Industrial robot driver chip: the core performance is further improved, and the functional coverage is further expanded

electronic Enthusiast Network reports (text / Li Ningyuan) In this series, we have seen a lotIndustrial Robotdriver chip.But these are far from covering the huge domestic industryRobotneed. With the increase of players on the domestic industrial Robot track, robot manufacturers, especially domestic collaborative robot manufacturers, are looking for the most suitable main control chips for themselves. The series listed before include those that build powerful cores, those that are configured with powerful communication functions, and those that integrate advanced vision. The single determining factor no longer exists for manufacturers. They often have to consider expanding robot functions and controlling the whole machine. cost.

In the last issue, we focused on analyzing robot driver chips with powerful industrial communication capabilities. In this issue, we will take a look at some driver chips that also have terrifyingly high performance in terms of market share.

Microchip’s product group is very rich, including not only PIC, AVR, SAM series, but alsoapplicationFor FPGAs that control different motor peripherals, there are many domesticrobot companyselected these series of products. Aside from the chips used for various stepping and BDC motors, the high-performance MCUs of the SAM series have always been quite unique in multi-axis motion control.

It is unique because the SAM S70 and E70 use a 300MHz Arm Cortex-M7 core, which is a relatively rare option in multi-axis control. Generally speaking, M4 with DSP data processing instructions is enough to handle multi-axis motion control of industrial robots.If you consider the expansion function, adding FPGA is enough to cope with most of the currentIndustrial Robot Application. Then there is only one purpose left for choosing M7 – to pursue the ultimate project performance.

The SAM S70 and E70 have indeed achieved the most extreme performance. The S70 has up to 64 KB tightly coupled core memory while having a high frequency, which can quickly drive FOC control. To achieve the ultimate speed, the S70 uses a pair of 2 Msps dual sampling 12 bit ADC engines. Coupled with advanced analog peripherals, 16 bit PWM and 16 bit Timers, the S70 can easily achieve multi-axis control and dual motor control with high performance.

The E70 is linked to the theme of our last industrial newsletter. The E70 inherits all the high-end performance of the S70 and adds IEEE-1588 Ethernet and CAN FD connectivity options to the high-performance control. In order to deal with the most complex real-time control, E70 can use QSPI interface to add LAN9252 EtherCAT slave controller to realize high-performance motor control based on EtherCAT.

Layerscape Multicore Communications Processor Family

NXP’s motion control and robotics solutions have accumulated rich experience in computing performance, built-in connectivity, and low latency, and are familiar with multi-axis motion control and robotics applications. The Layerscape multi-core communication series is NXP’s housekeeping processor for robot multi-axis motion control applications.

This series adopts dual-core/quad-core SoC, some choose ARM A53 and some choose A72, so there is no doubt about the computing performance. All processors in this family have built-in connectivity options to achieve the low latency and low jitter required for motion control and robotics applications.

LS1046A and LS1026A are two representative products of multi-core communication processors. They integrate quad-core (LS1046A) and dual-core (LS1026A) 64-bit Arm Cortex-A72 with packet processing accelerated, high-speed peripherals. The four CPUs act as a cluster of four cores, sharing a 2 MB L2 cache, single-threaded cores with 32 KB L1 data cache and 48 KB L1 instruction cache, clocked at up to 1.8GHz. The layered interconnect technology used in two of these families has an operating frequency of up to 700 MHz.

The impressive performance of the LS1046A exceeds 32000 CoreMarks, and it can be paired with 10 Gb Ethernet, PCIe Gen3, SATA 3.0, USB 3.0 and QSPI interfaces for multi-axis control. In addition to the hardware itself being powerful enough, NXP also provides a real-time open source operating system using Xenomai Linux to enhance the determinism and real-time of robot motion.

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Published on 09/09/2022