[PSUBS-MAILIST] PWM controllers

[hank pronk via Personal_Submersibles]

 Alan,That 1\4 hp was just an example.  I am building my own pressure proof electric liner actuators to build two arms on Gamma.  I have a motor type in mind and will start testing it for power and speed this weekend.  That is why I want to know if the PWM  will effect the power output.  Hank    On Wednesday, October 4, 2017, 4:48:12 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Hank,are you working out the gearing for your electric manipulator?I worked out that that 1/4 horsepower motor could lift 18kg, 1 metre in1 second. Not bad for a tiny little motor! They are selling 200Wbrushless motors for $14 on Hobby King.Alan

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On 5/10/2017, at 9:24 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:


 Alan,If I have a 1\4 hp motor and I have the controller turning the motor at say 50 rpm, is the motor giving me 1\4 hp at 50 rpm?Hank
    On Wednesday, October 4, 2017, 1:33:59 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Hi Hank,yes. If you have your speed controller on full speed there would be nopulsing of the power to the motor, it would be fully on.You can have full power & no rpm in a stall situation. Most moderncontrollers I have seen have current limiting that you can program in;so in a stall or overloaded situation it would back off the power.Alan

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On 5/10/2017, at 7:56 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:


Hi All,When a dc motor is speed  controlled with a PWM controller is the motor at full power regardless of rpm?Hank

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