32 results about "Floating point dsp" patented technology

The invention discloses a low-carrier-wave-ratio on-line computation multi-mode space vector pulse width modulation soft core which can complete on-line computation multi-mode space vector pulse width modulation in a high-power three-phase alternating current asynchronous motor control system. The low-carrier-wave-ratio on-line computation multi-mode space vector pulse width modulation soft core mainly comprises an AD control module 01, a double-port RAM 02 based on FPGA, a double-port RAM control module 03, a section judgment module 04, a modulation mode switchover management module 05, an asynchronous modulation time computation module 06, a vector action angle computation module 07, a time normalization module 08 and a PWM signal generation module 09. The low-carrier-wave-ratio on-line computation multi-mode space vector pulse width modulation soft core not only has the advantages of high speeds and high reliability of a hardware circuit, but also has good module reusability and transportability, and is good in steady-state performance and dynamic-state performance. When serving as a motor control system coprocessor, the low-carrier-wave-ratio on-line computation multi-mode space vector pulse width modulation soft core liberates a core controller (a floating point DSP) from a large amount of sine and cosine computation and periodic events occupying too many resources, better runs a motor core control algorithm and improves the performance of the control system.