ActivMedia Robotics

Table 15. Configuration parameters (currently P2OS 1_J) with values for Pioneer 2-DX

KEYWORD

Type

Default

Description

 

CONSTANTS

 

 

Should not be changed using p2oscf

Type

str

Pioneer

Identifies the robot type.

 

Subtype

str

P2DX

Identifies the ActivMedia robot model.

Serial

str

factory

Serial number for the robot.

 

FourMotors

byte

0

Is '1' for the four-motor Pioneer 2-AT

RotVelTop

int

360

Maximum rotational velocity; deg/sec

TransVelTop

int

2200

Maximum translation speed; mm/sec

RotAccTop

int

600

Maximum rotation (de)acceleration; deg/sec2

TransAccTop

int

4000

Maximum translational (de)acceleration; mm/sec2

PwmMax

int

500

Maximum motor PWM period (500=fully on).

Encoder

int

76

Encoder ticks/mm: (ticks/rev x gear-ratio)

 

 

 

(wheel_diameter x PI)

 

 

 

 

VARIABLES

 

 

Parameters that you may change with p2oscf

Name

str

not_set

Unique name for your robot.

 

 

 

 

Maximum of 20 characters, no spaces.

SInfoCycle

byte

0

Server information packet communication cycle

 

 

 

time: 0=classic 100 ms; 1=new 50 ms cycle time

HostBaud

byte

0

Baud rate for host (client) serial port

 

 

 

connection: 0=9600, 1=19200, 2=38400 bps.

AuxBaud

byte

2

Baud rate for AUX serial port; see HostBaud

HasGripper

int

0

1 if P2 Gripper installed into User I/O; 2 if

 

 

 

installed in General I/O; otherwise 0

FrontSonar

int

1

1 if front sonar array installed; otherwise 0

RearSonar

byte

0

1 if rear sonar array installed; otherwise 0

LowBattery

int

110

In 1/10 volts; microcontroller alarm activated

 

 

 

when battery charge falls below this value.

RevCount

int

20000

The number of differential encoder ticks for a

 

 

 

360 degree revolution of the robot.

WatchDog

int

2000

Ms time before robot automatically stops if it

 

 

 

has not received a command from a client.

 

 

 

Restarts on restoration of connection.

P2Mpacs

byte

0

1 enables alternative SIP. Otherwise 0.

StallVal

int

200

Maximum PWM before stall. If > PwmMax, never.

StallCount

int

100

Ms time after a stall for recovery. Motors not

 

 

 

engaged during this time.

 

Compass

Int

0

Compass type: 0=none; 1=V2XG; 2=TCM2

CompX

int

0

V2XG Compass calibration X-offset

CompY

int

0

V2XG Compass calibration Y-offset

RotVelMax

int

200

Max rotational speed; deg/sec.

TransVelMax

int

300

Max translational speed; mm/sec.

RotAcc

int

50

Rotational acceleration; deg/sec2

RotDecel

int

50

Rotational deceleration; deg/sec2

RotKp

int

30

Proportional PID for rotation

 

RotKv

int

200

Differential PID for rotation

 

RotKi

int

0

Integral PID for rotation

 

TransAcc

int

300

Translational acceleration; mm/sec2

TransDecel

int

300

Translational deceleration; mm/sec2

TransKp

int

15

Proportional PID for translation

TransKv

int

800

Differential PID for translation

TransKi

int

4

Integral PID for translation

 

JoyVelMax

int

600

Joydrive maximum translation

velocity

JoyRVelMax

int

125

Joydrive maximum rotational

velocity

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Pioneer 2 / PeopleBot manual Keyword

2 / PeopleBot specifications

Pioneer 2, also known as PeopleBot, is an advanced mobile robot platform heralded for its versatile design and robust capabilities. Developed by the renowned robotics company Adept Technology, Pioneer 2 has become a staple in the field of mobile robotics, widely utilized for research, education, and practical applications in various industries.

One of the standout features of Pioneer 2 is its exceptional mobility. The robot is equipped with differential steering, allowing it to navigate complex environments with precision. Its compact and sturdy chassis enables it to traverse a variety of terrains, making it suitable for indoor and outdoor exploration. This mobility is further enhanced by an adaptable wheel configuration, allowing for smooth movement even over obstacles.

In terms of technologies, Pioneer 2 is outfitted with an array of sensors that facilitate autonomous navigation and obstacle avoidance. These sensors include laser range finders, infrared sensors, and bumpers, which work in tandem to map the surrounding environment and detect potential hazards. This capability is critical for applications in areas such as warehouse automation or reconnaissance tasks, where safe navigation is paramount.

Pioneer 2 also supports extensive software frameworks, notably the Robot Operating System (ROS). This compatibility allows researchers and developers to leverage a vast library of tools and algorithms, expediting the process of programming and deploying robotic applications. Additionally, the platform can be integrated with various payloads, such as cameras or grippers, expanding its functionality further.

Another significant characteristic of Pioneer 2 is its user-friendly design. The robot comes with an easy-to-use programming interface that empowers users with varying levels of expertise to engage with the technology. Educational institutions often employ Pioneer 2 in robotics courses to provide students with hands-on experience in programming and operating robotic systems.

Powering Pioneer 2 is a rechargeable battery system that ensures extended operation times. This feature is particularly advantageous for fieldwork applications where connectivity to a power source may not be readily available. Importantly, the robot’s modular design facilitates maintenance and upgrades, allowing users to keep their systems current with advances in technology.

Overall, Pioneer 2 (PeopleBot) exemplifies innovation in mobile robotics with its outstanding mobility, advanced sensing technologies, compatibility with leading software frameworks, and a design focused on ease of use and adaptability. It continues to be a preferred choice for researchers, educators, and professionals in the rapidly evolving landscape of robotics.