Motor control

• Inverter control technology for synchronous and induction motors
• Converter technology for driving FETs and IGBTs
• Servo control technology – position, speed and current vector control
• Detection technology
• hardware and software technologies of microcomputer
• Noise-free technology
• High-speed serial transmission technology
• Sensor less technology for surface and interior permanent magnet synchronous motor

Examples of developed products

Dedicated servo amplifier for special uses: small to medium size, 1 kW and up

<Specification Summary>
Voltage: AC 200V, single phase
Speed: 3,000 r/min
Power: 1 kW

Motor drive control for large construction equipment 10 kW and up

 Excellent products from Takenaka

(1) Servo amplifier
- A servo amplifier using a resolver to control a robot with 7 axles multiple joints Two servo amplifiers on one board
- One board holds a two-channel servo amplifier
- Permanent magnet synchronous motors controlled by vector control
(2) Transformers and control boards for ultra-miniature servos
- Ultra-mini printed circuit boards with servo motor converter and controller
-Uses a FET as an ultra-mini converter and controls motors up to about 2 kW
- Controls permanent magnet synchronous motors with vector control
- High-speed serial data transmission with host controller (70Mbps)
- Host controller runs on Linux
(3) Taking out robot controller
- Controller for a high-speed taking out robot of CD cases for plastic injection molding machines
- Two-axis orthogonal coordinate type
(4) Synchronous chucking controller for Machining tool
- Holds thin pipes and wire with left and right chucks in machining tools, controlling the speed and phase of each rotator and and the synchronous chucking.

Applied technologies

• Image data I/O technology
• Peripheral hardware technology for frame memory and other image processing
• FGPA design and simulation technologies, including AHDL, VHDL, Verilog, ModelSim and LEDA
• PCI, C-PCI and other master-slave bus technologies
• Microcomputer hardware and software technologies
• High-speed parallel processing technology

Examples of developed products

A multi-function image converter – TEU-08
<Overview of Devices>
Units for rotaing and splitting images from monitoring cameras into four part screens,converting to NTSC or analog RGB signal format and compressing video into JPEG for network transmission

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Excellent products from Takenaka

(1) Parallel DSP board
- High-speed parallel processing board system for robot vision applications
- Compact PCI board with four high-speed DSP
(2) Image compressing/decompressing board
- Compact PCI board for compressing and decompressing color MPEG files
(3) UXGA and optical communication board
- Compact PCI board for optical communications at 2.5 Gbit/s and displaying UXGA images
- Used APEX harware (large-scale FPGAs) for processing
(4) Imaging checker
- Mobile camera module testing device
- Testing device for displaying mobile camera images on Windows in real time and auto-detecting brightness, hue, pixels and other potential defects
- Used PCI master
(5)Small board for image monitor boards
- A mobile camera module and image processing chip for detecting movement and other features in the camera image and then outputting in NTSC format with digital YUV color
(6) Monitoring camera device
- Determining object shapes and movement in real time to judge situations
- Incorporated an artificial retina integrated circuit from Mitsubishi electric
(7) Image board with detection engine
- Featuring an image detection engine integrated circuit (parallel processor) from Sharp for high-speed matching.
- Applying to robot etc as general purpose detective sensor by combining general purpose USB module and camera module.

Applied technologies

• Inverter control
• Converter technology for FET and IGBT drive
• Vibration control technology (Power and current control)
• Coil design
• Microcomputer hardware and software
• Noise reduction

Example of a product developed by Takenaka

Electromagnetic Induction Heater – TECIH 120-001
- Rated input power: 1.2 kW ± 10%
- Efficiency: at least 85%
- Phase: single
- Voltage and frequency: 120 V AC, 50/60 Hz
- Protective functions: overheating of cooling fan, overcurrent/overvoltage, IGBT overcurrent/overvoltage, under voltage, thermistor disconnect and others
- Operating temperature and humidity: -10 to +50° C, up to 90% relative humidity
- Other: ETL SEMKO certified product – UL 197

Excellent products from Takenaka

(1) Operation panel

- Controls the 2.5 kW induction heating inverter made by Fuji Electric

- Three modes: regular heating, deep-fry heating, keeping warm

- Power and temperature settings by a variable resistor

- Can be switched on and off with an external signal

- Has external output of heating status

(3) Plate heating controller

- Controls the 2.5/5 kW induction heating inverter made by Fuji Electric

- Uses an infrared sensor to monitor plate temperature, preventing overheating

- Digital settings to control heating time

(3) Dish heating controller

- Controls the 100 V Takenaka induction heating inverter and the 200 V Fuji Electric 2.5 kW induction heating inverter

- Can heat many dishes at once with one induction heating inverter

- Special electromagnetic coil for heating also available

(1) Wave making system
(2) High-speed data transmission control board
(3) Data collection monitor
(4) Monitor equipment for vehicle and railway car
(5) Ultrasonic crack inspector
(6) Money changer remote monitor
(7) Design and manufacture of power converters and inverters
(8) Design of energy-saving equipment
(9) Design of power electronics equipment