Using PLC Homing Commands for Servo Positioning
Technical guide to PLC positioning and servo control with FX3U: pulse output configuration, homing (ZRN/DSZR), speed/acceleration settings, flags and limit switch handling.
Industrial Control
Yisifang four-motor drive system explained
Technical overview of Yisifang four-motor drive: control architecture, millisecond wheel-by-wheel torque management, performance metrics, safety and wheel-failure handling.
Oil-cooled Motor Cooling Designs
Review of Huawei and Xiaomi liquid-cooled stator patents, covering lamination stacking, axial and radial cooling channels, oil-ring spray outlets for uniform stator cooling.
Sources of Vibration and Noise in Permanent Magnet Synchronous Motors
Analysis of vibration sources, early-stage modeling, and research on electromagnetic excitation and structural modal response in permanent magnet synchronous motors.
Engine Waste Heat Power Generation Techniques
Technical review of exhaust waste heat recovery for vehicles, comparing waste-heat power generation and cooling methods (Rankine, thermoelectric, turbine, absorption/adsorption).
Configuring and Programming PWM on S7-1200 PLC
Configuring and programming PWM on Siemens S7-1200 with STEP7: hardware setup, PWM parameters, CTRL_PWM instruction, I/O address mapping, and runtime duty/cycle adjustments.
Wolfspeed Power Modules in Three-Phase Motor Drives
Silicon carbide (SiC) in a 25 kW three-phase motor drive boosts system efficiency ~2.4-2.6%, reduces heatsink size and losses, and improves thermal margin.
Converting Electrical Schematics to PLC Ladder Diagrams
Practical workflow to convert a three-phase induction motor fault alarm wiring diagram into a PLC ladder diagram, including I/O encoding, external wiring and instruction mapping.
BYD Seal Eight-in-One Motor Technology
Technical teardown of the BYD Seal motor: 6-layer flat-wire hairpin stator, oil cooling, segmented NdFeB rotor, 0.20 mm laminations, leakage flux and gear tradeoffs.
Selecting PLCs to Drive Contactors
Technical article about electronics and hardware engineering.
Common Motor Starting Methods
Overview of motor starting methods - DOL, autotransformer, Y-Δ, soft starter and VFD - comparing principles, torque, inrush current, cost and applications.
PLC Installation and Commissioning Procedure
Field-proven procedures for PLC commissioning and installation: lab tests, I/O checks, simulated interlocks, signal attenuation mitigation and wiring verification.
