Testing system for motor driven apparatus

Claim 2

A testing system for electric motor driven apparatus having motor means, a power source for supplying an input voltage to said motor means, means for sensing motor current, a controller and current control means responsive to sensed motor current for controlling saiD motor means, comprising: a. a test power supply for generating a voltage having a predetermined relationship to said input voltage; b. means for replacing said power source with said test power supply; c. simulated motor means; d. means for replacing said electric motor means with said simulated motor means such that said simulated motor means is coupled to said test power source through said current control means; and e. means for scaling sensed simulated motor current for providing said controller with a sensed current equivalent to normal operation.

Claim 3

A system according to claim 1 wherein: a. said simulated motor means includes a first section and a second section; b. said first section being for simulation of a first motor means of said apparatus; c. said second section being for simulation of a second motor means of said apparatus.

Claim 4

A system according to claim 2 wherein: a. said first section includes means for simulating a plurality of motors; and b. said second section includes means for simulating a plurality of motors.

Claim 5

A system according to claim 2 which includes a. circuit means common to both said first and second sections for simulating resistive forces acting on said electric motor driven apparatus.

Claim 6

A system according to claim 1 which includes a. input means connectable with said controller for commanding modes of operation of said apparatus.

Claim 7

A system according to claim 1 wherein said controller includes a plurality of relays, the system additionally including: a. a second voltage supply connectable with said controller for supplying operating voltage to said relays.

Claim 8

A system according to claim 1 which includes a. a readout means operably connected to said simulated motor means for providing an indication of motor parameters when said testing system is connected to said motor driven apparatus.

Claim 9

A system according to claim 1 which includes a. a mobile carrier; b. said testing system being mounted on said carrier whereby said testing system may be movably positioned relative to said apparatus.

Claim 10

A system according to claim 1 which includes a. computer means operable to initiate various modes of operation of said apparatus; b. said computer means being operably connected with said simulated motor means for receiving and analyzing simulated motor means parameters.

Claim 11

A system according to claim 1 wherein: a. the ratio of the output voltage of said power source to the output voltage of said test power supply is at least 50:1.

Claim 12

Apparatus for simulating multiple electric motors which are coupled to drive a common load, comprising in combination; a. at least first and second circuits, each including at least an inductor, a resistor and a variable voltage source coupled in series; b. at least second and third circuits respectively responsive to the electric current flowing in said first and second circuits and for generating in response thereto first and second signals respectively indicative of the magnetic field produced by first and second electric motors; c. at least a fourth circuit for generating a third signal indicative of the angular velocity of said first and second electric motors; and d. at least fifth and sixth circuits selectively coupled to said second, third and fourth circuits for generating first and second control signals which respectively determine the amplitude of the voltage generated by said variable voltage sources.

Claim 13

Apparatus for simulating multiple electric motors which are coupled to drive a common load, comprising in combination; a. at least first and second circuits, each including at least an inductor, a resistor and a variable voltage source coupled in series; b. at least second and third circuits respectively responsive to the electric current flowing in said first and second circuits and for generating in response thereto first and second signals respectively indicative of the magnetic field produced by first and second electric motors; c. at least a fourth circuit for generating a third signal indicative of the angular velocity of said first and second electric motors; and d. at least fifth and sixth circuits selectively coupled to said second, third and fourth circuits for generating first and second control signals which respectively determine the amplitude of the voltage generated by said variable voltage sources.

Claim 14

Apparatus in accordance with claim 11 further including means for generating signals indicative of the velocity related losses in said first and second electric motors.

Claim 15

Apparatus in accordance with claim 12 further including means for simulating the load coupled to said first and second motors.