [6 ^+ }, \/ O
8.FPU: Floating point unit. This is a circuit dedicated to performing floating-point calculations. FPUs are effective for performing large numbers of floating-point calculations with high precision and at high speed. |
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