The future development trend and innovation requir

The future development trend and innovation requirements of motor design

as energy conservation has become the focus of global attention, the energy efficiency of motor design has increasingly become a concern. Motor drive products constantly cooperate with the development trend of the industry, help designers improve energy efficiency, reduce energy consumption, improve reliability, reduce the number of components, etc., and play a positive role in realizing energy conservation

motor market development trend

after a hundred years of development, the application field of motor has been very extensive. Ansenmey semiconductor's motor drive products cover applications in automotive and industrial fields, which is an epitome of the main trends in the motor market

the first is the trend of automotive electrification, that is, automotive manufacturers use integrated high-energy motors to replace the power of traditional internal combustion engines, usually brushless DC (BLDC) motors to replace belt and gear drives for auxiliary components under the hood, such as pumps, valves, heating and air conditioning, fans, etc. Because BLDC motor has quite excellent performance, it has also begun to enter other applications that traditionally adopt the scheme of Brushless DC (BDC) motor

another trend is that the increase in the application assembly rate has increased the number of motors installed. For example, the air flap control of motorized heating, ventilation and air conditioning (HVAC) (mainly used for brush DC and unipolar stepping motors) has also been applied to the HVAC system of lower end vehicles

bldc motors are more and more widely used in industry and telecommunications. Typical applications include fans, blowers, pumps, and compressors. BLDC motor has higher energy efficiency than AC motor or switched reluctance motor. BLDC motor can realize low-cost variable speed applications, especially for the integration of sensorless commutation algorithm, which can save external sensors

new requirements of energy-saving trend for motor drive applications

energy cost is usually the most important part of the whole life cycle cost of motor. Therefore, using more efficient motors can save a lot of energy

the new requirements of the energy-saving trend for motor drive include several aspects. First, energy efficiency is determined by the selected motor technology and motor structure, so it is required to select the motor that can convert electrical energy into mechanical energy to increase the proportion to the highest. Secondly, we should choose the driver circuit that can minimize the power consumption of the driver and improve energy efficiency. Third, we should realize the optimized energy consumption scheme by improving the motor drive intelligence

in addition, some applications also require that no brush motor (stepping or brushless DC motor) be used in the system; Instead, sensorless commutation (without potentiometer or Hall sensor feedback) and embedded motion control algorithm (for low power applications) are used to maximize energy efficiency, reduce audible noise, and improve electromagnetic interference (EMC) performance. In addition, there are some applications that need to lay the drive circuit and motor next to each other on the electromechanical actuator, and connect them to the central control unit through the bus (Lin, I2C, etc.)

innovative solution of ansenmey semiconductor to improve the energy efficiency of motor design

in the application of fast, accurate and dynamic motion control, stepping motor is an increasingly popular choice. With the development of motor technology, intelligent drive/controller special standard products (ASSP) have also emerged, which can drive these motors efficiently. These devices provide designers with more flexible solutions with the increasing demand for friction and wear testing machines from all walks of life, the continuous improvement of China's manufacturing level and the improvement of testing technology, creating a space for innovative functions and discovering many new applications

1. Bipolar stepper motor drive and controller

amis-30623 of amis-3062x series developed by ansenmey semiconductor is the drive and controller of bipolar stepper motor in high-efficiency drive electromechanical actuator. This product embeds a dedicated finite state machine and a local interconnect (Lin) instruction set tailored to the requirements of advanced headlamp system (AFS) systems. The device integrates non sensing control and detection functions, which can improve reliability, reduce the number of components and on-board space, and reduce product costs. Amis-30623 is specially designed for remote and multi axis positioning applications. The designer of non sensing control and detection function can easily complete accurate setting. 13. Overload protection: when the load exceeds 10% of the rated value, it will automatically stop; Bit calibration and semi closed cycle operation

the amis-30624 stepper motor driver of Anson semiconductor can also be used for mobile panoramic shooting - up and down swing - zoom zoom zoom (PTZ) security camera applications. The device drives three motors with a simple microcontroller through I2C bus. This topology supports a very compact camera design, helping to reduce costs and provide accurate work

the main advantage of this series of devices is that all motion controls for applications should be replaced immediately if there are burrs or damage. The oil box function can be pre programmed in the factory, significantly reducing the coding work of engineers. If the flash memory version of the device is selected, it can also be reprogrammed when developing applications and later testing and debugging software. This will significantly accelerate the speed of design updates

2. Precise dynamic control of stepping motor

with the appearance of stepping motor in more and more applications, designers are also continuing to pursue high-precision positioning. In addition, its high energy efficiency, high performance and shrinking size also make it increasingly attractive to textile machines, robots, CNC milling machines and other equipment. The amis-305xx series of ansenmey semiconductor is an ASSP that needs precise dynamic control of stepping motor system. It can provide variable motor current control with SPI interface to realize precise dynamic control

amis-305xx series integrates a converter to convert continuous steps into the required coil current (through look-up table or other methods). The series also integrates driver transistors with H-bridge configuration, flyback diodes, PWM on-chip current stabilization, and a variety of protection circuits. Figure 2 is the application block diagram of amis-30522

this series IC includes two built-in h bridges, which can drive the two-phase stepping motor with a current of up to 1600ma. The speed and load angle outputs enable the main microcontroller to detect the stalled rotor and the end of operation without additional switches, Hall sensors or optical encoders. In addition to stall detection, these functions also allow designers to program the microcontroller to calculate the rotor position and dynamically adjust the current or speed as required to prevent out of step. It also perfectly realizes micro stepping, which can eliminate the noise and vibration of the end stop, and improve the accuracy and reliability of motion control without adding components

when building processing, automotive, safety and building automation applications, engineers no longer have to worry about dynamic design in motion algorithms, because these are embedded in ASSP. They only need to design the overall movement of the motor, and the relevant IC can realize advanced features such as sensorless stall detection, which further simplifies the work of designers and speeds up the time to market. In addition, these new micro stepping motor drivers can also enable designers to complete dynamic motion applications quickly and easily with the least components and the lowest material cost

3. Other motor drive control solutions

Anson semiconductor ncv770x series drivers are also commonly used to drive the air flap in HVAC electronic control units. This series of half bridge drives provides a cost-effective solution, which can drive multiple brushless DC motors in series or in parallel. At the same time, it fully meets the latest automotive standards in terms of reliability, diagnosis, battery powered transients, etc. during the life cycle

summary

high efficiency and energy saving is a general trend, and motor drivers are also tending to become general-purpose products in large quantities, and reducing the cost of each motor driver and reducing the size of the scheme are the main driving forces. The market will achieve a dynamic balance between efficient control methods and costs

according to the strategic focus and understanding of system requirements, especially the needs of customers, Anson semiconductor adopts a customized method to provide customers with different solutions from ASSP to customer application specific integrated circuit (ASIC). These solutions will help the motor application designers in the fields of consumer electronics, industrial control and automotive electronics in the Chinese market to obtain higher efficiency, longer service life and better fault control, and gradually realize the miniaturization, high b2.01 efficiency, low noise and higher reliability of the motor

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