Piston

LAM4 linear actuator

24/12V DC motor
max push load :75kg，max pull load:75kg
speed:6-50mm/s；stroke from 40mm to 130mm step by 30mm
100% duty cycle， IP52，IP65，IP66
accessories：potentiometer，PLC control，reed switch

http://www.lim-tec.com/english/products1.html?gclid=CMPywpys3aUCFc0e4QodnVu11w

Specifications
Average Lamp Life
2000hrs
Beam Angle
30 Degree
Cap/Base
GU4/GZ4
Cap/Base Type
2 Pin
Colour
Warm White
Colour Temp
2700 Kelvin
Diameter
35 mm
Equivalent Brand
Osram Decostar
Length
37 mm
Manufacturer
Pro Lite
Shape
Reflector/Spotlight
Type
Halogen
Voltage
12V
Wattage
10W

Robot Servo Motors

The strawberry picker robotic arm will consist of 5 common servo motors with a built in potentiometer (a variable resistor)



The RBM-606MG features:

• Model: RBM-606MG
• Product Code: MT-010
• Made with full metal gear
• Double bearing structure at output axle
• 180 degree rotation
• Nut inserted structure (frame fixing by fastening bolt)
• White (signal), Red (+), Black (Gnd)
• Suitable for multi-joint robots

Specifications:

Torque: 7.8 kg/cm (6.0V)
9.8 kg/cm (7.0)
Power: 5V – 7.4V
Speed: 0.2 sec/60 degrees (6.0V)
0.17 sec/60 degrees (7.0V)
Dimensions: 5cm x 4cm x 2cm thick
Weight: 50g
Quantity required: 5

Denso Robot Arm

If only we had the expertise, time and money of Denso =] then this is the kind of robotic arm we would be looking to use on our strawberry picker.

Strawberry Picker Robot Arm

The robot arm will have 5 degrees of freedom featuring a base rotation, shoulder, elbow and wrist motion and a functional gripper. At the base of the gripper will be a small sharp stainless steel scissor that will cut the stem of a strawberry as its being picked. The arm will consist of 5 servo motor actuators which will be strategically placed to give flexible, quick and 180+ angle degrees of rotation.
The rest of the arm will be constructed from 3mm thick aluminium alloy sheet.

Project Managment

I would also like to suggest a list of tasks that we need to complete our project.

If you all agree we can discuss this in the next meeting.

Discussion-Modifications

I have just discovered today that we don't need a braking system as the current supply is stopped to the DC motor. The Magnet is the motor helps to produce the braking force required.

Instead of using 4 DC motors in wheel Hub.
I would like to suggest only 2 motors on the rear hubs.
In the front wheel i would suggest a turning actuation system(Discuss the next the meeting).

Stepper Motor System

We will require 2 DC stepper motors for the linear motor of the robotic arm and sensor.
Specifications:

Torque: 120 oz. in.
Voltage: 3.2 V.
Current: 2 A
Step Angle: 1.8° (200 steps/rev)

Ahsan and Illute

DC Motor System

DC Motor is drived by a Speed Controller that is connected to a Speed sensor.

The system in powered by battries.

DC Motor

This motor will be fitted in the hub casing of the wheel.

Specifications:

Quantity required = 2 Rear wheels.

Volt = 36v/48v

Power = 180w-500w

Rpm = 350rpm

Ahsan & Illute

Contorller = 36v/48v

Retro-reflective sensor

For a retro-reflective application, the transmitter and

receiver are incorporated into a single housing. A reflector is mounted

opposite to the sensor and returns transmitted light back to the receiver.

Compared to a thru-beam application, retro-reflective sensors are used for

medium range or average excess gain applications. “Light-operate” sensors

provide a signal when the beam is not interrupted(target not present).

Vision Sensor

BVS OI-3-051-E
BVS000J

Machine vision sensor, NPN, FOV 17x12 mm @ 50 mm, FOV 320x210 mm @ 1000 mm, 640x480 pix resolution

CadenasPath BVS -Balluf Vision Sensor
CatalogProduct yes
Switching output
Supply voltage min-21.6 V
Supply voltage max-26.4 V
Parameterization via PC
Inputs
1× Trigger, 1 x Select
58 mmX52 mmX40 mm
Ambient temperature max=+55 °C
Ambient temperature min=-10 °C

Turning

Program: Pick

Systems Check

SRH500P rotary sensor operates from either a 5Vdc regulated or 9-30Vdc unregulated supply and can be factory programmed to have a measurement range from 20° up to 360° in 1° increments. The sensor can be supplied with single output (SRH501P) or dual output (SRH502P). Both outputs are individually configurable at the factory for analogue or digital output and clockwise or anti-clockwise output.
The SRH500P incorporates a 12bit non-contact Hall effect sensor with microprocessor control - offering 0.025% resolution over the selected measuring range.
Key Features
· Contactless - Hall effect technology
· Single or dual redundant output
· Analog or Digital (PWM) output
· Measurement range 20° to 360°
· 12 bit resolution
· CW or ACW output
· Less than 1mVrms output noise
· Rugged housing design, in marine grade aluminium
· Superior shaft strength
· Sealing option to IP69K
· M12 connector option for easy installation
· World leading availability