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By Hamid A. Toliyat
Even though the programming and use of a electronic sign Processor (DSP) is probably not the main complicated technique, using DSPs in functions equivalent to motor regulate might be tremendous demanding for the first-time consumer. DSP-Based Electromechanical movement keep an eye on presents a basic program consultant for college kids and engineers who are looking to enforce DSP-based movement keep an eye on structures in items and commercial systems.This review explains the advantages of integrating DSP into movement keep watch over, detailing the measure of freedom supplied through a a DSP for the improvement of confident, computationally broad algorithms. The authors clarify how using those complex algorithms can significantly raise the functionality and potency of an electromechanical system.Chapters are supported by way of laboratory routines, allowing you to right away observe the data to sensible eventualities. Following an intensive research of the LF2407 DSP processor, the booklet provides various real-world purposes, demonstrating present use and encouraging destiny improvement.
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Extra info for DSP-Based Electromechanical Motion Control (Power Electronics and Applications Series)
Sample text
Auxiliary Register Arithmetic Unit (ARAU) and Auxiliary Registers The ARAU generates data memory addresses when an instruction uses indirect addressing to access data memory (more on indirect addressing will be covered later along with assembly programming). Eight auxiliary registers (AR0 through AR7) support the ARAU, each of which can be loaded with a 16-bit value from data memory or directly from an instruction. Each auxiliary register value can also be stored in data memory. The auxiliary registers are mainly used as “pointers” to data memory locations to more easily facilitate looping or repeating algorithms.
VisSim allows users to simulate algorithms and develop code in “block” form. More on VisSim will be presented in the Appendix. 2 The Components of the C2xx DSP Core The DSP core (like all microprocessors) consists of several subcomponents necessary to perform arithmetic operations on 16-bit binary numbers. The following is a list of the multiple subcomponents found in the C2xx core which we will discuss further: • • • • • • A 32-bit central arithmetic logic unit (CALU) A 32-bit accumulator (used frequently in programs) Input and output data-scaling shifters for the CALU A (16-bit by 16-bit) multiplier A product-scaling shifter Eight auxiliary registers (AR0 – AR7) and an auxiliary register arithmetic unit (ARAU) Each of the above components is either accessed directly by the user code or is indirectly used during the execution of an assembly command.
1 - Add the two numbers “2” and “3”: LDP #6h ;loads the proper DP for dma 300h SPLK #2, 300h ;store the number “2” in memory address 300h LACL #3 ;load the accumulator with ADD 300h ;adds contents of 300h (“2”) to the contents ;of the accumulator(“3”); the number “3” accumulator = 5 Another way: LDP #6h ;loads the proper DP for dma 300h SPLK #2h, 300h ;store the number “2h” in memory address SPLK #3h, 301h ;stores the number “3h” into memory address LACL 300h ;load the accumulator with the contents in ADD 301h ;adds contents of memory address 301h (“3h”) ;300h ;301h ;memory location 300h ;to the contents of the accumulator (“2h”) ;accumulator = 5h Looping algorithms are very common in all programming languages.